fixing pressure cooker safety valve free sample
Pressure cookers have become commonplace in modern households, and their improved safety features have made them twice as popular. In the past, pressure cookers earned a dark reputation for explosions, but today, most pressure cookers have a minimum of 10 or more safety features.
That said, when the pressure cooker safety pressure valve starts leaking, you should know the cause because pressure cookers must release steam to stay safe.
You find many pressure cooker safety valves on top of the lid near the handle, but this depends on the type. If you see a leak from here while pressure cooking, that doesn’t always mean danger.
The safety valve releases the steam to lower the pressure to safer levels and regulate the pressure. The newer models, like the electric pressure cooker, even release the steam using a computer chip. A pressure cooker model like this will release light vapors or condensation from the safety valve, which doesn’t pose a danger.
Important to note: The safety valve leaking doesn’t pose a danger as long as the pressure cooker continues to build to the desired PSI. Once you reach your desired PSI, the safety valve should stop leaking altogether. If it continues to leak, that indicates pressure control failure.
Pressure cookers will open the safety valves enough to release the pressure cooker steam building in the pot. This causes a hissing sound or rattling sound. Don’t feel intimidated that is normal. If you wanted a quieter pressure cooker, electric pressure cookers don’t make as much noise.
You must maintain consistent pressure to ensure that the pressure cooker will cook the food all the way through. Safety valves can be bought and replaced if you have a broken one. However, buy a quality safety valve from any of the reputable brands to ensure the quality.
Manufacturers made safety valves to protect consumers from exploding pressure cookers. If you have a defective safety valve that doesn’t leak, you could use it. You could use it, but you wouldn’t be wise to do it. Don’t do this.
Safety valves let out the dangerous excessive steam. When they leak, they let out steam unnecessarily, and the pressure cooker won’t cook the food. On the other hand, when defective and closed, you have a higher risk of it exploding. Never use a pressure cooker that has either a leaking valve or a defective valve.
You don’t want to see steam exiting the safety valve because the leaking from high pressure can put you in a dangerous situation. The escaping steam can cause second and third-degree burns if exposed to the skin. If you notice a leak, immediately turn off your pressure cooker from the heat source and release the steam. Even smaller leaks pose a danger.
Steam exits from the safety valve of your pressure cooker because of a broken disc, or rubber gasket, on the inside. Because of this, it releases too much steam and the vessel never boils. If you have damage to the valve, you will see a hole in the valve.
Warning: Working on the safety valve yourself does pose a small level of danger. Do this at your own risk. If you don’t want the risk, then take it to an authorized service center. A utensil repair professional can also repair this, but it depends on how much damage was done to the pressure cooker.
Buying a low-quality pressure cooker could be the cause of why these products don’t last long. They have a proneness to issues. You should also clean and maintain your pressure cooker after each use because it can begin to leak if not cleaned properly.
As we said, you can use two methods to replace the safety valve if you have a leak: You can replace it from the inside of the lid, or you can replace it from the outside of the lid. Before attempting either consult your user manual.
To replace the safety valve from the outside, you will use a screwdriver on the outside to turn the screw, while you hold the screw and keep it from twisting on the inside. Once it releases, use a cotton swab to clean the inside of the hole.
Check for surface damage as well to make sure that you don’t have structural problems. Examine the o-ring as well to make sure that it doesn’t have defects. Replace the safety valve with the new one and tighten it up.
From the inside, you will use a wrench to unscrew the safety, while the screwdriver will hold the screw in place. Once you have released it, do the same thing as you did with the first method. Replace the safety valve and tighten it back up.
While you can replace them via the DIY method, don’t try to fix a broken safety valve. The replacement parts only cost between $2 to $17 to replace a safety valve. Buy from a genuine brand because it guarantees that you fix the problem.
Considering the cheap cost, you may want to buy a spare because you can replace it at a moment’s notice. When the pressure reaches a dangerous level, the safety valve acts as the canary in the coal mine. This blows out before it explodes. The safety valve attempts to bring the pressure back down to a normal level.
Never use a damaged valve because it doesn’t provide the same level of protection. You may experience similar problems as before like the valve leaking, or the valve shutting down altogether. Both scenarios put you in a dangerous situation.
The safety valve leaking poses a danger at the first sign of damage. With that in mind, a leak only gives you one example of what can happen to them. You should replace the safety valve whenever it becomes cracked or brittle. As soon as you see the damage, replace it.
Inspect the safety valve for signs of wear before each use. Another reason that manufacturers say to only fill the pressure cooker two-thirds full is that it ensures that the food doesn’t block the safety valve. The pressure cooker will build a dangerous level of pressure if that happens.
Let’s say that the food blocked the pressure release valve. The safety valve may melt to release the steam. That becomes the last stop before the pressure cooker explodes. The valve helps to maintain the pressure levels. While you have other safety features, this component especially protects you.
Thorough cleaning after using your pressure cooker will go a long way to helping it stay in tip-top condition. Handwash the pressure cooker lid with soap and warm water. Never put a pressure cooker in the dishwasher because this can be hard on the more sensitive components like the gaskets and rubber ring or seal.
A leaking safety valve doesn’t always mean danger, but look for the cause if it continues after you reach the desired PSI. Some steam leaking is normal, but you shouldn’t see an excessive amount of it leaking. That indicates that your pressure cooker has too much pressure.
Never try to repair a damaged safety valve. You can simply replace them, but if you don’t feel comfortable doing it yourself, hire a professional. Always pay attention to leaks because they can stop your pressure cooker from building pressure.
Following this advice is a problem because the steam release vent is one of the pressure cooker’s main safety systems and any obstruction could cause this system to fail, or to trigger one of the other last-resort safety systems (which are generally pretty messy and could permanently damage electric pressure cookers).
In fact, most pressure cooker instruction manuals instruct the cook not to cover the lid or obstruct the vent or steam release valves of their pressure cooker.
When cooking in a small space, the large release of steam after pressure cooking can certainly be inconvenient. Here are three ways to reduce the impact of steam in your kitchen:
Open the pressure cooker using Natural Release, instead. This releases just a little wisp of steam during a 20-30 minute period as the cooker cools itself down.
Place the cooker under the range hood, using a cutting board to stabilize, and operate and release pressure there. Before it’s time to release pressure, simply turn the exhaust fan in the range hood to maximum power. Remember to remove this set-up away from the range when the oven or other burners are in operation.
If the range hood is not accessible, operate or carefully move the pressure cooker next to an open window or ventilated area before releasing pressure. If moving the pressure cooker, ensure the pressure valve is pointing away from you and that the floor is free of trip hazards (children, pets, rugs). If the pressure cooker is electric, disconnect or hold the power cord so you don’t trip over it.If your cooker’s instruction manual advises you not to move the cooker while it has contents under pressure, don’t do it.
foamy food with wrong pressure release – Foods that are known to foam and bubble, such as beans, rice, most grains and fruits should only have the pressure cooker opened using Natural Pressure Release. This keeps the foam from bubbling up and shooting out through the pressure valve.
pressure cooker too full– Cooks unfamiliar with pressure cooking may fill a pressure cooker all the way up to the top. The “max” line in the liner of electric multi-cookers is actually to be used for slow cooker and other non-pressure programs. The rules are different when cooking food under pressure. The cooker should never be filled more than half-way for foamy foods (rice, grains and beans), nor more than two-thirds for everything else.
If you must get the cooker open right away, and there is stuff spraying out of the valve, open the pressure valve in small bursts 5 to 10 seconds apart – this will give the foam time to subside between bursts. Then, clean the pressure cooker lid, gasket, and every part of valve very well so there is no food residue interfering with the valve at the next use.
Pressure cookers are quite common in kitchens these days because they save time and effort while in cooking. They used to be dangerous, but not anymore, thanks to improved technology, advanced mechanisms, and safety features that have given an entirely new dimension to cooking.
However, like every other tool, a pressure cooker can encounter issues that can impact the cooking time and the quality of food, causing you unnecessary frustration. What would you likely do? Check the instruction manual and search for troubleshooting steps.At times, user manuals may not be able to resolve the problem, because of the following reasons:
This is the main reason why this particular post includes every problem a pressure cooker can develop. Starting with the basic steps on how a pressure cooker should be used, we’ll take you through the common functioning issues, followed by some critical ones. This post will provide the insight on technical and functional aspects of modern-day pressure cookers. So, let’s get started right now!
Below are the steps showing how you should operate your pressure cooker under normal circumstances.Pour the liquid into the pressure cooker up to the minimum level indicated in the manual. Add the desired food item and lock the lid if required.
Choose the pressure according to the food (normally indicated in the manual). Modern-day pressure cookers, especially electric cookers have pre-determined programs and time. So, you can use this feature as well.
After 10 to 15 minutes of pressure cooking, the following processes will have taken place:The air and steam will escape out of the valve indicating that the cooking contents are boiling.
You have to turn on the digital timer to cook the food at the desired pressure. In automatic electric pressure cookers, there is a count-down feature that automatically maintains the pressure for a certain time.
At the end of the cooking, the pressure release takes place. It depends on upon the recipe what kind of pressure release method suits it. The pressure releases as the steam comes out through the pressure release valve.
Steam leakage is the most common problem in pressure cookers that causes problems in pressure buildup. It takes longer for the pressure to reach the desired limit, and when it does, it cannot remain constant for the specified period.
Wash the gasket in cold water and fix it back in the correct manner. Follow the directions while fixing the gasket back to its position.Damaged Gasket or Old Valve
Sometimes the gasket gets damaged. With the passage of time, the pressure valve loses its efficiency and effectiveness. As a result, you don’t get the right pressure buildup for cooking.Always check the gasket and pressure valve for damages, and replace them as soon as possible.
There are several different issues why your pressure cooker may not properly cook the food within the estimated time, such as:You’ve filled too much food or water
If you’re a new user, you might easily be scared seeing water coming out of the valve, but it’s not a big thing. However, this is another common issue that can cause operational issues for a pressure cooker.
This particular problem mainly occurs in pressure cookers that have pressure regulating weights. You can see the water dripping out and vapors accumulating around the rim during the pressure buildup. As soon as the pressure is achieved, the vapors go away.
Anyhow, if you have a different model and still having the same issue, it may be because of food particles accumulated inside the vent pipe. To avoid this issue, clean the valves and the vent pipe regularly.Difficulty in Opening the Lid
Another common problem with pressure cookers is, the cooker lid gets tight and remains jammed even after the heat is turned off. It is often caused by the internal pressure of the pressure cooker. The pressure release may be insufficient and ends up jamming the lid.
If the lid remains jammed, remove the pressure valve and allow the pressure cooker to heat on high. That will release the pressure, and the lid will loosen its grip.
There are many reasons for pressure cookers not achieving the desired pressure level. Each of them, with their solutions, is mentioned below:The Lid: The lid of the cooker must be positioned accurately. In that case, remove and refix it in the right manner. If the problem persists, replace the lid according to the instruction manual.
The Locking Mechanism: Pressure cooker may not be attaining the right pressure because of the locking mechanism. Or, it may not have been locked properly. This problem occurs in pressure cookers that do not have a self-locking feature. Check the locking mechanism of your pressure cooker, thoroughly before putting the food in it.
The Rim: Leakage may also occur due to a damaged rim. They get damaged when you rap your spoon against the rim. If you have a stainless steel pressure cooker, use steel wool to remove scratches and stains on the rim.
The Valve: Another reason why the specified pressure level is unattainable is due to the improper placement of the pressure valve. Improper cleaning of the valve causes this. So, always clean and fix the valve of the pressure cooker before cooking.
Old Gasket and Valve: As discussed above, the gasket and pressure valve must be checked regularly before using the cooker. Normally, you should replace the gasket and other pressure cooker components made of silicone or rubber every 18 months.
The Liquid: Pressure cookers have limited capacity for food, and they always need space to build pressure. A pressure buildup will take up to 30 minutes to reach the desired pressure if there is too much liquid inside the cooking pot. Follow the instructions while adding the liquid to keep it at the minimum level.
The Food: Normally, the instruction manual has information about how much ingredients you can put inside your pressure cooker for a certain recipe. Too much ingredients can cause a delay in pressure buildup, or the pressure may not be achieved at all. In general, if you’re filling grains, fruits, and legumes, keep your pressure cooker half-full. For all other recipes, maintain 2/3 of the filled space.
Cold Items: Either allow the frozen food to defrost before pressure cooking or plan for longer times. Frozen ingredients can easily increase the pressure cooking time up to 30 minutes.Desired Pressure Cannot be Maintained
Any of the following issues may cause difficulty maintaining the pressure you want:Old or Damaged Gasket: The gasket of the pressure cooker needs to be replaced every 18 months. If your pressure cooker consists of other rubber or silicone parts, replace them periodically.
Problem with the Valve: Pressure valve needs to be secured properly to create pressure buildup and maintain the desired pressure for a certain period of time. Pressure cannot reach the desired level with an old or worn out pressure valve. So, always clean the pressure valve and replace it every 18 months.
External Temperature:This is the main issue with stove top pressure cookers in which you either reduce the heat too much or too soon. Read the instruction manual thoroughly to know the exact time to turn down the heat. If you think you’ve turned the flame lower than the required limit, turn it back to high and allow the pressure to build. Then reduce the heat slowly to the desired level.Pressure Valve Sprays Foam or Food
It can happen because of the following reasons.The opening method: The main reason why a pressure valve sprays foam, you’ve used the wrong opening method. If it sprays foam, there is likely legumes, fruits, and grains in the pressure cooker. For these ingredients, the only way to open the pressure cooker is through natural release method. For other recipes, follow the instruction manual.
Thickeners: If you have included thick liquid or flour in your recipe, the pressure valve may spray the food out. It happens because of the food binding with the steam, and when the pressure is released, some food particles might also come out.
Filling More than Limit: If the pressure cooker is filled more than its capacity, food particles will mix with the steam and spray out when the pressure is released. So, keep the pressure cooker 1/3 empty for all kinds of foods except for fruits, legumes, and grains as they should half-fill the cooker.Pressure Cooker Releases Steam More than it Normally Does
Steam is released before pressure cooking and after it… there are few reasons why your pressure cooker releases too much steam in either stage.Valve adjustment: If you notice that the valve is releasing too much steam, adjust the valve.
Too Much Heat: Excessive heat applied to the pressure cooker may cause too much steam release. In that case, let some pressure out then reduce the heat.Food is not Cooked Properly
Your food may be undercooked or overcooked because of the timing, regardless of the model you use. Follow the instruction manual and note the amount of time required for different recipes to cook properly. There may be other reasons as well.Heat During Pressure Cooking: In stovetop pressure cookers, if you set the heat too high, the food can be overcooked, dried, or burned. Too much heat builds up extra pressure and causes the food to burn or dry. So, if you experience it during cooking, lower the heat to the minimum level.
Burner Size: Another problem with stovetop pressure cookers is, if the burner is wider than the size of the pressure cooker, your food may overcook or burn. Always, use the burner according to the size of your pressure cooker.
Well, if you have installed a new gasket then you have to make sure it’s installed the right way. While installing it in the lid, make sure that the “Right Side” of the gasket points upward. If the problem persists, check the structure of your pressure cooker looking for signs of “warping”.
If you have a vintage aluminum pressure cooker, it may have this problem. Stainless steel pressure cookers don’t often face this issue, and they don’t damage as often when compared to their aluminum counterparts.It may have a warped lid: you may not detect the warping at first sight, but even the slightest warping can cause the steam to leak. It may have been due to overheating or aging of the material. Or, the pressure cooker may have been dropped in past.
The base unit has a damaged rim: This is caused by dents, dings, scratches and abrasive cleaners. If the rim gets damaged, it may not allow adequate sealing. In this situation, you have to either replace these parts or buy a new pressure cooker.Gasket Stuck to the Lid
The metal sealing and the pressure cooker lid should not be scratched or damaged while removing the gasket. So, avoid using scrapers, sandpaper, or abrasives on these metal surfaces.Aluminum Pressure Cooker Having Stains
If you have an aluminum pressure cooker, you have to be careful while cleaning it. Alkali solutions can harm and discolor aluminum. Baking soda is a mild alkali and ammonia solvents are medium strength alkalies that can cause stains on aluminum pressure cookers. You can remove light stains and small discoloration by cooking acid foods in an aluminum pressure cooker. For stubborn stains, you can apply the following method.
If you live in a location where tap water contains minerals, your aluminum pressure cooker may develop mineral stains. That happens, because the minerals from the water deposited inside the aluminum pan, react with the soap, detergents and the fats from the food and produce stains on the surface.
Heat tint is a dark and permanent discoloration on stainless steel with purple or blue color appearing prominently. It is caused by any of the following issues:Too much heat is applied to the pressure cooker
Although the heat tint is permanent, it may fade with the passage of time. Mild discoloration does not affect the usefulness of the pot, while severe tints can cause functional issues in your pressure cooker.
Pressure cookers are designed to make life easier and deliver hot meals quickly. However, they do require proper operation and some simple maintenance to remain a safe and productive member of your kitchen.
The first thing in pressure cooker safety is the addition of an appropriate amount of water to aid in the cooking process, create the steam that cooks your meal, and result in the pressure that gives the machine its name.
Several things can happen when apressure cookeris allowed to run out of water. The range of results varies from automatically shutting down to a volcanic eruption of hot food and flying projectiles in your kitchen. The latter is the worst-case scenario. And while it is not the norm, it does happen frequently enough and can result in some pretty serious injuries.
It is important to never run a pressure cooker without water. It cannot cook your food properly without water, and the pressure will build to such an extent that the lid, pressure valve, plugs, and hot food could be thrown all over the kitchen. This can seriously harm you, your kids, and your pets, not to mention property damage that comes from flying projectiles.
Mom’s old pressure cooker hissed and rattled enough to start its own band. The newer models have computer chips and features that regulate pressure to eliminate the unnerving sounds that old pressure cookers made.
A small amount of hissing is a normal sound that some models of modern pressure cookers can make from time to time. Electric cookers make very little noise and can hiss a bit in the process of releasing pressure to keep the cooking process safe.
If the hissing is more pronounced, you may have an improper seal or a gasket that is bad. Turn down the heat to safely reduce the pressure, and discontinue using the pot until you determine where the problem lies.
While it is relatively infrequent, pressure cooker explosions have happened often enough to make people wary of them. This was a more typical occurrence with older, stovetop models that your mother or grandmother may have used. Today’s pressure cookers come with numerous safety features, but that doesn’t mean they can always be trusted.
Running out of water in the pressure cooker can result in a number of things happening. If the cooker has a safety mechanism that is in proper working order, it may simply turn itself off. You may get a burn message on the display screen, or you might just wind up with a big batch of burnt beans.
Newer electric models with safety features are designed specifically to prevent kitchen catastrophes and injuries, however, defects in the design or manufacturing process can create dangerous consequences that result in a trip to the hospital.
To avoid this scenario, it’s important to follow the manufacturer instructions, never leave the pot unattended, and keep enough water in the unit to minimizepressure cooker accidents.
The simple answer is yes. Pressure cookers can explode. When too much pressure is built up or isn’t releasing at a safe rate, the lid can blow off. It isn’t an explosion in the scientific sense, but it certainly sounds and looks like one. When this amount of pressure and steam escape a confined space all at once, the consequences can be serious.
When used properly, pressure cookers can save you time and money while creating delicious, hot meals for your family. Here are some safety tips and tricks for cooking meals safely with your pressure cooker:Check the equipment– The rubber gasket is critical. Make sure it is intact, free from rips and tears, and isn’t crusted with food. The proper sealing of the pressure cooker depends on a good gasket.
Fill only part way– Food like beans and rice tend to expand during cooking, and can clog the pressure release mechanisms or create too much pressure because there isn’t enough room for the steam. Don’t overload the cooker with too much food or water.
Keep children and critters away– Pets and kids should be banned from the area when using a pressure cooker. Teach kids never to touch the cooker, and let them know it is extremely hot even after it is done cooking. Though accidents are rare, they do happen. It’s best to protect kids and pets from harm by keeping them at a distance from your cooker.
Don’t open the pot before pressure is released– Lifting the lid before the pressure has been released can cause serious burns. It’s tempting to speed the process along on a busy evening, but don’t risk it. It’s not worth a visit to the hospital.
Don’t buy used or bargain cookers–Pressure cookers are recalledfor manufacturing problems regularly and you may be buying someone else’s problem. Used pressure cookers may also be damaged or worn out which creates hazards. Don’t risk your safety to save a few dollars. Buy new.
If you have experienced injuries from a pressure cooker explosion or a defective pressure cooker, it’s important for you to know that you may have a right to pursue compensation for your injuries.
Pressure cooker recalls and defects do happen. If you need advice about pursuing a product liability case for your injuries and property damage,contact Zanes Lawtoday for a free case evaluation. We can help you understand your legal options with no cost to you.
If you’ve never had a pressure cooker in your home before, you may not know what kind of sounds or statuses to expect from your new tool. Hissing, for example, can seem unexpected and even indicative of pressure cooker failure when you first hear it.
In reality, your pressure cooker is supposed to hiss. The noise indicates the successful release of steam from the cooking unit either at the end of its cook time or when pressure gets too high. Let’s break down the basics of your pressure cooker’s quirks so that you can confidently put your unit to use.
Pressure cookers work by using a combination of steam and the aforementioned pressure to raise your food to a certain temperature. The high heat of your average pressure cooker allows your food to cook faster than it might otherwise. Similarly, the seal created by the pressure cooker helps keep the flavor in your food.
To work, then, your pressure cooker needs to safely generate, trap, and eventually release the steam and pressure that cooks your food. Ideally, manufacturers will test their products and ensure that each is not only efficient but also safe to use. However, because pressure cookers generate so much pressure and heat, they can often imbalance and explode or malfunction.
If you’re not careful when using a pressure cooker, you could suffer from steam burns, contact burns, or extensive spills. Pressure cooker explosions resulting from a poorly-made product can do significant damage to both your health and your home.
Pressure cookers trap their liquid courtesy of an internal seal. This seal needs to bind the lid of a pressure cooker as tightly as possible to prevent steam and pressure from escaping. If you have a pressure cooker that does not seal efficiently, the meals you cook won’t turn out like they’re supposed to.
Pressure cookers use an impressive amount of heat to cook your food in a short period of time. As a result, the whole of your unit may become warm. It’s in your best interest to avoid interacting with the lid of your pressure cooker while your meal is cooking, as you could risk burning yourself.
With that in mind, only touch the steam release or protected handle of a pressure cooker once your food is done cooking. Even then, make sure you keep exposed skin away from the steam that escapes from the pressure cooker.
So long as the rest of your pressure cooker’s parts are working as they should, your pressure cooker should only hiss when it’s venting pressure. There are times when the pressure inside your cooker may get too high during the cooking process. In turn, the unit will vent that pressure, resulting in a low hissing sound.
If your pressure cooker is hissing, keep your hands and exposed skin away from the steam valve and vents. The steam that your cooker is releasing has the capacity to burn you if you’re not careful.
Both stovetop and electric pressure cookers hiss when they release pressure. This sound is not indicative of anything wrong with your unit. However, you’ll want to practice due diligence if you do hear your pressure cooker making a hissing sound. By taking measures to protect your skin from steam burns, you can limit your personal injuries and enjoy a good meal.
The food inside of your pressure cooker can start to bubble or foam for several different reasons. Adding too much salt to your food, for example, can increase its starch content and make the cooking process more dynamic. Similarly, overfilling a pressure cooker can see your ingredients struggle to find the space they need to cook.
While all foaming and bubbling is cause for concern, there are only some occasions on which it indicates something at fault with your unit. If your pressure cooker’s value or opening procedures aren’t properly configured, bubbles, steam, and foam may all escape from your unit.
Your pressure cooker cooks its food by compressing heat and liquid in a confined space. If your pressure cooker isn’t able to retain that force, your food isn’t going to cook in the way that you’d like it to.
Most of the time, you can blame your pressure cooker’s lack of pressure on a failed seal. If you’re struggling to cook some of your favorite dishes, inspect that seal and determine whether or not your pressure cooker shuts effectively.
If you’ve never used your pressure cooker before, its manufacturer may allow you to return a unit with a broken seal. Anyone who’s tried to use their pressure cooker, however, may have to invest in a replacement part. Our team can go over your product warranty with you to determine what repairs your purchase may entitle you to.
A defective pressure cooker poses a threat to more than your evening meals. Pressure cookers that have been falsely advertised or improperly put together put your health at risk. Fortunately, you can contact a product liability attorney about a faulty pressure cooker within hours of a pressure cooker accident.
Zanes Law’s product liability lawyers know that pressure cooker accidents can result in both injuries and significant property damage. In turn, we bring together your product liability case while you focus on recovering. We’ll stand with you whether you choose to pursue settlement negotiations or compensation via trial. Contact us today to learn more about our services.
Pressure canners for use in the home were extensively redesigned beginning in the 1970"s. Models made before the 1970"s were heavy-walled kettles with clamp-on or turn-on lids. They were fitted with a dial gauge, a vent pipe in the form of a petcock or covered with a counterweight, and a safety fuse. Most modern pressure canners are lightweight, thin-walled kettles; most have turn-on lids fitted with gaskets. At least one style is still made with heavy cast aluminum, has screw-down knobs around the canner and does not have a gasket, however.
Modern pressure canners have removable racks, an automatic vent/cover lock, a vent pipe (steam vent), and a safety fuse. Use only canners that have the Underwriter’s Laboratory (UL) approval to ensure their safety.
Today’s pressure canner may have a dial gauge for indicating the pressure or a weighted gauge, for indicating and regulating the pressure. Weighted gauges are usually designed to "jiggle" several times a minute or to keep rocking gently when they are maintaining the correct pressure. Read your manufacturer’s directions to know how a particular weighted gauge should rock or jiggle to indicate that the proper pressure is reached and then maintained during processing. Dial gauge canners will usually have a counterweight or pressure regulator for sealing off the open vent pipe to pressurize the canner. This weight should not be confused with a weighted gauge and will not jiggle or rock as described for a weighted gauge canner. Pressure readings on a dial gauge canner are only registered on the dial and only the dial should be used as an indication of the pressure in the canner. One manufacturer now makes a dual-gauge canner; read the manufacturer’s user manual for information on when and how to use either the weighted gauge or the dial.
Pressure canners come deep enough for one layer of quart or smaller size jars, or deep enough for two layers of pint or smaller size jars. The USDA recommends that a canner be large enough to hold at least 4 quart jars to be considered a pressure canner for the USDA published processes.
The altitude at which the canner is operated is above sea level and adjustments in pressure are not made. Internal canner pressures (and therefore temperatures) are lower at higher altitudes. Canners must be operated at increased pressures as the altitude increases. Check reliable canning instructions for altitude adjustments.
Air is trapped in the closed canner during the process. Air trapped in a pressure canner lowers the temperature obtained for a given pressure (for example, 10 or 15 pounds pressure) and results in underprocessing. To be safe, USDA recommends that all pressure canners must be vented 10 minutes before they are pressurized.
An inaccurate dial gauge is used. Dial gauges should be checked for accuracy each year before use. If the gauge reads high or low by more than two pounds at 5, 10 or 15 pounds pressure, replace it. If it is less than two pounds off in accuracy, you can make adjustments needed to be sure you have the required pressure in your canner.
Make sure the pressure canner is working properly before preparing food. Clean lid gaskets and other parts according to the manufacturer’s directions; make sure all vent pipes are clear and contain no trapped material or mineral deposits. Center the canner over the burner. The burner and range must be level. Your pressure canner can be damaged if the burner puts out too much heat. In general, do not use on an outdoor LP gas burner or gas range burner over 12,000 BTU’s. Check your manufacturer’s directions for more information about appropriate burners.
Start timing the process when the pressure reading on the dial gauge indicates that the recommended pressure has been reached, or, for canners without dial gauges, when the weighted gauge begins to jiggle or rock as the manufacturer describes.
Regulate the heat under the canner to maintain a steady pressure at, or slightly above, the correct gauge pressure. One type of weighted gauge should jiggle a certain number of times per minute, while another type should rock slowly throughout the process – check the manufacturer’s directions.
IMPORTANT: If at any time pressure goes below the recommended amount, bring the canner back to pressure and begin the timing of the process over, from the beginning (using the total original process time). This is important for the safety of the food.
Even after a dial gauge canner has cooled until the dial reads zero pounds pressure, be cautious in removing the weight from the vent pipe. Tilt the weight slightly to make sure no steam escapes before pulling it all the way off. Newer canners will also have a cover lock in the lid or handle that must release after cooling before the lids are twisted off. Do not force the lid open if the cover locks are not released. Manufacturers will provide more detailed instructions for particular models.
Depressurization of older canner models without dial gauges should be timed. Standard size heavy-walled canners require about 30 minutes when loaded with pints and 45 minutes when loaded with quarts. Newer thin-walled canners cool more rapidly and are equipped with vent locks that are designed to open when the pressure is gone. These canners are depressurized when the piston in the vent lock drops to a normal position. Some of these locks are hidden in handles and cannot be seen; however, the lid will not turn open until the lock is released.
Dry the canner, lid and gasket. Take off removable petcocks and safety valves; wash and dry thoroughly. Follow maintenance and storage instructions that come from your canner manufacturer.
Many components go into the design of a pressure cooker, including safety mechanisms to minimize the likelihood of an accident. Defects can occur due to loose parts, faulty construction, or damage from rough handling during the manufacturing process. Some of the most common pressure cooker dangers include:
Pressure release valves that don"t work as expected. The release valve allows air to escape the appliance, reducing the pressure safely. If this mechanism is not functioning correctly, this can lead to a build-up of pressure that cannot be released.
Defective safety mechanisms. Typically, newer pressure cookers are equipped with multiple safety valves and pins to ensure that if one component fails at regulating the correct temperature, other fail-safes are in place to prevent any malfunctions. However, if these components are not operating correctly, this can cause the appliance to fail.
Faulty or broken seals. The pressure cooker must be air-tight to be able to build and maintain pressure. If there is a leak in the seals of the lid, or if the cover is not locked correctly, the appliance will not work as expected.
Injuries as a result of a pressure cooker explosion can be incredibly severe. As steam releases from the appliance, it is likely to be scalding hot, and coming into contact with that steam can cause severe injury. In addition, should a pressure cooker explode, the moisture and contents inside can easily cause third-degree burns resulting in permanent scarring to the hands, arms, and face.
As with any electronic kitchen appliance, it"s also possible to suffer electrocution from faulty wiring or defective insulation that causes moisture to get into the wiring components. While these injuries are typically less severe than a pressure cooking explosion, they can still cause damage.
If you or someone you know has been injured due to a defective pressure cooker, you may have the ability to file a lawsuit. Our firm is currently ready to review your case and assist anyone who has suffered from a pressure cooking incident.