do propane tanks have a safety valve for sale

The safety relief valve is one of the most important and vital valves on any LP Gas container. All propane tanks and cylinders are required by law to be fitted with pressure relief devices designed to relieve excess pressure. The function of a safety relief valve is to keep a propane tank from rupturing in the unlikely event of excessive pressure buildup. Propane tank relief valves are also known as pop off valves, pressure venting valves or relief valves.

Relief valves are held in the closed position by the force of a powerful spring. As long as the pressure inside the tank is less than that of the spring, the valve will remain closed. If tank pressure rises to that of the spring, the valve will open resulting in a hissing sound outside the tank. If the pressure in the tank rises significantly higher than that of the spring, the valve will fully open. When the valve fully opens, it initially makes a loud pop followed by a blast of released propane gas. Once the pressure is released and the tank pressure falls below that of the spring, the valve closes.

Most propane tanks in residential and commercial service have internal safety relief valves. The reason for an internal valve as opposed to an external pressure relief valve is it presents less of an obstruction when moving the tank. Internal relief valves are generally placed near the end of the propane tank on above ground containers.

Found primarily on older tanks, external relief valves operate in the same manner as an internal relief valve with the spring mechanism being outside the propane tank itself. Relief valves on multvalves are always fitted with external safety relief valves. Older tanks with an external relief valve installed on the container are generally replaced with internal pressure relief valves, provided they are connected to a dedicated tank opening specifically designed for the placement of the relief valve.

Because the safety relief valve performs such a vital role in the protection of the propane tank, it should be maintained and repaired by licensed propane professionals only. Do not ever look into a relief valve or stand over it.

A protective cover should be placed over the relief valve to ensure proper operation. If the valve has debris in the upper mechanism of the relief valve and it opens, the debris may cause the valve to remain open resulting in a potentially dangerous situation and/or excessive loss of propane. A simple protective relief valve cover can be made from a plastic bag fastened around the external portion of the valve with a rubber band.

If a you encounter a relief valve that seems to be "hissing" (opened to relieve pressure) do not tap it or mess with it. If the tank has been recently filled in hot weather and the face gauge reads over 80 or 85%, spray some water from a hose on the tank. This may cool it down and reduce the expansion of the liquid in the tank. Call your propane company immediately and inform them of the situation.

Pictured here is a relief valve that was apparently leaking. Instead of calling the propane company to replace the valve, the customer decided to fix the problem himself. Using a soldering iron, he soldered the leak until it stopped leaking. In the process of "repairing" the leak, the customer completely sealed the relief valve in a closed position placing himself and his family in a very dangerous situation.

In this type of situation, a relief valve that is sealed shut will not allow the tank to vent excess pressure if it is overfilled or the pressure inside the tank exceeds the working pressure of the container. In a case where the tank is unable to vent to the outside, the tank is subject to rupturing causing more harm and damage than money saved by trying to fix it yourself. Let the propane company or LPG professional handle any problems with thesafety relief valve.

The safety relief valve is one of the most important and vital valves on any LP Gas container. All propane tanks and cylinders are required by law to be fitted with pressure relief devices designed to relieve excess pressure. The function of a safety relief valve is to keep a propane tank from rupturing in the unlikely event of excessive pressure buildup. Propane tank relief valves are also known as pop off valves, pressure venting valves or relief valves.

One thing you should pay attention to is the propane tank’s safety relief valve. All propane tanks, including the cylinders you use for your BBQ grill, are required by law to have pressure relief devices to allow for the release of excess pressure in the tank.

A spring keeps the safety relief valve closed as long as the pressure inside the tank is at a safe level. If the pressure in the tank reaches the same amount of pressure of the spring, the safety relief valve is opened. If that happens, you’ll hear a hissing sound coming from the tank. In instances where the pressure in the tank is much higher than that of the spring, the valve will fully open. You’ll hear pop if that occurs.

Your propane tank needs to have room for the propane inside it to expand. That is why your propane tank is filled to 80% of its capacity. The 20% of the tank that is empty space allows the propane to safely expand.

That expansion is why propane tanks are white or beige. Light colors reflect heat to minimize expansion. Dark colors retain heat and can cause the propane inside your tank to expand to dangerous levels. So, even if your propane tank doesn’t go with the color of your siding, leave it alone.

Houses or buildings utilizing gas energy require a gas piping system to power heaters, ovens, and other heating appliances. One of the most important elements of a gas piping system is the propane service valve, which controls propane gas flow in and out of a building. While there may be many other valves within gas plumbing, this valve functions as an on/off switch and serves as the main point of control for cutting off or allowing for the flow of gas into a piping system.

Propane valves are simply used to turn gas on or off. Similar to that of a water faucet, propane valves consist of a handwheel that controls propane gas flow when turned. When the wheel is turned, a stem and seat mechanism located within the valve opens or closes to prevent or allow gas flow from the tank.

Using propane gas requires an LP gas regulator, which decreases the amount of pressure released into the gas line, keeping it at an acceptable and safe level while still meeting the needs of the application.

There are multiple different valves in any propane system, each of which has a particular job. At IPS Equipment, we provide some of the most common types of valves for propane systems, including:

A pressure or safety relief valve is a safety mechanism that every propane system needs. It allows excess pressure in the tank to be slowly and safely released. Without this valve, pressure can build up and cause the tank to crack or rupture.

The relief valve has a pressurized spring. If the pressure levels within the tank grow too high, the spring forces the valve open just enough to return the pressure levels to acceptable levels. Once the pressure decreases, the spring relaxes, and the valve automatically closes.

This valve is where gas delivery personnel add new gas to a propane tank. Propane delivery trucks have hoses that can be attached to the filler valve so propane can be pumped into the tank. This valve is also pressure-activated, and it opens automatically in response to the pressure in the hose.

Filler valves have gaskets that operators can push the hose end against to avoid propane leaks. They also only allow for unidirectional fluid movement, meaning that once the tank is full, there is no risk of propane escaping when the hose is withdrawn.

This shut-off valve prevents gas from entering the building and any attached appliances. You can use this central point of control like an on/off switch to completely halt the path of gas in the system.

This valve is also called a vapor return valve or vapor eliminator valve. It ensures that propane is delivered at the proper pressure levels from the propane delivery truck to a personal tank and returns any excess propane back to the delivery truck. This is similar to a safety valve, except the vapor equalizing valve ensures the propane is delivered at proper pressures for optimum use, not safety. This is especially crucial during hot weather or in warm environments, as that can increase the pressure.

This specialized valve is meant for use by propane companies only. It allows operators with the proper tools to drain liquid propane from the tank. Propane tanks must be drained to <5% capacity levels before they can legally be moved.

IPS Equipment specializes in supplying propane marketers with reliable valves, fittings, regulators, and more for propane systems. Contact us today to learn more about our comprehensive products or services, or browse through our catalog to start your order.

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But how much do you know about your home’s propane system, specifically, your propane tank? You should learn about your propane tank, as well as propane safety.

All propane tanks, including the cylinders you use for your BBQ grill or firepit, are required by law to have pressure relief devices that allow for the release of excess pressure inside the tank.

A strong spring keeps the safety relief valve closed as long as the pressure inside the tank is at a safe level. If the pressure in the tank reaches the same amount of pressure of the spring, the safety relief valve is opened. If that happens, you’ll hear a hissing sound coming from the tank as pressure is dissipated. In instances where the pressure in the tank is much higher than that of the spring, the valve will fully open. You’ll hear a pop if that occurs.

Once the pressure is down below the pressure of the spring, the valve closes on its own. If the valve pops open, it may be replaced. However, this is a job for a professional. DO NOT try to fix or replace it on your own. Contact us for assistance.

There needs to be room inside your propane tank to accommodate such a large amount of expansion. That is the reason your propane tank is filled to 80% of its capacity and not to 100%. For example, a 500-gallon propane tank is filled to 400 gallons. The 20% of the tank that is empty space allows the propane to safely expand.

Expansion is why propane tanks are painted white or beige. Light colors reflect heat away from your tank, minimizing how much the propane in there will expand. Dark colors, on the other hand, retain heat. That much retained heat can cause the propane inside your tank to expand to dangerous levels.

A certified pressure relief valve testing contractor must perform all inspections. That’s where Foster Fuels comes in. Our inspectors can advise when testing is necessary and when a replacement would be a more cost-effective option. We also offer comprehensive preventative maintenance programs that can extend the life of your pressure relief valves and related safety equipment, saving you money over the long term with services such as:

Reminding you valves over 10 years old must be tested or replaced prior to the following scheduled inspection, which is two years from the current inspection.

Virginia has its own set of requirements for pressure relief valve testing and certification. These are primarily based on NFPA 58 and the Virginia Department of Labor and Industry. State requirements establish a propane pressure relief valve testing frequency of once every 10 years for most equipment. The state code also sets a compliance schedule of two years from the initial inspection date. For more information, contact Foster Fuels directly.

State and NBIC requirements present several challenges for businesses that rely on propane in their facilities. Organizations with multiple tanks may find the time and money required for pressure relief valve testing—including downtime and flaring of vapor, if necessary—to be overly burdensome. The limited time allotted to ensure all tanks are inspected and tested is an additional difficulty.

One feature you need to learn more about is the tank’s safety relief valve. All propane tanks, including the cylinders you use for your grill, are required by law to have pressure relief devices that allow for the release of excess pressure inside the tank.

The safety relief valve is designed to protect your propane tank from rupturing in case excess pressure builds up in the tank. It is also called a pop-off valve, pressure-venting valve, or a relief valve.

The safety relief valve is kept closed by a very strong spring as long as the pressure inside the tank is at a safe level. If the pressure in the tank reaches the same amount of pressure of the spring, the safety relief valve is opened. If that happens, you’ll hear a hissing sound coming from the tank as pressure is dissipated. In instances where the pressure in the tank is much higher than that of the spring, the valve will fully open. You’ll hear a pop if that occurs.

Once the pressure is down below the pressure of the spring, the valve closes on its own. If the valve pops open, it may need to be replaced. DO NOT attempt to repair or replace this on your own. This job requires a professional. Contact us to help.

That’s why, when we deliver your propane, we fill your tank to 80% full. You may have noticed that and wondered if it was a mistake. It’s intentional. That remaining 20% of space in your tank remains empty so the propane has space to safely expand in warm or hot conditions.

For safe, expert propane tank installation, Boehlke Bottled Gas can’t be beat! Contact us today for your new propane tank. And don’t forget to ask about our reliable propane delivery!

Has your propane tank valve gotten stuck yet again? This can put a serious damper if you’ve planned a BBQ, or literally anything that requires your propane tank. But here’s some good news: this article will tell you exactly how to unstick a propane tank valve.

Before we move onto the meat of the matter, you need to understand how your propane tank works. This applies to anything that runs on propane: fireplaces, water heaters, stoves, gas grills, and even RVs. Knowing how your tank operates will make it easier to troubleshoot minor issues.

A basic tank is filled with propane liquid and uses a special machine that forces the propane gas into the tank under pressure, turning it into its liquid form. It remains pressurized in the tank until the valve is released. When the valve is turned, the pressure decreases and the gas converts to vapor and escapes through the opening.

The propane gas is allowed to escape the canister under a certain pressure determined by the size of the valve. Large commercial propane tanks have multiple valves and gauges.

The main valves are the fill valves to refill the tank, a service valve to release the propane, and a relief valve. The relief valve prevents too much pressure from building up in the tank and exploding.

Tanks also have gauges that measure the level of liquid in the tanks called a float gauge, as well as a vapor recovery valve that can be used to release excess vapor in the tanks when getting it serviced.

The tanks are often closed very tightly to prevent leaks. If your propane tank won’t open after you bring it home the first time, try using a wrench or a pair of pliers. You can also unhook the tank from your stove and apply a bit of oil to the valve, before trying to yank it open with pliers.

Before you try to fix a propane safety valve (or any other tank valve), you need to identify the cause of the blockage. This will determine what you need to do to correct the issue.

The most important thing to bear in mind is that propane is highly combustible. When correcting a faulty tank valve, make sure you don’t puncture the tank and cause more damage. Safety is always a priority, so work in a ventilated area and do not light matches or lighters near your tank.

Set the propane tank on a steady, level surface. Make sure you are in a dry and cool area. Carefully check the tank for any signs of obvious damage and try to find the source of any possible leaks.

Wrap the rubber band around the outer edges of the valve to get a better grip on the blocked valve. Once you get a firm grip, twist firmly to loosen and dislodge the valve with your hand.

If this doesn’t work, spray a bit of oil or lubricant on the valve. Shake the valve back and forth to loosen it up, and then try to twist it open once again.

If the valve is still stuck, use a pair of pliers or a wrench to force it open. Grasp the edge of the valve with your pliers firmly and twist counterclockwise to open the valve. Try not to use too much pressure or as this can break the valve instead.

If your valves have rust or water damage, assess the situation. If it is still in the early stages, you can use baking soda and vinegar to get rid of the rust. However, if it is too far gone, you will need to replace the valve.

To avoid the fuss of a propane tank valve that needs to be dislodged, you can follow a few simple steps to prevent it from happening in the first place.

Don’t twist the valve closed too tightly. This might sound obvious, but people tend to close the valve really tightly, especially after a refill. Shut it tight, but don’t overdo it.

After buying a new tank or refilling your old one, smack the bottom of the tank on the ground once or twice. This will loosen the valve so you can open it more easily.

Don’t open the valve of a new cylinder rapidly as this can make it get jammed the next time. Instead, test the water and work it slowly and carefully.

If your propane tank leaks when connected, you most likely need a new valve. Check for the site of the leak by spraying soapy water at the valve, connection point, and pipes. If you see bubbles at the valve or connection, the gasket is broken and the valve requires replacing.

Soak the hose for a few minutes in warm soapy water to clean it. Use grease-cutting dish soap or something similar to break down accumulated oil and debris. Rinse the hose thoroughly under running water and allow it to dry.

The propane tank shut-off valve is your best bet during leaks if the hose or valve isn’t the one behind the leaks. The service or shut-off valve is the metallic spigot-like dial located under the tank cover and hooked to the top of the tank.

You need to use this valve to turn the gas off at the tank in the event of an emergency or leak. Always turn this valve to the right (clockwise), completely to shut off the gas.

This kind of valve is required on all large 4-to-40-pound commercial cylinders in vapor service. The OPD valve is a protective device and is exactly what it sounds like. It prevents the tank from overfilling.

Place the open jaws of the crescent wrench over the large bolt of the tank’s gas regulator. This is located at the meeting point of the propane tank and the gas regulator. Use the thumbscrew to grip the jaws around the large nut.

Then, loosen the nut with the wrench. Continue to remove the nut by hand until you can pull the neck of the regulator from the propane tank connection. You may catch a small whiff of gas as the regulator’s neck is pulled from the propane tank, but this is nothing to be worried about.

Remove the tank from the grill’s cart. In some models, you might have to loosen a safety strap. Store the empty tank in a safe and dry location, outdoors and well away from any flames.

It is perfectly normal to smell a little propane as tiny amounts can leak when the tank is in use. You can also smell the gas when the tank is nearly empty.

It is common for a propane tank to hiss. Hearing this sound is an indication that your tank is leaking so shut off all the valves and check for the location of the leak.

It is always a little scary when dealing with gas tanks, as we are well aware of the risks. However, knowing how to handle any kind of malfunctioning will make it much easier to deal with.

Once you know how to unstick a propane tank valve, you can loosen the valve or spigot without any trouble. And this will make the process of grilling much easier. Happy cooking!

MISSISSIPPI STATE -- People trying to refill their propane tanks for summer grilling may encounter an extra expense as they find they must buy a new safety valve.

As of April 1, all four- to 40-pound propane tanks must be equipped with an Overfill Protection Device. This is a new valve that replaces the one on existing tanks. The new valves are marked with "OPD" to designate their compliance with the state law and have three-lobed valve handles, rather than the five-lobe type found on older propane tanks.

"The device will not allow the tank to be filled more than 80 percent full, leaving some room for the gas to expand," said Herb Willcutt, safety specialist with Mississippi State University"s Extension Service.

A typical grill"s 20-pound cylinder holds five gallons of propane. The propane is filled in the bottle as a liquid, and the new valves have a float that rises as the bottle is filled to lock off the opening once the tank has reached 80 percent full.

Willcutt said when a propane tank gets hot, the pressure rises dramatically. Both old and new valves have a relief valve that allows gas to escape if too much pressure builds up. At a temperature of 70 degrees, an 80 percent-full propane tank has a vapor pressure of 124 pounds per square inch.

"This is a safe, workable pressure," Willcutt said. "Overfilling contributes to much higher pressure, especially when the tank warms. When pressure rises beyond about 325 psi, the tanks are designed to release gas into the atmosphere. In an enclosed area, this creates an explosion and fire potential."

If a propane tank overheats as it is venting, Willcutt said to get it out of enclosed areas and away from sources of fire, lay it on its side and cool it with a water hose. Even if the tank is burning from the relief valve, cooling with a water hose can reduce the risk of fire to surrounding structures and allow the relief valve to shut itself off when the tank reaches a safe internal pressure.

"Laying a non-burning tank on its side allows the liquid to escape faster and relieves pressure more quickly. The water hose cooling it will reduce the pressure enough that it will quit relieving itself," Willcutt said.

Owners of propane tanks with the old valve can replace these at most locations that refill tanks. Either exchange the tank for a new one with the correct valve or place the new valve on a structurally sound existing tank.

"If you"re replacing the tank and don"t want the old one, the best option is to leave it with the dealer and let them make sure it is properly disposed of," Willcutt said.

State law does not allow propane tanks to be transported in the passenger compartment of a vehicle. This means they can"t be carried in sport utility vehicles, hatchbacks or similar passenger vehicles. Transport them upright in the trunk of a car or bed of a truck and secured so they can"t roll around.

Gauges, regulators, valves … welcome to your propane tank! If you’ve only used propane to power a gas grill in the past, the larger tanks may be intimidating. It can seem like a whole new world at first, especially if you’re used to powering your home using other fuel sources like natural gas, whose components may not be as visible. And while your propane supplier often handles a lot of the periodic propane tank maintenance and refilling, it’s a great idea to know the basics — especially if you own your own tank. No worries — we’ll make it easy for you. So you can feel confident and secure managing the day-to-day operations of living with propane.

Here’s a quick glossary ofpropane tank parts along with their functions — plus a few tips for making sure your propane tank stays in good working order.

PropaneFill Valve: When your propane is delivered, this is the valve that the technician attaches to the fuel hose. The hose from the truck connects to this valve. The hose end coupling screws into the valve with a gasket to create a reliable seal that prevents gas from escaping.

Service (Shut Off) Valve: Essentially the master switch to the propane supply, the service valve is the point at which propane gas enters the piping system to supply all the appliances that connect to it.

Float Gauge Assembly:The float gauge shows the volume of propane in the tank. Sometimes called a dial gauge, the float gauge is made of several parts: a mechanical float that lives inside the tank (much like the float you’d see if you lift the lid off your toilet’s water tank) connected to a reader on the outside of the tank that displays the liquid level (this may be a numeric gauge or a visual one color coding for safe, under-, and over-fill levels). It doesn’t show the exact amount of liquid in the tank, but it is reliable for everyday monitoring of your tank’s propane level.

To check the approximate propane level in your tank, look at the float gauge. It will be a round (or roundish) device on the tank (see image above) with a needle over a range of numbers or graphic indicators. The numbers will range from 5 to 95—indicating a percentage of volume, not the number of gallons remaining. If you see a level below 30, it means that your tank is getting low and needs to be refilled.

If you’re an AmeriGas customer, you may also have a remote tank monitor that automatically transmits the tank’s percentage to us every day. You can check your tank’s current status—without looking at your tank—by logging into your AmeriGas account.Learn more about our online services.

Relief Valve: This is the safety relief mechanism designed to vent propane in the event that pressure builds — for example, if the heat rises very suddenly to an extreme temperature (as might happen in a forest fire or other emergency situation). A spring inside the valve is designed to release if the pressure inside the tank builds to a certain level, at which point the valve will open slightly and start to hiss. If pressure rises excessively, the valve will open completely. The relief valve allows pressure to be released quickly and safely. All propane tanks are required by law to have a relief valve. You may also hear it called a pop-off valve or a pressure-venting valve.

FixedLiquid Level Gauge: Also known simply as a fixed liquid level gauge or the bleeder valve, this is the only tank component that gives a precise measure of how much liquid propane is in the tank. It’s used only by certified propane service providers when filling the tank — and even then, it’s used only to monitor, not to refill (propane goes into the tank through the fill valve).

Vapor Return Valve: Also known as the vapor equalizing connection or vapor equalization valve, this feature is required on all ASME propane tanks. They are usually deployed in the event that the liquid in the container becomes very overheated and must be evacuated from the container.

Liquid Withdrawal Valve: Used by technicians to withdraw liquid propane from the tank so it can be moved or disposed of. Note: Never attempt to remove liquid propane from a tank on your own. This should only be done by a professional using specialized equipment.

PropaneRegulator:Though they come in many shapes and sizes, the function of all propane regulators is the same — they maintain a safe and effective level of pressure on propane within the tank. This helps keep the flow steady and usable. These components make a persistent humming noise when operating — don’t worry, it’s normal.

You’re aware of what your tank should look like when it’s “all systems go” — as well as some important warning signs that will tell you it’s time to contact a professional. Armed with these basic terms and tips, you’re set up for propane success.

Safety Note: We do not recommend attempting any propane system adjustments, repairs, or maintenance on your own. Only certified propane professionals are equipped with the gear and knowledge to properly assess and address propane systems safely.Please contact us for more information and service.