brass safety valve designed for espresso pots manufacturer

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The devil is in the details. It is often the smallest things, the particularities, that make all the difference. This is also the case in regards to the preparation of a good coffee, a ritual in which all the steps and every single component play a fundamental role. Among all, one of the most important elements is the Moka valve. Often ignored, it is vital not only for the quality of the coffee, but also for the safety of those who prepare it.

The valve was born with the invention of the Moka Express in 1933. It is a safety valve positioned on the bottom chamber. To better understand the importance of the valve and its use, we need to take a step back and illustrate step by step

If, for some reason, the water fails to pass through the filter, the pressure inside the bottom chamber would begin to increase rapidly. This can happen, for example, when:

This is where the valve of the Moka comes into play. It must open when the pressure is too high. By doing so, it allows the steam to escape regularly, without causing any damage. In short, the Moka’s safety valve provides security. Hence, it should only intervene when the coffee maker is used under abnormal operating conditions.

A long-standing and debated question: how far can you fill the bottom chamber for a state-of-the-art coffee? The Moka valve can come in handy to answer this dilemma. Another important role of the valve is that it acts as a "measuring cup". Its position on the bottom chamber is not accidental. Rather, it indicates to those who prepare the coffee the correct amount of water to use. The only exception is for some special coffee pots that are already equipped with a measuring cup. Ideally the water should reach just below the safety valve.

The Moka valve, therefore, is not a decoration or a mere design element. Rather, it is a very important component for the correct functioning of the coffee maker. It guarantees safety and plays a part in the making of an excellent coffee.

Consequently, it is necessary to keep it clean and maintain it regularly. For example, using tap water to make coffee brings with it the risk of limescale deposits obstructing the hole in the valve. The resulting danger is that it could get clogged.

We have seen that one can simply use hot water to clean the Moka valve. To avoid limescale obstructions, simply move the piston that comes out of the valve along its axis when washing it. To ensure the Moka functions correctly, it is recommended to repeat this checkup periodically.

Please read the main item listing description for full details of the item offered for sale and any special terms that apply to the item offered for sale. By completing this purchase you are in agreement and accept our terms and conditions of sale. If you require any clarification about our returns policy or warranty information on any specific item then please contact us before making a purchase.

PRIVACY/DATA POLICY: Please note that we do not store any customers financial or personal information. We will not contact customers unless there is an issue that relates directly to the purchase.

POSTAGE/DELIVERY: Most orders processed before 3:30 pm are dispatched same day, the next working day delivery by courier service is for mainland UK only, please note that certain remote areas (Highlands & Islands) and Northern Ireland are not covered by our daily couriers, these areas may be sent using an alternative courier service and may take a little while longer. Please note that most couriers will only attempt delivery on normal working days Monday to Friday. We ask that you include a contact telephone number when completing the sale for us to place on the couriers manifest, some of our couriers will not accept parcels without a contact number. Parcels sent out on the standard next day courier can be delivered any time between 7:00 am & 10:00 pm. If nobody is available to accept the parcel then the driver may leave the parcel in a safe place or with a neighbour. If nobody is available then the parcel will be returned to us. Please check all items immediately, we cannot be held responsible for any items that have been signed for as ok and then later reported as missing from the parcel or damaged.

PART NUMBERS & MANUFACTURERS REFERENCE: Many of the parts on sale are supplied by the original equipment manufacturers (OEM) whilst others are offered as suitable replacements or alternatives. Any references made to specific manufacturers and OEM part numbers are for guidance and identification purposes only and does not imply that any parts supplied are purchased direct from the OEM. Parts supplied as alternatives may differ from the OEM"s exact specifications.

RETURNS AND REFUND POLICY: We will gladly refund the full payment amount (excluding carriage charges) if you have purchased an item in error, no longer require the item or find it is not suitable for the purpose you bought it for as long as the item is returned unused, in its original condition and fully re-saleable within 30 days of receipt. We cannot refund the original outgoing carriage charge for items that have been ordered in error. Return carriage charges have to be at the buyers expense and items must be sent recorded or secure delivery to enable a full refund.

WARRANTY INFORMATION: Unless otherwise stated in the item description, all items for sale are offered with a thirty day warranty against fault or manufacturing defects with the exception of Water Pumps, Electrical Motors, Heating Elements, PCB"s, Digital Controllers, Rubber Gaskets, Glassware and Lamps. These items are not offered with any warranty. The reason that these particular spare parts are not supplied with any warranty is if you have a fault with your existing part or the part has failed completely then you need to establish what caused the part to go faulty before replacing it with a new one, you may have an underlying fault that has led to the failure of the original part and if not rectified could cause the same fault with the new part. Parts should always be diagnosed and installed by a suitably qualified person, if parts are replaced without the correct in depth diagnosis the new part can suffer irreparable damage immediately, for this reason we cannot offer any warranty on certain types of spare parts.

WARRANTY CLAIMS: If an item does require returning under a warranty claim, we would request a report from a qualified engineer or service company stating the exact nature of the fault and the appliance details of the appliance it was installed on, this needs to include the manufacturers name and the model number of the appliance. The majority of commercial spare parts we sell are not for diy type installation and should only be diagnosed, identified and installed by a suitably qualified person, most manufacturers will not entertain and in some cases reserve their right to refuse warranty claims where specialist parts have been diagnosed, identified and installed by none qualified persons. Warranty claims will not be accepted for items that have been misdiagnosed, incorrectly identified or damaged due to incorrect installation procedure.

LIABILTY DISCLAIMER: The seller is not responsible for the diagnosis, identification or installation of any parts supplied which must always be fitted by a competent person. The seller will not accept any responsibility for any losses incurred either as a direct or indirect result of appliance failure, component failure, lost or missing parcels including delayed deliveries.

Please read the main item listing description for full details of the item offered for sale and any special terms that apply to the item offered for sale. By completing this purchase you are in agreement and accept our terms and conditions of sale. If you require any clarification about our returns policy or warranty information on any specific item then please contact us before making a purchase.

PRIVACY/DATA POLICY: Please note that we do not store any customers financial or personal information. We will not contact customers unless there is an issue that relates directly to the purchase.

POSTAGE/DELIVERY: Most orders processed before 3:30 pm are dispatched same day, the next working day delivery by courier service is for mainland UK only, please note that certain remote areas (Highlands & Islands) and Northern Ireland are not covered by our daily couriers, these areas may be sent using an alternative courier service and may take a little while longer. Please note that most couriers will only attempt delivery on normal working days Monday to Friday. We ask that you include a contact telephone number when completing the sale for us to place on the couriers manifest, some of our couriers will not accept parcels without a contact number. Parcels sent out on the standard next day courier can be delivered any time between 7:00 am & 10:00 pm. If nobody is available to accept the parcel then the driver may leave the parcel in a safe place or with a neighbour. If nobody is available then the parcel will be returned to us. Please check all items immediately, we cannot be held responsible for any items that have been signed for as ok and then later reported as missing from the parcel or damaged.

PART NUMBERS & MANUFACTURERS REFERENCE: Many of the parts on sale are supplied by the original equipment manufacturers (OEM) whilst others are offered as suitable replacements or alternatives. Any references made to specific manufacturers and OEM part numbers are for guidance and identification purposes only and does not imply that any parts supplied are purchased direct from the OEM. Parts supplied as alternatives may differ from the OEM"s exact specifications.

RETURNS AND REFUND POLICY: We will gladly refund the full payment amount (excluding carriage charges) if you have purchased an item in error, no longer require the item or find it is not suitable for the purpose you bought it for as long as the item is returned unused, in its original condition and fully re-saleable within 30 days of receipt. We cannot refund the original outgoing carriage charge for items that have been ordered in error. Return carriage charges have to be at the buyers expense and items must be sent recorded or secure delivery to enable a full refund.

WARRANTY INFORMATION: Unless otherwise stated in the item description, all items for sale are offered with a thirty day warranty against fault or manufacturing defects with the exception of Water Pumps, Electrical Motors, Heating Elements, PCB"s, Digital Controllers, Rubber Gaskets, Glassware and Lamps. These items are not offered with any warranty. The reason that these particular spare parts are not supplied with any warranty is if you have a fault with your existing part or the part has failed completely then you need to establish what caused the part to go faulty before replacing it with a new one, you may have an underlying fault that has led to the failure of the original part and if not rectified could cause the same fault with the new part. Parts should always be diagnosed and installed by a suitably qualified person, if parts are replaced without the correct in depth diagnosis the new part can suffer irreparable damage immediately, for this reason we cannot offer any warranty on certain types of spare parts.

WARRANTY CLAIMS: If an item does require returning under a warranty claim, we would request a report from a qualified engineer or service company stating the exact nature of the fault and the appliance details of the appliance it was installed on, this needs to include the manufacturers name and the model number of the appliance. The majority of commercial spare parts we sell are not for diy type installation and should only be diagnosed, identified and installed by a suitably qualified person, most manufacturers will not entertain and in some cases reserve their right to refuse warranty claims where specialist parts have been diagnosed, identified and installed by none qualified persons. Warranty claims will not be accepted for items that have been misdiagnosed, incorrectly identified or damaged due to incorrect installation procedure.

LIABILTY DISCLAIMER: The seller is not responsible for the diagnosis, identification or installation of any parts supplied which must always be fitted by a competent person. The seller will not accept any responsibility for any losses incurred either as a direct or indirect result of appliance failure, component failure, lost or missing parcels including delayed deliveries.

La Pavoni Lever Safety Valve Gold Brass body code 396738 is used to replace problematic valves, which usually leads to no pressure buildup and strange sounds during heat up.

With nearly 30 years in the industry, Espresso Parts supplies cafe owners, baristas, and home brewers with the best products and real-world experience available. We are a dynamic team with the sole purpose of providing the best customer service experience.

These are new a design for Nuova Simonelli equipment only. It comes as a kit for retro-fitting most all (commercial) models new and old, but does not come with the anti-vacuum valve. NOT SUITABLE FOR THE PREMIER MAXI; the Premier Maxi was revised to use the smaller, 1/4" safety valve.

Replacement anti-vacuum and safety valve core to suit current model La Pavoni Lever machines. If your machine has steam coming from the safety valve the you need to replace this component.

Sorry, I wasn"t clear. I mean the pressure relief valve that is screwed into the side of the lower chamber. On all of my moka pots, this valve now leaks, so the pot never builds sufficient pressure to function.

I found a similar but slightly larger valve at MSC online, and was able to drill out and re-tap the hole in one of my aluminium moka pots to fit this valve with an o-ring. So that one is repaired. However, drilling out and retapping my stainless steel moka pots will be harder, and I am hoping to find the correct valve as used by Bialetti.

Edit: the valve I found is this one https://www.mscdirect.com/product/details/03244811 1/8" thread, 15-25 psi, $2.44. But it isn"t quite the correct thread to replace the original valve.

Safety valves are an important feature of any pressurised boiler. If your pressurestat fails then the safety valve will open up and discharge excess steam. They can get blocked with lime over time and need to be changed if steam starts escaping from the valve - a regular hiss will come from the valve.

The cylindrical body of this model was often made of brass or copper (but also nickel-plated brass, Sheffield steel, silver or porcelain) and was split into two parts: the internal part (boiler) contained the water to be heated, whilst the external part (cavity) collected the coffee infusion and had a valve plug (at the bottom) or a spout (at the top).

The boiling water went through the filter with such force that the liquid hit the internal part of the glass dome and ran down the external part of the container creating a kind of fountain effect.

Small brass coffee maker patented in Paris by Alexandre Lebrun in 1838. Steam pressure operation, it was fed by a spirit burner. The pressure of the steam pushing downwards rather than up was used by Lebrun for his small, ingeniously designed coffee maker. The ground coffee was pressed down using a pestle, in a box-shaped filter at the base of the coffee pot. The cold water was poured in from above. The lid was locked with a special clamp and the pot heated by the alcohol in a little plate at the base. In just four minutes the coffee was automatically poured into the cup through the finely worked spout.

H. Eicke’s machine was patented in Berlin, Germany in 1878. Although the device was balancing and the burner had a self-extinguishing lid and it was very similar to the compensation siphons Balance system, the way it worked was completely different. In this case, the depression of the vacuum of the boiler was not used for filtering the coffee but rather the pressure of the steam which pushed the boiling water from the boiler to the filter containing the ground coffee. When all the water contained in the boiler had gone through the filter, the coffee maker tipped and the lid of the spirit burner dropped to put out the flame. In this way, the preparation cycle finished automatically.

Elegant, with refined finishes and valuable handcrafted decorations, these two Italian coffee makers produced by Invicta are made of copper-brass and nickel-plated brass and have spirit burners. Two cup capacity.

On the left, the A.G. Oikos model in nickel-plated brass produced by Fratelli Carderoni in Milan. When the water was hot, the whistle signalled that it was time to turn the special tap in order to connect up the front filter containing the ground coffee.

Various steam pressure coffee makers, all made of copper and nickel-plated iron, with spirit burners, produced in Ferrara, Italy, by Fratelli Santini bearing the Aquilas brand and by Figli di Silvio Santini bearing the Orso brand. Two to six cup capacity. Operation of this small, charming machine for home use is simple and it is easy to use. The steam pressure pushes the hot water upwards through the coffee filter and the liquid is poured out from the front spout directly into the cups or a coffee pot.

Italian-made Adele and Stella coffee makers in nickel-plated brass. One to four cup capacity. Small travel and camping coffee makers are very compact and easy to use. The spirit burner and the cups are stored at the base of the coffee maker.

Czechoslovak-made coffee maker bearing the Sport brand. Made in steel and aluminium, it has a two cup capacity and the burner is fed with fuel tablets. This coffee maker was ideal for camping and came in a special box containing all the necessary accessories (fuel tablets, small box for sugar and coffee, teaspoon and tongs for handling the boiling coffee pot) for preparing and tasting the coffee.

Group of Italian stove-top coffee makers in aluminium. On the right, there is the characteristic Columbia Cr�me produced by OMG, steam pressure and pump coffee maker, with a six cup capacity. The pump in the handle makes it possible to increase the water pressure for extracting the coffee, making a larger quantity of coffee cream, or crema.

One of the very first versions of the famous Moka Express produced by Alfonso Bialetti in Crusinallo and sold during the post-war period. It has a solid aluminium structure, is octagonal in shape and features a brass safety valve and rubber gasket between the boiler and pot. Produced in models of varying capacity, the Moka brought a radical change to how Italians drank coffee at home, offering them coffee with a new flavour and stronger, and ousting out the Napoletana coffee maker which was popular at the time. Still today, the Moka is considered an icon of Italian-made goods throughout the world.

Italian coffee makers for families in nickel-plated brass produced in the shape of the column coffee makers for bars of the period. On the left, the Snider, on the right the La Pavoni, both from Milan.

Three Italian-made Eterna coffee makers produced by the company Watt in Pavia. Made in nickel-plated brass and cast aluminium, they are shaped like the column bar machines of the period.

Elegant, sophisticated nickel-plated brass coffee makers produced in Italy by S.I.M.E.R.A.C. in Ferrara (and subsequently Milan), with a two to four cup capacity. The coffee filter is set apart from the body of the coffee maker in order to prevent the ground coffee from heating up during machine operation. The spouts pour the coffee directly into the cups resting on the tray at the base.

The TATA coffee maker-cum-alarm clock produced by Turin company G.M.P. is both curious and ingenious. Designed for those who are unable to get up in the morning without having first sipped a steaming cup of coffee, this machine pours the last few drops of freshly-made coffee into the cup at the same time as the alarm goes off.

The French-made Cafeti�re Veritas from Lyons can produce up to six cups of coffee at a time. Made of nickel-plated brass (the 1920 model), it features a characteristic fountain shape and was redesigned for the 1940 Luxe model.

This German model, Paluxette, was very popular in Germany. Produced in solid steel and chrome-plated brass, it could be altered in height using vertical runners in order to adapt to the size of the coffee pot the user had at home. The small travel version to use in the car utilized a 12 volt supply to prepare a single cup of coffee.

The Italian La Victoria Arduino from Turin was produced in steel, nickel-plated brass and Bakelite and could dispense two to three cups of coffee at a time. This beautiful machine was built in the style of the period, bearing the enamelled brass brand of the factory in full view. When the steam reached the right pressure, the upper tap was closed and the hot water pushed through the coffee in the portafilter with a ‘bayonet’ connection and straight into the cups resting on the base.

Original in shape with elegant decorative motifs embossed on the aluminium body, this large electric machine has a four cup capacity. Moreover, the tap at the base of the heater dispensed water for making tea and infusions.

Italian-made coffee pots produced by R.V. in Milan. Made in hand-hammered copper, it works by pressure operation with an electric supply. Two to five cup capacity. With an original, topical design it features fine, carefully produced finishes. The hot water, driven through the filter containing the coffee, poured straight into the cup.

Group of electrical Italian coffee makers with a copper boiler and nickel (or chrome) plated brass body, pressure operation. Two to five cup capacity. The electric cables are clad in two-coloured swab with copper and porcelain pins.

Bavaria model produced in Germany on the left, and a large machine produced in Switzerland on the right, both electric with spouts for pouring the coffee into a jug.

Group of beautiful electric Italian machines in nickel or chrome-plated brass and Bakelite. From left to right: Diana Mignon from Turin, SCM and two models produced by Neowatt in Milan.

Chrome-plated brass coffee maker produced in Italy by Turrini B.T.D.. The various parts that make up this machine, the electrical resistance, boiler and coffee filter, are held together tightly by a clip with a screw.