Gas safety valves

View our wide range of gas safety valves that are used to relief overpressure in your system. A safety valve vents the medium to prevent pressure build up, hereby increasing the safety of the system. Most safety valves use a spring-principle to... Read more Read more

Product Brand Connection size Blow-off pressure (Adjustable) (bar) Material Blow-off capacity (m³/h) Seal Connection type Min temperature (°C) Max temperature (°C) Blow-off characteristic Material quality Blow-off pressure (Non-adjustable) (bar) Approval Height (mm) Surface protection
G 1/4'' Brass Adjustable...
£8.15 (£6.74 excl vat)
+3 days
Tameson 1/4 inch 6 bar to 12 bar Brass 38.99 FKM (FPM) Outer thread cylindrical... -10 180 Low-lifting - - - - -
G 1/8'' Stainless steel 303...
£24.13 (£19.94 excl vat)
+3 days
Tameson 1/8 inch 0.5 bar to 1 bar Stainless steel 3 FKM (FPM) Outer thread cylindrical... -10 180 Low-lifting Stainless steel 303 (1.4305) - - - -
G 1/4'' Stainless steel 316...
£201.15 (£166.24 excl vat)
+3 days
Tameson 1/4 inch - Stainless steel 122 FKM (FPM) Outer thread cylindrical... -25 180 Low-lifting Stainless steel 316 (1.4401) 4.2 TUV Certification 73 -
G 1/2'' Stainless steel 316...
£201.15 (£166.24 excl vat)
+3 days
Tameson 1/2 inch - Stainless steel 213 FKM (FPM) Outer thread cylindrical... -25 180 Low-lifting Stainless steel 316 (1.4401) 8 TUV Certification 77 -
G 1/2'' Brass Pre-Set...
£27.58 (£22.79 excl vat)
+3 days
Tameson 1/2 inch - Brass 172 FKM (FPM) Outer thread cylindrical... -25 180 Low-lifting - 6.3 TUV Certification 77 -
G 3/8'' Brass Pre-Set...
£28.73 (£23.74 excl vat)
+3 days
Tameson 3/8 inch - Brass 302.5 FKM (FPM) Outer thread cylindrical... -25 180 Low-lifting - 11.76 TUV Certification 75 -
G 1/2'' Brass Pre-Set...
£27.58 (£22.79 excl vat)
+3 days
Tameson 1/2 inch - Brass 361 FKM (FPM) Outer thread cylindrical... -25 180 Low-lifting - 14.2 TUV Certification 77 -
G 1/4'' Brass Pre-Set...
£26.43 (£21.84 excl vat)
+3 days
Tameson 1/4 inch - Brass 450 FKM (FPM) Outer thread cylindrical... -25 180 Low-lifting - 17.9 TUV Certification 65 -
G 1/4'' Nickel-platedBrass...
£29.88 (£24.69 excl vat)
+3 days
Tameson 1/4 inch - Brass 189 FKM (FPM) Outer thread cylindrical... -25 180 Low-lifting - 7 TUV Certification 65 Nickel-plated
G 3/8'' Brass Pre-Set...
£28.73 (£23.74 excl vat)
+3 days
Tameson 3/8 inch - Brass 404 FKM (FPM) Outer thread cylindrical... -25 180 Low-lifting - 16 TUV Certification 87 -
G 1/4'' Brass Pre-Set...
£26.43 (£21.84 excl vat)
+3 days
Tameson 1/4 inch - Brass 203 FKM (FPM) Outer thread cylindrical... -25 180 Low-lifting - 7.6 TUV Certification 65 -
G 1/4'' Nickel-platedBrass...
£29.88 (£24.69 excl vat)
+3 days
Tameson 1/4 inch - Brass 61 FKM (FPM) Outer thread cylindrical... -25 180 Low-lifting - 2 TUV Certification 65 Nickel-plated
G 1/2'' Stainless steel 316...
£201.15 (£166.24 excl vat)
+3 days
Tameson 1/2 inch - Stainless steel 308 FKM (FPM) Outer thread cylindrical... -25 180 Low-lifting Stainless steel 316 (1.4401) 12 TUV Certification 77 -
G 1/4'' Brass Pre-Set...
£25.85 (£21.37 excl vat)
+3 days
Tameson 1/4 inch - Brass 19 FKM (FPM) Outer thread cylindrical... -25 180 Low-lifting - 0.8 TUV Certification 65 -
G 1/4'' Brass Pre-Set...
£25.85 (£21.37 excl vat)
+3 days
Tameson 1/4 inch - Brass 117 FKM (FPM) Outer thread cylindrical... -25 180 Low-lifting - 4 TUV Certification 65 -
Gas safety valves

Gas safety valves | tameson.co.uk

View our wide range of gas safety valves that are used to relief overpressure in your system. A safety valve vents the medium to prevent pressure build up, hereby increasing the safety of the system. Most safety valves use a spring-principle to open once the set pressure is achieved.

Safety valves have a unique response characteristic. When the systems pressure exceeds more than 10% of the goal pressure, the safety valve opens instantaneously and releases all of the overpressure. This is usually accompanied by a popping sound. When the systems pressure is down to approximately 10 to 20% below the goal pressure, it closes again. This build up and aggressive relief of the systems pressure stresses the system heavily and is only suitable as a last-resort safety measure.

These safety valves are specifically made for gas-based applications and therefore not suitable for systems transporting liquids. Safety valves come in two types, adjustable and non-adjustable. Adjustable safety valves can be manually set to the desired safety pressure. They have varying blow-off capacities as a function of the pressure. Non-adjustable safety valves have a pre-set safety pressure that you buy it at and it can't be changed. They have a predetermined blow-off capacity.

In high-pressure gas systems, it is recommended that the outlet of the safety valve is in the open air. In systems where the outlet is connected to piping, the opening of the safety valve will give a pressure build up in the piping system connected to the outlet of the safety valve.