RS Components, Ltd. Datasheets for Pressure Relief Valves

Pressure relief valves are self-actuated safety valves designed to relieve excess pressure upstream from the line.
Pressure Relief Valves: Learn more

Product Name Notes
1366484
1366721
• Male thread connection. • Flow rate adjustment. • Exhaust air flow control. • Port flow control with silencer for direct mounting on the valve / terminal. • Low sound...
807823 1.1 Adjustment element (grub screw) for pressure setting and protective cap,2. Valve fixing holes ,3. Optional connection port P. (e.g. for pressure measuring) ,P Pressure or pump port ,T Tank...
7948423
7948432
7948439
7948441
7948448
7948457
All Reliance pressure vessels are supplied with a replaceable membrane, which separates the water and air, to prevent contamination of the water system, corrosion of the pressure vessel or pressure...
7998850
7998853
7998862
7998866
7998869
7998872
7998875
7998878
Applications: Steam. Min. Set pressure 0.2 barg. Overpressure 10%. Blowdown Gases 10%, liquids 20%. Connections: Threaded BSP / NPT. Discharge coefficients k= 0.55 for gases, k= 0.48 for liquids. Design...
7948316
7948325
Automatic Anti-Vacuum Valve for use with hot water heaters to prevent a vacuum forming in installations where there is the potential of the draw off rate exceeding the rate of...
2463289 Body material - Brass. Maximum Operating Pressure 6 bar. 0.1 bar to 0.6 bar Differential Pressure Range. In systems with radiator thermostats the DU145 opens automatically as the thermostatic radiator...
2110430 Body material - DZR Brass. For heating systems and pressurised water systems. Cartridge design for ease of service and replacement. High lift design for increased discharge capacity Connection = 1/2...
2110446 Body material - DZR Brass. For heating systems and pressurised water systems. Cartridge design for ease of service and replacement. High lift design for increased discharge capacity Connection = 3/4...
3890597
3890604
3890610
3891449
3891461
3891483
3891506
Body material - Gun Metal. Complies with BS6759. Boilers and pressure vessels, designed to BS specifications, usually require the fitting of a safety valve that complies with BS6759 Connection =...
1844491 Essential for the safe release of pressure build-up in a system. Plugs directly into an airline (unit is supplied in an individual yoke) or can be plugged into a 1/2...
1366507
1366508
1366509
1366510
Festo GRLA series exhaust flow regulators with integrated QS push-in fitting. The QS push-in fittings and captive seals, as well as a robust metal design provide a simple and reliable...
1259955
1259956
1259957
1259958
1259959
1259960
1259961
Festo VBQF series quick exhaust valves allow higher piston speeds to be achieved on the return stroke of single and double-acting drives. Compressed air flows from the control valve via...
1259894
1259896
1259923
1260224
Festo VFOF series one-way air supply flow regulators with integrated QS push in fitting. The QS push in fittings and captive seals, as well as a robust metal design provide...
2099204
2099210
2099226
2099232
2099248
7005813
7005822
7005825
7005829
8436987
8436996
Integral exhaust restrictor and silencer. Excellent control characteristics. Push-in inlet and tapered thread outlet connections. Pressure range 1 to 10.2 bar. Typical noise reduction 20dB Manufacturer Series = ASV Connection...
6862485
6862494
8444073
8444085
8508791
8508795
8508798
Miniature In-Line quick exhaust valves. Option of built-in silencer or facility to pipe away exhaust. Exhaust connection is the same tube size as the main connections Manufacturer Series = AQ...
2099169
2099175
2099181
2099197
7005778
9076602
Miniature In-Line quick exhaust valves. Option of built-in silencer or facility to pipe away exhaust. Exhaust connection is the same tube size as the main connections Manufacturer Series = AQ240F,...
6862504
7927713
7927722
Minimises installation time and cost. Accepts nylon or polyurethane tubing. Wide variety of sizes. Speed accurately controlled even at low velocity. Constant speed easily set. Retaining function prevents loss of...
2390866
2679412
2679428
Protects air-operated equipment from over pressure. Temperature range -34°C to +65°C/80°C (72//74). Push-to-lock adjusting knob, optional tamper proof cover. Quick clamp required Manufacturer Series = V74G Inlet Port = G...
3989114 Protects compressed air systems from over pressurisation. Low torque push-to-lock adjustment knob. Compact design. Panel mount dimensions (30mm dia. hole 6mm panel thickness maximum) or bracket mounting. Relief pressure adjustment...
3158663
3158679
3158685
3158691
Quick exhaust valve enables air to be exhausted quickly from reservoirs and cylinders. Allows higher cylinder speeds to be achieved. Simple, compact design and construction, and very reliable in operation...
3896719
3896725
3896731
3896747
Quick exhaust valve, greatly increases piston speeds. Extremely low operating differential. May be used as differential shuttle valve. Aluminium body with nitrile diaphragm Manufacturer Series = P4Q Connection Type =...
7036734
7036738
7036747
Rapid exhaust of volumes of air enabling higher cylinder speeds Poppet Valve. Brass body nickel plated. working pressure 0.3 â†' 10 bar. Temperature range -18 â†' 70 °C Manufacturer Series...
7036722 Rapid exhaust of volumes of air enabling higher cylinder speeds Poppet Valvve. Aluminium body. Working pressure 0.5 â†' 10 bar. Temperature range of 0 â†' +80°C Manufacturer Series = 08...
2342019 Residual Pressure Relief Valve. Enables easy exhaust of residual or trapped air, simply by pushing the button Manufacturer Series = KE Connection Type = Tube Tube Connections = 6mm
2342025 Residual Pressure Relief Valve. Enables easy exhaust of residual or trapped air, simply by pushing the button Manufacturer Series = KE Connection Type = Tube Tube Connections = 8mm Maximum...
3989120
3989136
Simple, low cost units. Suitable for direct connection to pressure vessels and associated components. Pop-type operation with plunger test point. Relief setting accuracy +/-20% Manufacturer Series = 1002 Connection Type...
3989142
3989158
Simple, low cost units. Suitable for direct connection to pressure vessels and associated components. Pop-type operation. Relief setting accuracy +/-20%. Brass adjusting cap Manufacturer Series = 61B2 Connection Type =...
7770349 The Altecnic series 311 safety relief valves are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components.
7770352 The Altecnic series 313 safety relief valves with presure gauge are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler...
7948344 The differential bypass valve is used to stabilise the circulation, flow rate and pump pressures in central heating systems. Designed for a quick and simple installation where the valve is...
7436633
7436639
7436645
7436649
7436658
The SMC Series AMC Exhaust Cleaner has been designed to ensure clean plant air is available, and additionally, to reduce noise within a pneumatic system. The exhaust cleaner unit must...
8435520
8435536
The VHS series is a safety manual switching valve for preventing accidents that could be caused by the residual pressure while performing maintenance service on a pneumatic system. The valve...
2108443 Unit opens when pressures greater than set pressures are reached. Unit closes when pressure is less than set pressure. Relieving range 0.5 to 8.5 bar. Complete with mounting bracket Manufacturer...