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
• Male thread connection. • Flow rate adjustment. • Exhaust air flow control. • Port flow control with silencer for direct mounting on the valve / terminal. • Low sound...
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...
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...
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...
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...
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...
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...
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...
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 =...
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...
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...
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...
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...
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...
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...
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,...
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...
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...
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...
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...
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 =...
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...
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...
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
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...
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...
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 =...
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.
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...
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...
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...
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...
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...