Pressure Relief Valves

Where pressure overload might lead to catastrophic failure in a system, pressure relief valves are essential. The pressure valves, or PRVs, work by opening when a pressure limit has been reached, and diverting either gas, liquid or liquid-gas mixtures away from the system. How this is achieved depends on the system, but it usually relies on the medium following the path of least resistance offered by the relief valve, and then being disposed of accordingly. Diverted gas might be released into the atmosphere or burned off, and liquids may be diverted into storage or run off.

Once a satisfactory equilibrium has been achieved within the system, the pressure relief valve will then close again until needed. These safety valves are vital components in high pressure systems, as pressure build up can lead to anything from equipment inefficiency and failure, to explosion or fire risk.

PRV or PSV?

Pressure relief valves operate in a similar manner to pressure safety valves, and the two terms are sometimes used interchangeably. However, the key difference is that PRVs operate gradually to regulate pressure, while PSVs operate very quickly to counteract sudden pressure spikes. To this end PRVs are more commonly used in liquid systems, and PSVs are more commonly used in gas systems.

Applications

Pressure relief valves are found in a variety of work environments and equipment types, and are integral to workplace safety. RS Components supplies quality pressure relief valves from leading brands, to support your application.

Hot Water Systems

As water can expand at 3% of its volume, depending on how much it is heated from room temperature, pressure relief valves are common in hot water systems and boilers, both in domestic and commercial installations. To ensure your hot water flow is smooth and uninterrupted, PRVs are needed to relieve unnecessary pressure in central heating systems.

Gas Systems

Pressure regulation is vital wherever gas powered tools and equipment are used. Overpressure is a potentially catastrophic risk when gas cylinders are employed, so you will find some kind of pressure relief valve wherever gas powered systems are installed, from factory floors to beer cellars.

...
Lees meer Lees minder

Filters

1 - 20 van 28 producten worden weergegeven
Resultaten per pagina
Omschrijving Prijs Connection Maximum Set Pressure Maximum Temperature For Use With Exhaust Port Size Lockable Body Material Connection Gender Thread Size Thread Standard or Connection Type
RS-stocknr. 211-0430
FabrikantnummerPREL101903
16,94 €
Each
Aantal stuks
1/2 in BSP Female 3bar +140°C Hot Water BSP 1/2 - Brass Female 1/2in BSP
RS-stocknr. 794-8448
FabrikantnummerPTEM550951
59,80 €
Each
Aantal stuks
1/2 in BSP Male 7bar +95°C Hot Water - - - Male 1/4in BSP
RS-stocknr. 389-1483
FabrikantnummerN-542-020 4 BAR
158,68 €
Each
Aantal stuks
3/4 in BSP Female 4bar +195°C Air, Hot Water, Steam BSP 3/4 Yes Bronze Female 3/4in BSP
RS-stocknr. 777-0349
FabrikantnummerCA-RS/311460
FabrikantAltecnic
14,80 €
Each
Aantal stuks
1/2 in G Female 6bar +110°C Hot Water G 1/2 - Brass Female 1/2in G
RS-stocknr. 777-0352
Fabrikantnummer313430
FabrikantAltecnic
23,48 €
Each
Aantal stuks
1/2 in G Male 3bar +110°C Hot Water G 1/2 - Brass Male 1/2in G
RS-stocknr. 799-8850
Fabrikantnummer482855
FabrikantValsteam ADCA
237,93 €
Each
Aantal stuks
1/2 in BSP 4bar +350°C Steam BSP 3/4 - Stainless Steel - 1/2in BSP
RS-stocknr. 794-8423
FabrikantnummerPTEM550753
54,98 €
Each
Aantal stuks
1/2 in BSP Male 10bar +95°C Hot Water - - - Male 1/4in BSP
RS-stocknr. 389-1449
FabrikantnummerN-542-015 4 BAR
138,23 €
Each
Aantal stuks
1/2 in BSP Female 4bar +195°C Air, Hot Water, Steam BSP 1/2 Yes Bronze Female 1/2in BSP
RS-stocknr. 389-1506
FabrikantnummerN-542-025 5 BAR
209,73 €
Each
Aantal stuks
1 in BSP Female 5bar +195°C Air, Hot Water, Steam BSP 1 Yes Bronze Female 1in BSP
RS-stocknr. 794-8441
FabrikantnummerPTEM550756
54,98 €
Each
Aantal stuks
1/2 in BSP Male 4.5bar +95°C Hot Water - - - Male 1/4in BSP
RS-stocknr. 211-0446
FabrikantnummerPREL101913
23,22 €
Each
Aantal stuks
3/4 in BSP Female 3bar +140°C Hot Water BSP 3/4 - Brass Female 3/4in BSP
RS-stocknr. 799-8875
Fabrikantnummer482859
FabrikantValsteam ADCA
266,21 €
Each
Aantal stuks
1 in BSP 2.5bar +350°C Steam BSP 1 - Stainless Steel - 1in BSP
RS-stocknr. 389-0610
FabrikantnummerN-542-025 3 BAR
220,20 €
Each
Aantal stuks
1 in BSP Female 3bar +195°C Air, Hot Water, Steam BSP 1 Yes Bronze Female 1in BSP
RS-stocknr. 799-8866
Fabrikantnummer482858
FabrikantValsteam ADCA
253,53 €
Each
Aantal stuks
3/4 in BSP 4bar +350°C Steam BSP 1 - Stainless Steel - 3/4in BSP
RS-stocknr. 794-8316
FabrikantnummerADMT503001
29,85 €
Each
Aantal stuks
1/2 in BSP Male 16bar +99°C Hot Water - - Brass Male 1/2in BSP
RS-stocknr. 794-8344
FabrikantnummerDIFF200005
26,22 €
Each
Aantal stuks
22 mm Metric 10bar +110°C Hot Water 22mm - Brass Female 22mm -
RS-stocknr. 794-8439
FabrikantnummerPTEM550759
68,64 €
Each
Aantal stuks
15 mm Compression 7bar +95°C Hot Water - - - Male 15in -
RS-stocknr. 246-3289
FabrikantRS PRO
59,88 €
Each
Aantal stuks
22 mm Compression 3bar +110°C Heating Systems up to 6 bar static pressure BSP 3/4 Yes Brass Female 3/4in Compression
RS-stocknr. 389-1461
FabrikantnummerN-542-020 3 BAR
158,68 €
Each
Aantal stuks
3/4 in BSP Female 3bar +195°C Air, Hot Water, Steam BSP 3/4 Yes Bronze Female 3/4in BSP
RS-stocknr. 389-0604
FabrikantnummerN-542-020 2.5 BAR
158,68 €
Each
Aantal stuks
3/4 in BSP Female 2.5bar +195°C Air, Hot Water, Steam BSP 3/4 Yes Bronze Female 3/4in BSP
Related Products
For heating, sanitary and compressed air systems, pumps ...
Description:
For heating, sanitary and compressed air systems, pumps and autoclavesBody in hot forged DZR brassThreading to BS2779Hostaform inner valveSpring in 18//8 AISI 302-304 stainless steelHydrostatic test pressures 30 bar/435psi (shell), 22 bar/315psi (seat)Compact design, allows flow in one direction only, ...
A combined sight glass and check valve used ...
Description:
A combined sight glass and check valve used to visually check the condition and leakage of steam traps. It can be installed horizontally or vertically (bottom to top), downstream of the steam trap. it is constructed with a bronze body, ...
Single check valve protects against the risk of ...
Description:
Single check valve protects against the risk of back flow and back syphonage contaminationsCompact lightweight construction for easy installationMinimum pressure drop giving good flow ratesIdeal for all Class 2 contamination risks as per Water Supply (water fittings) Regulations 1999Available with ...
Festo VZXF series tough and durable angle seat ...
Description:
Festo VZXF series tough and durable angle seat valves for process automation applications. Perfect for all tasks involving the control of media flows, whether contaminated or highly viscous. The VZXF controls gaseous or fluid material flows in both closed and ...