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.

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Nombre de résultats par page
Description Prix Connection Maximum Set Pressure Maximum Temperature For Use With Exhaust Port Size Lockable Body Material Connection Gender Thread Size Thread Standard or Connection Type
N° de stock RS 246-3289
MarqueRS PRO
59,52 €
Each
Unité
22 mm Compression 3bar +110°C Heating Systems up to 6 bar static pressure BSP 3/4 Yes Brass Female 3/4in Compression
N° de stock RS 211-0430
Référence fabricantPREL101903
16,94 €
Each
Unité
1/2 in BSP Female 3bar +140°C Hot Water BSP 1/2 - Brass Female 1/2in BSP
N° de stock RS 389-1483
Référence fabricantN-542-020 4 BAR
174,55 €
Each
Unité
3/4 in BSP Female 4bar +195°C Air, Hot Water, Steam BSP 3/4 Yes Bronze Female 3/4in BSP
N° de stock RS 794-8448
Référence fabricantPTEM550951
59,80 €
Each
Unité
1/2 in BSP Male 7bar +95°C Hot Water - - - Male 1/4in BSP
N° de stock RS 799-8850
Référence fabricant482855
220,17 €
Each
Unité
1/2 in BSP 4bar +350°C Steam BSP 3/4 - Stainless Steel - 1/2in BSP
N° de stock RS 777-0352
Référence fabricant313430
MarqueAltecnic
23,48 €
Each
Unité
1/2 in G Male 3bar +110°C Hot Water G 1/2 - Brass Male 1/2in G
N° de stock RS 777-0349
Référence fabricantCA-RS/311460
MarqueAltecnic
14,80 €
Each
Unité
1/2 in G Female 6bar +110°C Hot Water G 1/2 - Brass Female 1/2in G
N° de stock RS 389-1506
Référence fabricantN-542-025 5 BAR
230,70 €
Each
Unité
1 in BSP Female 5bar +195°C Air, Hot Water, Steam BSP 1 Yes Bronze Female 1in BSP
N° de stock RS 794-8423
Référence fabricantPTEM550753
54,98 €
Each
Unité
1/2 in BSP Male 10bar +95°C Hot Water - - - Male 1/4in BSP
N° de stock RS 389-1449
Référence fabricantN-542-015 4 BAR
152,05 €
Each
Unité
1/2 in BSP Female 4bar +195°C Air, Hot Water, Steam BSP 1/2 Yes Bronze Female 1/2in BSP
N° de stock RS 799-8866
Référence fabricant482858
248,21 €
Each
Unité
3/4 in BSP 4bar +350°C Steam BSP 1 - Stainless Steel - 3/4in BSP
N° de stock RS 211-0446
Référence fabricantPREL101913
23,22 €
Each
Unité
3/4 in BSP Female 3bar +140°C Hot Water BSP 3/4 - Brass Female 3/4in BSP
N° de stock RS 389-0610
Référence fabricantN-542-025 3 BAR
237,64 €
Each
Unité
1 in BSP Female 3bar +195°C Air, Hot Water, Steam BSP 1 Yes Bronze Female 1in BSP
N° de stock RS 794-8316
Référence fabricantADMT503001
29,85 €
Each
Unité
1/2 in BSP Male 16bar +99°C Hot Water - - Brass Male 1/2in BSP
N° de stock RS 794-8441
Référence fabricantPTEM550756
54,98 €
Each
Unité
1/2 in BSP Male 4.5bar +95°C Hot Water - - - Male 1/4in BSP
N° de stock RS 799-8875
Référence fabricant482859
248,21 €
Each
Unité
1 in BSP 2.5bar +350°C Steam BSP 1 - Stainless Steel - 1in BSP
N° de stock RS 389-0604
Référence fabricantN-542-020 2.5 BAR
174,55 €
Each
Unité
3/4 in BSP Female 2.5bar +195°C Air, Hot Water, Steam BSP 3/4 Yes Bronze Female 3/4in BSP
N° de stock RS 178-0050
Référence fabricant2252550
MarqueWatts
11,55 €
Each
Unité
- - - - - - - - - -
N° de stock RS 794-8439
Référence fabricantPTEM550759
68,64 €
Each
Unité
15 mm Compression 7bar +95°C Hot Water - - - Male 15in -
N° de stock RS 799-8878
Référence fabricant482860
248,21 €
Each
Unité
1 in BSP 3bar +350°C Steam BSP 1 - Stainless Steel - 1in BSP