Reliance RWC 104 Series Pressure Relief Valve 1.1/2" x 2" F x F 6 Bar - PREL104012
The PREL104012 High Capacity Potable Water Pressure Relief Valve discharges water off the system at a set pressure in the event of cold water over pressurisation to an unvented cylinder (high flow for larger capacity systems) Reliance Valves 104 Series High Capacity Potable Water Pressure Relief Valve is a high capacity range of pressure relief valves designed to protect an unvented system from over pressurisation. The valves are pre-set and locked to a particular pressure, and if the system exceeds this pressure the valve will lift off the seat and water will discharge from the valve to the waste. The outlet connection is one size larger than the inlet to guarantee the valve will be able to cope with a high capacity discharge. This is the first safety device in line within an unvented system. The valves are available in different pressures ranging from 3.5 - 8 bar, as well as multiple connection sizes to allow for flexible installation.
Features and benefits:
- High flow design for larger capacity systems
- Rapid removal of single piece cartridge for cleaning or replacement
- Diaphragm design gives improved resistance against scale
- Protects against over pressurisation
- Multiple connections for flexible installation
- Set relief pressure range from 3.5-8.0 bar
- Suitable for cold water use only
Specification
Size: 1.1/2" x 2"Connections: BSP Female Inlet x BSP Female OutletMaterials: Hot pressed DZR BrassMedium: Cold waterSet Pressure: 6 BargTemperature: +140 degCProduct Code: PREL104012
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Refrigeration Constant Pressure Valves with Check Valve Function
Our product is designed to enhance the pressure on the discharge side of high-capacity compressor units during the startup phase, ensuring optimal operation. It remains closed until complete oil circulation is established, effectively preventing the refrigerant from condensing in the event of a compressor shutdown.
Product Specifications
Sizes: 1.1/2" to 6"
Connections: Flanged & Butt Weld
Materials: Steel or Stainless Steel
Medium: Glycol-based cold brine refrigerants EN 378 p. 1, such as NH3, R134a, R290 (propane), R507, and blends with refrigerant oil, suitable for neutral gases and liquids.
Set Pressure: 1 - 9 Barg
Temperature Range: -20 to +150 °C
Max Design Notes:
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Specifications
Sizes: 1/2", 3/4", 1”
Connections: Screwed BSP (NPT available on request)
Materials: Stainless Steel (1.4418 or 316)
Disk: Metal with Viton (other materials available upon request)
Joints & Seals: Suitable for a range of mediums including water, air, steam, and other neutral liquids, gases, and vapours.
Set Pressure: 0.5 to 500 Barg (varies based on size)
Temperature Range: -196 to +300 °C
Design Compliance: PED, ATEX, GOST, RINA
Notes: Optional extras include a closed lifting device.
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Flowstar (UK) Ltd
Wiltshire Road, Kingston-upon-Hull, East Riding of Yorkshire, HU4 6PA, United Kingdom
Flowstar (UK) Ltd is a leading global supplier of safety, relief, and reducing valves. With strong partnerships across major manufacturers, we deliver precise, reliable valve solutions tailored to your needs. Email enquiries to sales@flowstar.co.uk or call us on +44 (0)1482 601030.