Reliance RWC 102 Series Pressure Relief Valve 1/2" x 1/2" M x F 6 Bar - PREL102042
The PREL102042 Potable Water Pressure Relief Valve is essential for managing cold water overpressurisation in unvented cylinders. Part of the Reliance Valves 102 Series, these Potable Water Pressure Relief Valves are specifically designed to protect unvented systems from excessive pressure. Each valve is pre-set and locked to a designated pressure; should the system exceed this pressure, the valve will effortlessly lift off its seat, allowing water to discharge safely into the waste system. Serving as the first line of defence in unvented installations, these valves are engineered with a single-piece cartridge for reliability and ease of maintenance. They are available in various pressure settings from 3.5 to 8 bar and come with multiple connection sizes to facilitate versatile installations.
Features and Benefits:
- Easy and quick removal of the single-piece cartridge for cleaning or replacement
- Advanced diaphragm design enhances resistance to scale build-up
- Effectively protects against overpressurisation issues
- Multiple connection options offer flexible installation configurations
- Customisable relief pressure range from 3.5 to 8.0 bar
- Designed exclusively for cold water applications
Specifications:
- Size: 1/2" x 1/2"
- Connections: BSP Male Inlet x BSP Female Outlet
- Materials: Hot pressed DZR Brass
- Medium: Water
- Set Pressure: 6 Barg
- Temperature: +140°C
- Product Code: PREL102042
- Notes: WRAS approved
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Features:
316L stainless steel diaphragm prevents inboard diffusion
CAPSULE® seat design with 360° integral filtration in both stages
Helium leak-tested for integrity
Specifications:
Max inlet pressure: 3000 PSIG (210 BAR); optional 4500 PSIG (310 BAR)
Body: 316L stainless steel barstock; Bonnet: Chrome-plated die-cast zinc
Gauges: 2" (50 mm) stainless steel plated case
Seats: PCTFE (first stage), PTFE (second stage)
Filter: Patented 10-micron 316 stainless steel mesh
Temperature range: -40°F to 140°F (-40°C to 60°C)
Diaphragm: 316L stainless steel; Cv: 0.1
Helium leak integrity: 1 × 10⁻⁸ scc/sec
Internal seals: PTFE; Ports: 1/4" FNPT
Compliance: Meets/exceeds CGA G-4.1, ANSI/ASME B40.1, PED 2014/68/EU, CRN OH5216
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.