Reliance RWC 107 Series Pressure Relief Valve 1/2" x 1/2" F x F 6 Bar - PREL107010

The Fig. 970W and 970WG valves feature a robust ductile iron body with integrated notch plate, anti-blowout stem, and fully bonded epoxy coating for Level 3 C3 corrosion protection. WRAS approved for potable water (-10 to 80°C), they are maintenance-free, suitable for flow regulation and gas applications, and DN250+ valves include a gear operator. Compliant with BS EN 593/558 and approved for Group 1 & 2 gases and liquids (PED 2014/68/EU). Rated PN16, -10 to 80°C (WRAS) or -10 to 100°C (Non-WRAS).

The FSY90N Nano Scored Rupture Disc is a reverse-acting, micro-scored compression disc designed for high reliability and precision pressure relief. Its convex shape remains stable under operating pressure and only inverts at the set reverse pressure. Capable of operating at up to 95% of its burst pressure, the disc withstands thousands of pressure cycles without loss of performance. When activation occurs, it opens fully within milliseconds along the scored pattern, producing no fragments.

FSY90N discs are less affected by temperature fluctuations than conventional rupture discs, making them ideal for processes with wide temperature variations. They are suitable for gas and liquid applications (with a gas cushion where required) and are commonly used to protect pressure relief valves. A broad selection of materials and thicknesses provides excellent corrosion resistance, with optional PTFE lining available for enhanced chemical protection. Vacuum support is not required.

Key Specifications:

• Sizes: 1" (DN25) to 8" (DN200)

• Materials: Stainless steel, Alloy 201, 400, 600, C276, Titanium

• Burst Pressure Range: 0.2–70 bar g (depending on size and material)

• Tolerance: ±5% to ±20%

• Operating Margin: 90% standard, up to 95% in suitable conditions

• Temperature Range: -196°C to 600°C

• Fragmentation: None – clean, full opening

• Use Under Valve: Yes

• Corrosion Resistance: Very good

• Linings: Optional

• Holders: FSHR/A, FSHR/P, FSHR/F, FSHTC

• Rupture Detection: Electrical, magnetic, inductive, optical

• Certifications: ASME (UD Stamp), PED (CE), ATEX EX II 2 GD

**Features & Benefits of Double Check Valves** - Double check valves are essential for preventing backflow and back siphonage contamination in domestic homes, public spaces, and commercial buildings. - WRAS approved for use with wholesome (potable) water, with a maximum temperature rating of 85°C. - The compression model is designed with ends that comply with BS EN 1252-2 and is suitable for use with BS EN 1057 R250 (half-hard) copper tubing or female taper threads that meet BS EN 10226-2 standards. - The shell pressure rating for Fig. 250W and Fig. 250CW is PN16, ensuring a maximum inlet/working pressure of 10 bar. - Fully compliant with BS EN 13959 standards for ‘Anti-pollution check valves’, family E type D. **Specification** **Pressure/Temperature Rating** - Shell Pressure: PN16 - Maximum Temperature: 85°C - WRAS approved for use up to 85°C Optimise the health and safety of your water systems with our reliable double check valves that meet stringent UK standards and regulations.