Bailey 707VD Safety Relief Valve Female x Female (AFLAS disk with Dome Top – Suitable for Gas Service)

**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.

Features & Benefits: Durable ductile iron body with integrated notch plate, anti-blowout stem for safe operation, fully bonded epoxy coating for Level 3 C3 corrosion protection, and maintenance-free design to minimise downtime.

Specification: Complies with BS EN 593; face-to-face to BS EN 558; DN250+ valves include fully enclosed gear operator; suitable for flow regulation and gas applications; Fig. 970/970G approved for Group 1 & 2 gases and liquids per PED 2014/68/EU.

Pressure/Temperature Rating: PN16, -10 to 130°C.

The PREL106004 Potable Water Pressure Relief Valve is engineered to discharge water from the system when cold water exceeds a set pressure, ensuring the safe operation of unvented cylinders. The Reliance Valves 102 Series Potable Water Pressure Relief Valves are specifically designed to safeguard unvented systems from over pressurisation. These valves come pre-set and locked to a designated pressure; if the system surpasses this pressure, the valve will lift off its seat, allowing water to discharge safely into the waste system. This is the primary safety device in any unvented system. The pressure relief valves feature a robust single-piece cartridge design and are available in various pressure settings and multiple connection sizes, providing flexibility in installation.

Features and Benefits:

• Quick removal of the single-piece cartridge for easy cleaning or replacement
• Diaphragm design enhances resistance against scale build-up
• Protects against over pressurisation, ensuring system safety
• Multiple connection options for versatile installation
• Configured to relieve pressure starting from 7.5 bar
• Designed exclusively for use with cold water

Specifications:

• Size: 1/2" x 1/2"
• Connections: BSP Male Inlet x BSP Female Outlet
• Materials: Hot pressed DZR Brass
• Medium: Water
• Set Pressure: 7.5 Barg
• Temperature: Up to +140°C
• Product Code: PREL106004
• Notes: WRAS approved

This Potable Water Pressure Relief Valve is an essential component for protecting your unvented system, ensuring reliable performance and safety. Equip your system with the PREL106004 valve today.