Letter of Conformity

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.

**Stainless Steel Expansion Vessel for Potable Water Applications** Introducing the Reliance Valves Aquasystem Replaceable Membrane Potable Water Expansion Vessel, expertly designed for use in potable water systems. This high-quality stainless steel vessel effectively manages the additional load created when water heats and expands, ensuring optimal performance and safety within both heating and cold-water systems. By preventing excessive pressure build-up, our expansion vessels safeguard your system’s integrity and longevity. Equipped with a replaceable membrane, this expansion vessel prevents water from coming into contact with the metal shell, thereby eliminating the risk of corrosion and contamination. This feature guarantees that the water remains safe for human consumption. Furthermore, the replaceable membrane allows for straightforward servicing without the need to remove the vessel, enabling quick and efficient on-site maintenance. **Features and Benefits:** - **Corrosion-Resistant Design:** The stainless steel bolted flange enhances durability and prevents corrosion. - **Reduced Noise Levels:** The extra-wide membrane opening significantly minimizes noise caused by restricted flow. - **Internal Protection:** The internal membrane prevents any contact between water and the steel shell, effectively stopping internal corrosion. - **Extensive Capacity Range:** Available in sizes from 2 to 5000 litres to accommodate all application requirements. - **Service-Friendly:** All models come with a replaceable membrane for convenient servicing without removal. - **Pre-Charge Valve:** Allows for easy topping up of air pressure. - **Hot and Cold Water Compatibility:** Suitable for use with hot and cold water only. **Specifications:** - **Capacity:** 750 Litres - **Colour:** Red - **Pre-Set Pressure (Bar):** 4 - **Max Pressure (Bar):** 10.0 - **Minimum Temperature:** -10°C - **Maximum Temperature:** 99°C - **Height:** 1820mm - **Diameter:** 800mm - **Water Connection:** 2" MBSP - **Product Code:** XVES050160 **Materials:** - **Shell:** Epoxy Coated Steel - **Membrane:** EPDM - **Bolted Flange:** Stainless Steel **Standards and Approvals:** - WRAS approved for up to 1000 litres - CE marked in accordance with Directive PED 97/23/CE - TUV Certified - All models from 1000 to 5000 litres comply with BS 6920 Ensure the reliability and safety of your water system with our high-performance stainless steel expansion vessel. Perfect for both commercial and domestic applications, it's an essential component for maintaining stable water pressure and quality.

Features & Benefits

• Constructed from robust ductile iron for enhanced durability and long service life
• Comes with stainless steel discs as standard for improved corrosion resistance
• Designed to perform efficiently within a wide temperature range of -10°C to 120°C
• Fully lugged design ensures secure and stable installation
• Pressure rating of PN25 for reliable performance
• Available with lever and gearbox operator options for versatile operation

Specifications

• Medium: Group 2 Liquids
• Flanges: Fully lugged in accordance with BS EN1092-2
• Face to Face: Complies with BS EN558 standards
• Design Standard: BS EN593: 2009
• Test and Inspection Standard: BS EN12266-1
• Mounting Flange: ISO5211-2001 compatible

Pressure/Temperature Rating

Capable of handling pressures up to 25 bar across a temperature range of -10°C to 120°C

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