Auld Surplus Valve

**Stainless Steel Expansion Vessel for Potable Water Applications** Introducing the Reliance Valves Aquasystem Replaceable Membrane Potable Water Expansion Vessels, expertly designed to accommodate the additional pressure generated within water systems as the temperature rises and volume expands. These high-quality expansion vessels play an essential role in maintaining safe operating levels by preventing pressure build-up in both sealed heating and cold water systems. Equipped with a replaceable membrane, these vessels safeguard against corrosion and contamination, ensuring that the water remains safe for human consumption. The innovative design allows for easy servicing; the vessel can be maintained without removal, providing a hassle-free solution for quick in situ servicing. **Features and Benefits:** - **Corrosion Resistance:** The stainless steel bolted flange enhances durability and prevents corrosion. - **Noise Reduction:** The extra wide membrane opening minimises noise resulting from restricted water flow. - **Protection Against Corrosion:** The internal membrane ensures no contact between water and the steel shell, effectively preventing internal corrosion. - **Versatile Range:** Available capacities range from 2 to 5000 litres, catering to a variety of applications. - **Easy Maintenance:** All models are supplied with a replaceable membrane, allowing for simplified servicing. - **Convenient Pre-charge Valve:** Easily top up air pressure with the built-in pre-charge valve. - **Hot and Cold Water Compatibility:** Suitable for use with hot and cold water only. **Specifications:** - **Capacity:** 2 Litres - **Colour:** White - **Pre-set Pressure (Bar):** 3.0 - **Maximum Pressure (Bar):** 10.0 - **Minimum Temperature:** -10°C - **Maximum Temperature:** 99°C - **Height:** 250mm - **Diameter:** 120mm - **Water Connection:** 1/2" MBSP - **Product Code:** XVES050010 **Materials:** - **Shell:** Epoxy Coated - **Membrane:** EPDM - **Bolted Flange:** Stainless Steel **Standards and Approvals:** - WRAS approved for capacities up to 1000 litres - CE marked in accordance with Directive PED 97/23/CE - TUV Certified - Compliance with BS 6920 for models ranging from 1000 to 5000 litres. Invest in the Reliance Valves Aquasystem Replaceable Membrane Potable Water Expansion Vessels for reliable performance and peace of mind knowing your water supply is safe and efficiently managed.

## Features & Benefits • Pressure Reducing Valves (PRVs) provide precise control of pressure from boosted hot and cold water supplies, tailored to meet site specifications. • Supplied with male union tailpieces for straightforward installation, significantly reducing on-site time. • Equipped with an integral strainer that prevents debris from compromising valve performance. • We recommend installing isolation valves both upstream and downstream of the valve to facilitate easy strainer cleaning. • Performance conforms to the BS EN 1567 standard, ensuring high-quality assurance. • Convenient access for measuring outlet pressure. • A separate pressure gauge can be ordered to monitor outlet pressure for each installed valve. • WRAS Approved for drinking water applications, rated up to 80°C. ## Specification • **Medium:** Water Only • **Connections:** Male union tapered tailpieces compliant with BS EN 10226-1 • **Outlet Pressure Range:** 1-6 bar • **Pre-set Outlet Pressure:** 3 bar • **Design Standard:** BS EN 1567 • **Approvals:** WRAS / PED 2014/68/EU • **Mesh Size:** 0.5mm across all sizes ## Pressure/Temperature Rating For optimised performance and reliability in your water supply systems, choose our WRAS-approved Pressure Reducing Valves, designed to enhance water management while ensuring compliance with UK standards.

**PREL107020 Potable Water Pressure Relief Valve** The PREL107020 Potable Water Pressure Relief Valve is specifically engineered to safeguard unvented cylinders from cold water over-pressurisation. Part of the Reliance Valves 107 Series, this pressure relief valve effectively discharges water from the system when a designated pressure threshold is exceeded, ensuring optimal safety and performance. The valves come pre-set and securely locked to a specific pressure; should the system experience over-pressurisation, the valve will lift from its seat, allowing excess water to flow to waste. This valve acts as the primary safety device within any unvented system. Available in pressure settings ranging from 3.5 to 6 bar, the PREL107020 also features various connection sizes, providing flexibility for installation. **Features and Benefits:** - **Diaphragm Design:** Enhanced resistance to scale build-up. - **Over-Pressurisation Protection:** Ensures your system operates safely, preventing potential damage. - **Multiple Connection Options:** Allows for versatile installation to suit different setups. - **Set Relief Pressure Range:** 3.5 - 6.0 bar, accommodating various system requirements. - **Cold Water Use Only:** Specifically designed for cold water systems, ensuring efficiency and safety. **Specifications:** - **Size:** 1/2" x 15mm - **Connections:** BSP Male Inlet x Compression Outlet - **Materials:** Hot Pressed DZR Brass - **Medium:** Water - **Set Pressure:** 3.5 Barg - **Temperature Rating:** Up to +110°C - **Product Code:** PREL107020 - **Notes:** WRAS approved Enhance the reliability and safety of your unvented water systems with the PREL107020 Potable Water Pressure Relief Valve – the essential component for effective pressure management.