Stainless Steel Expansion Vessel for Potable Water Applications

The Reliance Valves Aquasystem Replaceable Membrane Potable Water Expansion Vessels are expertly designed to accommodate the increased load within water systems as water is heated and expands. These expansion vessels play a crucial role in maintaining safe operating levels, preventing excessive pressure build-up in both sealed heating and cold water systems. Each vessel features a replaceable membrane that safeguards against corrosion and contamination, ensuring that the water remains safe for human consumption. The inclusion of a replaceable membrane also facilitates easy servicing of the vessel without requiring removal, allowing for quick maintenance in situ.

Features and Benefits:

• Stainless Steel Bolted Flange: Resists corrosion for enhanced durability.
• Extra Wide Membrane Opening: Reduces noise caused by restricted flow for a quieter operation.
• Internal Membrane Protection: Ensures no contact between water and the steel shell, preventing internal corrosion.
• Comprehensive Size Range: Available in sizes from 2 to 5000 litres, catering to all applications.
• Easy Servicing: All models are supplied with a replaceable membrane for convenient maintenance without removal.
• Pre-Charge Valve: Allows for simple air pressure adjustments.
• Suitable for Hot and Cold Water: Designed specifically for these applications.

Specifications

• Capacity: 100 Litres
• Colour: Blue
• Pre-Set Pressure: 3.5 Bar
• Maximum Pressure: 10.0 Bar
• Minimum Temperature: -10°C
• Maximum Temperature: 99°C
• Height: 849 mm
• Diameter: 495 mm
• Water Connection: 1" MBSP
• Product Code: XVES050110

Materials

• Shell: Epoxy Coated Steel
• Membrane: EPDM
• Bolted Flange: Stainless Steel

Standards and Approvals

• WRAS Approved for vessels up to 1000 litres
• CE Marked in accordance with Directive PED 97/23/CE
• TUV Certified
• Materials for 1000 - 5000 litre models comply with BS 6920

For a reliable and efficient solution to manage pressure in your potable water systems, choose the Reliance Valves Aquasystem Replaceable Membrane Potable Water Expansion Vessels.

Product Specifications

Sizes Available: 1/2" x 1", 3/4" x 1", 1" x 1" Connections: Female NPT x Female NPT (1/2" features a Male inlet) Materials: - Body: 316L Stainless Steel - Disk: PTFE or PEEK - Joints & Seals: Optimised for medium gases Set Pressure Range: - 0.5 to 450 Barg (8mm Orifice) - 0.5 to 380 Barg (10mm Orifice) Temperature Range: -45 to +200 degrees Celsius Design Approvals: PED Compliant Ensure optimal performance and reliability with our high-quality products, suited for a range of industrial applications. Experience durability with our 316L body and specialised disk materials, designed to handle various gases efficiently. Perfect for maintaining safety and compliance in rigorous environments, our product is the ideal choice for your operational needs.

The PREL104005 High Capacity Potable Water Pressure Relief Valve is designed to effectively discharge water from the system when the cold water pressure exceeds the set limit, safeguarding unvented cylinders from over pressurisation. Ideal for high flow and larger capacity systems, the Reliance Valves 104 Series High Capacity Potable Water Pressure Relief Valve provides robust protection against pressure surges. Pre-set and locked to a specific pressure, this valve will lift from its seat and allow water to escape into the waste when the system pressure surpasses the threshold. The outlet connection is sized larger than the inlet to ensure the valve can manage high-capacity discharges efficiently, making it the first line of defence in unvented systems. Available in a variety of pressure settings ranging from 3.5 to 8 bar, as well as multiple connection sizes, this valve offers flexibility for installation.

**Features and Benefits:**

• High flow design suited for larger capacity systems
• Quick-release single-piece cartridge for easy cleaning or replacement
• Diaphragm design enhances resistance to scale
• Safeguards against over pressurisation effectively
• Multiple connections facilitate flexible installation
• Adjustable relief pressure range from 3.5 to 8.0 bar
• Designed for cold water use only

**Specifications:**

• Size: 1¼" x 1½"
• Connections: BSP Female Inlet x BSP Female Outlet
• Materials: Hot pressed DZR Brass
• Medium: Cold water
• Set Pressure: 6 Barg
• Temperature: +140°C
• Product Code: PREL104005

Protect your unvented water system with the reliability and performance of the PREL104005 High Capacity Potable Water Pressure Relief Valve.