**PREL104013 High Capacity Potable Water Pressure Relief Valve** The PREL104013 High Capacity Potable Water Pressure Relief Valve is engineered to release water from the system at a predetermined pressure, effectively managing cold water over-pressurisation in unvented cylinders. Designed for high flow rates, this valve is particularly suitable for larger capacity systems. The Reliance Valves 104 Series provides reliable protection for unvented systems against over-pressurisation. Each valve is pre-set and securely locked to a specific pressure—if the system pressure surpasses this limit, the valve will lift from the seat, allowing water to discharge safely to waste. The valve's outlet connection is sized one inch larger than the inlet, ensuring optimal flow capacity during high discharge demands. As the primary safety device in an unvented system, these valves offer peace of mind and robust performance. Available in various pressure settings from 3.5 to 8 bar, and with multiple connection sizes for ease of installation, the PREL104013 is a versatile solution for any plumbing system. **Features and Benefits:** - **High Flow Design**: Ideal for larger capacity systems. - **Easy Maintenance**: Quick removal of the single-piece cartridge for cleaning or replacement. - **Durable Diaphragm**: Enhanced resistance against scale build-up ensures longevity. - **Over-Pressure Protection**: Guards against potentially damaging over-pressurisation. - **Flexible Installation**: Multiple connection options cater to diverse installation requirements. - **Adjustable Pressure Range**: Set relief pressure from 3.5 to 8.0 bar. - **Cold Water Usage**: Specifically designed for use with cold water. **Specifications:** - **Size**: 1.1/4" x 1.1/2" - **Connections**: BSP Female Inlet x BSP Female Outlet - **Materials**: Hot pressed DZR Brass - **Medium**: Cold Water - **Set Pressure**: 8 Barg - **Temperature Rating**: +140 degrees Celsius - **Product Code**: PREL104013 Ensure your unvented system is protected with the reliable performance of the PREL104013 High Capacity Potable Water Pressure Relief Valve. Perfect for both residential and commercial applications, this valve is essential for maintaining a safe and efficient plumbing system.

**Product Specification** **Sizes Available:** 1/4", 3/8", 1/2" **Connections:** - Tri-Clamp (ASME BPE or DIN 32676) - Male Union (DIN 11851 / 11864-1) - Varivent Flange (DIN 11864-2) - Flanged PN16 or ANSI 150 R/F - Screwed (ISO 228) **Materials Used:** - Stainless Steel 316L or 304 **Disk Options:** - EPDM - PTFE (FDA approved) - AF100 - Viton **Joints & Seals:** - Diaphragm: EPDM, PTFE (FDA approved), AF100, or Viton **Compatible Mediums:** - Steam, Gases, and Liquids **Set Pressure Range:** - 0.004 to 0.98 Barg **Cv Range:** - [Insert specific range here if applicable] **Temperature Range:** - [Insert temperature range here if applicable] **Certifications and Approvals:** - [Insert specific approvals here if applicable] **Additional Notes:** - [Insert any pertinent notes or details here] This product is designed for a wide range of applications, ensuring reliability and safety in various industrial settings. Whether you are dealing with steam, gases, or liquids, our valves offer top-notch performance and durability. For further information or specific inquiries, please contact us. Optimised for quality, our products are compliant with industry standards and will meet your operational needs seamlessly.

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.