NABIC 542 Safety Relief Valve

**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.

Product Specification

Sizes Available: 3/8”, 1/2”, 3/4”, 1”, 1.1/4”, 1.1/2”, 2”
Connections: Screwed BSPP or NPT
Materials: Inlet Nozzle - Stainless Steel / Body & Bonnet - Stainless Steel (1.2)
Disk Options: Metal, Viton, Nylon, PEEK, or Vespel
Joints & Seals: NBR, FPM, EPDM (varies by model)
Head Type: C (Gas Tight Cap)
Suitable Medium: Steam, Gases, and Liquids
Set Pressure Range: 0.05 to 500 Barg (dependent upon size - multiple springs available)
Temperature Range: -60 to 280 degrees Celsius
Notes: The specified temperature range applies to valves featuring a metal disk.

Explore our premium range of stainless steel valves, engineered for durability and reliability. Designed to cater to various applications involving steam, gases, and liquids, our valves ensure optimal performance with a set pressure range from 0.05 to 500 Barg. With extensive material options and connection types, our valves are perfect for any operational needs. Don’t compromise on quality—choose our valves for robust engineering and exceptional adaptability.

### Resideo Three-Port Mixing Valve (XF) Description The Resideo Three-Port Mixing Valve (XF), also known as the Centra Linear Valve, is designed for the modulating control of hot or chilled water, as well as steam, within heating, ventilation, and air conditioning (HVAC) systems. These valves can be seamlessly operated using linear actuators from the ML64 and ML74 series, ensuring optimal performance and efficiency. #### Special Features - **Robust Construction**: Made from cast iron with flanged end connections for durability and secure installation. - **Minimal Leakage**: Features a low seat leakage rate, promoting system efficiency and reliability. - **Durable Design**: Metal-to-metal seating ensures a long operational lifespan. - **Self-Adjusting Packing**: This feature maintains performance over time, reducing the need for maintenance. - **Precision Control**: Accurate positioning guarantees advanced temperature control, improving overall system performance. - **Easy Installation of Actuators**: Designed for hassle-free mounting of direct-coupled electric actuators. - **Consistent Flow**: Provides a constant total flow throughout the full plug travel, optimising system functionality. - **Quality Materials**: The stem is crafted from stainless steel, while the valve body is made of cast iron (GG25), with flanged connections conforming to ISO 7005-2 standards. #### Available Part Numbers: - XF15A2.5, XF15A4.0, XF15B2.5, XF15B4.0, XF15D2.5, XF15D4.0 - XF20A6.3, XF20B6.3, XF20D6.3 - XF25A10, XF25B10, XF25D10 - XF32A16, XF32B16, XF32D16 - XF40A25, XF40B25, XF40D25 - XF50A40, XF50B40, XF50D40 - XF65A63, XF65B63, XF65D63 - XF80A100, XF80B100, XF80D100 - XF100A140, XF100B160, XF100B160RA, XF100D160 - XF125A220, XF125B250, XF125B250RA - XF150A310, XF150B360, XF15B360RA For precision temperature control and efficient modulation in your HVAC systems, choose the Resideo Three-Port Mixing Valve (XF) – a dependable solution for any heating or cooling requirement.