Resideo DRU Three-Way Mixing Valve

The Fig. 970 and 970G valves feature a robust ductile iron body with an integrated notch plate, anti-blowout stem, and fully bonded epoxy coating for Level 3 C3 corrosion protection. Maintenance-free design reduces downtime, while DN250+ valves include a gear operator. Suitable for flow regulation and gas applications, they comply with BS EN 593/558 and are approved for Group 1 & 2 gases and liquids (PED 2014/68/EU). Rated PN16, -10 to 130°C.

The Altecnic / Caleffi 253 Solar Safety Valve - 253046 is designed to regulate pressure within the primary circuits of solar heating systems. This valve is specifically chosen based on the required set pressure. As pressure increases within the system, the valve activates when the discharge pressure is reached, releasing excess pressure to the atmosphere. This vital function helps prevent potential damage to solar collectors and other system components caused by excessive pressure levels.

Specification

• Size: 1/2" x 3/4"
• Connections: BSP Female Inlet x BSP Female Outlet
• Materials: Brass (Chrome Plated)
• Medium: Water, Glycol Solutions (Maximum Glycol Percentage: 50%)
• Set Pressure: 6 Barg
• Temperature Range: -30 to +160 degrees Celsius
• Product Code: 253046
• Notes: CE marked

This reliable safety valve is an essential component for maintaining the efficiency and safety of your solar heating system. Its robust construction and advanced design ensure it meets industry standards, providing peace of mind for your installation.

**Product Specification: High-Performance Pressure Relief Valves** **Sizes Available:** - 1/2" x 1" - 3/4" x 1" - 1" x 1" **Connections:** - Screwed NPT Male Inlet x Screwed NPT Female Outlet - Flanged ANSI 150 Inlet x Flanged ANSI 150 Outlet - Flanged ANSI 300 Inlet x Flanged ANSI 150 Outlet **Body Components:** - **Bonnet:** Crafted from Cast Steel (to ASME SA216 WCB) or Stainless Steel (to ASME SA351 CF8M). - **Nozzle and Seat:** Made of 316 Stainless Steel. **Disk Options:** - Standard: 316 Stainless Steel - Optional: 316 Stainless Steel with a Viton insert for enhanced sealing. **Joints & Seals:** - Standard: Non-asbestos - Optional: PTFE or Graphite seals available for added durability. **Suitable Mediums:** - Gas, Vapour, and Liquids **Set Pressure Range:** - 0.75 to 156.7 Barg - 11 Psig to 2272 Psig **Temperature Range:** - -190°C to +538°C (dependent on material and spring selection) **Design Standards:** - Conforms to API 520 / 527 standards and is type-approved by DNV, BV, and ABS for pressure vessels and LPG/LNG cryogenic applications. **Important Note:** The maximum set pressure for flanged valves is determined by the flange rating, which varies with temperature. --- Optimise your operations with our high-performance pressure relief valves, designed for demanding applications and engineered to meet stringent industry standards. Perfect for managing pressure in various gas and liquid systems, our valves are reliable and built to last.