Hattersley Fig 810 PN16 Strainer

The Altecnic / Caleffi Relief Valve - Nut Inlet - A311501CST is designed for use in domestic hot water systems, providing essential protection for hot water cylinders and heating systems, including boilers and associated components. This relief valve is carefully selected based on the required set pressure to ensure optimum performance. As pressure rises within the system, the valve opens when the discharge pressure threshold is met, releasing excess pressure into the atmosphere. This critical function helps prevent hazardous pressure levels that could endanger the boiler, hot water storage cylinder, and personnel in the surrounding area.

**Specifications**

**Size:** 3/4" x 1/2" **Connections:** Loose Nut Connection Inlet x BSP Female Outlet **Materials:** Brass **Medium:** Air and Water **Set Pressure:** 6 Barg **Temperature Range:** +5 to +110 °C **Product Code:** A311501CST **Notes:** Compatible with 533002 CST and 533003 CST Inlet Control Groups, MK2 Caleffi Multibloc, and Range Tribune HE (Caleffi Control Gear) cylinders.

Optimise your heating system's safety by choosing the Altecnic / Caleffi Relief Valve - A311501CST for reliable and efficient performance.

**Product Specification** **Sizes Available:** 1/8", 1/4" **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 to ISO 228 **Materials:** - Stainless Steel 316L or 304 - Disk Options: EPDM, PTFE (FDA Approved), AF100, or Viton - Joints & Seals: Diaphragm materials include EPDM, PTFE (FDA Approved), AF100, or Viton **Suitable Medium:** Steam, Gases, and Liquids **Maximum Inlet Pressure:** 16 Barg **Outlet Pressure Range:** 1 to 7.7 Barg --- Explore our high-quality stainless steel valves, meticulously crafted to meet your industrial needs. Perfect for applications involving steam, gases, and liquids, these valves are designed to ensure reliability and efficiency. With multiple connection options and durable material choices, our valves are the ideal solution for both new installations and retrofitting existing systems. Trust in our engineering expertise to provide the best functionality and performance in any operating environment.

**Product Specification** **Size Options:** 3/8", 1/2", 3/4", 1" **Connections:** Screwed BSPP or NPT **Materials:** - **Nozzle:** Stainless Steel - **Spring Bonnet:** S.G Iron - **Disk:** Metal - **Joints & Seals:** NBR, FPM, EPDM (varies by model) **Head Type:** A (Gas Tight Lever) **Suitable Mediums:** Steam, Gases, and Liquids **Set Pressure Range:** 0.05 to 500 Barg (model dependent) **Temperature Range:** -10 to 280 °C **Additional Information:** We offer various other models (please refer to downloads) featuring alternative O-ring and disc materials, NPT connections, different orifice sizes, and distinct head types. For further assistance or specific inquiries, please do not hesitate to contact us. Optimise your operations with our robust pressure relief valves that cater to a wide range of applications, ensuring safety and efficiency in handling steam, gases, and liquids.