Hattersley Fig 822 PN16 Strainer

The Altecnic / Caleffi 313 Relief Valve with Gauge (Product Code: 313560) is an essential component for domestic hot water systems and heating setups. Designed to safeguard hot water cylinders and boilers, this valve is tailored to ensure optimal safety by releasing excess pressure. Upon reaching the designated discharge pressure, the valve automatically opens, venting to the atmosphere and preventing hazardous pressure levels that could jeopardise the boiler, hot water storage cylinder, and nearby personnel. This model is supplied complete with a built-in pressure gauge for added convenience and monitoring.

Specifications

• Size: 3/4" x 3/4"
• Connections: BSP Female Inlet x BSP Female Outlet
• Materials: Brass
• Medium Compatibility: Air and Water
• Set Pressure: 6 Barg
• Discharge Flow Rate: 248.81 kg/hr
• Maximum Boiler Rating: 144.6 kW
• Operating Temperature Range: +5 to +110°C
• Product Code: 313560

Additional Information

• WRAS Approved
• CE Marked
• Pressure Gauge Included

Ensure the safety and efficiency of your heating systems with the Altecnic / Caleffi 313560 Relief Valve – the reliable choice for managing pressure in your domestic hot water applications.

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.

**PREL100014 High Capacity Sealed Heating System Pressure Relief Valve** The PREL100014 High Capacity Sealed Heating System Pressure Relief Valve is designed to safely discharge water from the system at a predetermined pressure during instances of over-pressurisation—particularly suitable for larger capacity systems. Manufactured by Reliance Valves, the 100 Series Pressure Relief Valves are crafted from hot pressed brass and are primarily employed to protect closed-circuit wet heating systems against excessive pressure. Key features include an outlet that is one size larger than the inlet, ensuring high discharge flow rates. The valve features a separate seal seating from the diaphragm, enhancing resistance to scaling, and a cover made from OT58 brass. Available in various sizes to accommodate most installations, it operates within a pressure range of 2.5 - 5.0 bar, with the specified response pressure conveniently indicated on the twist cap. The appropriate valve size is determined by the heat output of the boiler, as detailed in the maximum heating capacity table. ### Features and Benefits: - **High Flow Design:** Optimised for larger capacity systems. - **Enhanced Discharge Capacity:** The outlet is larger than the inlet for superior discharge rates. - **Overpressure Protection:** Safeguards wet heating systems against excessive pressure. - **Improved Scaling Resistance:** Diaphragm design enhances resistance to scale build-up. - **Easy Maintenance:** Cartridge design allows for hassle-free servicing and replacements without the need to reset response pressure. - **Versatile Pressure Range:** Set pressure range from 2.5 - 5.0 bar accommodates diverse system requirements. - **Increased Discharge Capability:** High lift design for enhanced discharge performance. - **Application Specific:** Suitable exclusively for heating applications. ### Specifications: - **Size:** 3/4" x 1" - **Connections:** BSP Female Inlet x BSP Female Outlet - **Materials:** Hot pressed DZR Brass - **Medium:** Water - **Set Pressure:** 3 Barg - **Temperature:** +140 °C - **Product Code:** PREL100014 - **Notes:** WRAS approved Ensure the reliability and efficiency of your heating system with the PREL100014 High Capacity Sealed Heating System Pressure Relief Valve—designed to protect and enhance your installation's performance.