Pilot Operated Safety Valve

The NABIC 542 Safety Valve is a highly versatile valve, designed for use with hot water, steam, or air. Primarily engineered for the protection of hot water boilers, the NABIC 542's extensive range of applications makes it an excellent choice for a general-purpose safety valve. With an industry-leading 5-year guarantee, NABIC Valves ensure reliability and peace of mind for your safety needs.

Specification

Sizes: 1/2" (DN15), 3/4" (DN20), 1" (DN25), 1.1/4" (DN32), 1.1/2" (DN40), 2" (DN50), 2.1/2" (DN65), 3" (DN80)
Connections: Female BSPP Inlet x Female BSPP Outlet
Materials: Gunmetal Body, PTFE Seat
Set Pressure: 1.0 to 10.5 Barg (DN15 to DN25), 0.3 to 10.5 Barg (DN32 to DN80)
Temperature: -20°C to 195°C Max

Note: Our valves are set and tested to your required pressure prior to shipping, ensuring optimal performance upon installation.

The Altecnic / Caleffi 312 Relief Valve - Pushfit - A312401CST is an essential component for domestic hot water systems, designed to safeguard hot water cylinders, as well as heating systems, including boilers and other critical components. This relief valve is specifically selected according to the required set pressure to ensure optimal performance. When the system pressure exceeds the predetermined discharge pressure, the valve activates, releasing excess pressure to the atmosphere. This vital function helps to prevent dangerous pressure levels that could potentially harm the boiler, hot water storage cylinder, and surrounding personnel.

**Specifications**

**Size:** 1/2" x 1/2"
**Connections:** 1/2" Pushfit Inlet x BSP Female Outlet
**Materials:** Brass
**Medium:** Air and Water
**Set Pressure:** 3 Barg
**Temperature Range:** +5 to +110 °C
**Product Code:** A312401CST
**Notes:** WRAS approved, CE marked, Pressure gauge included

Don't compromise the safety of your heating system – choose the Altecnic / Caleffi 312 Relief Valve today for reliable pressure regulation and protection.

**FSDIFDW Double Way Rupture Discs: High-Performance Pressure Relief Solutions** The FSDIFDW Double Way Rupture Discs are expertly engineered composite conventional discs, constructed from four essential components: a slotted, perforated metal section, a seal membrane (primarily made from PTFE, but also available in various metallic and non-metallic materials), a protective layer, and a calibration ring. Designed for installation between flanges, these discs excel in static applications involving both gases and liquids at low pressures. Responding to excessive pressure, the FSDIFDW rupture discs achieve full opening in mere milliseconds, making them an ideal choice for valve protection. For applications requiring vacuum or counter-pressure protection, support options are also available. These composite rupture discs can effectively provide simultaneous protection against both pressure and vacuum scenarios. **Specifications** - **Sizes:** Available in 2" (DN50) to 40" (DN1000) - **Materials:** Stainless steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium; Membrane options include PTFE, PFA, Stainless steel, and Aluminium - **Rupture Pressure:** Ranges from 0.5 to 5 bar g (dependent on material and diameter) - **Krl:** - **Tolerance:** ± 5% to ± 20% - **Temperature Resistance:** Membrane options in PTFE/PFA withstand up to 265°C, with some materials performing up to 480°C (depending on membrane type) - **Operating Margin:** Up to 70% - **Vacuum Support:** Not available - **Fragmentation:** None (membrane only) - **Use Under Valve:** Yes - **Corrosion Resistance:** Good; can be enhanced with a PTFE membrane - **Linings:** Available - **Container Type:** Installed between flanges - **Rupture Sensor Options:** Electrical, Magnetic, Inductive, Optical - **PED Certification (CE Stamp):** Available - **ATEX EX II 2 GD Certification:** Available For more information or to request a quotation, please download our Rupture Disc Request Form and send the completed document to sales@flowstar.co.uk. By choosing FSDIFDW Double Way Rupture Discs, you ensure effective and reliable pressure relief for your industrial applications.