Refrigeration Constant Pressure Valves

**F400 Storage Tank Emergency Relief Manway - 6" to 36" Flanged** The F400 Storage Tank Emergency Relief Manway is designed to ensure the safety of tanks and vessels during periods of excessive pressure, particularly those arising from external fire sources. It also provides convenient access for inspection and cleaning purposes. This versatile manway features a pressure range of +4 to 140 mBarg and is available in various sizes, from 8 inches (200 mm) to 36 inches (900 mm), making it suitable for a wide array of applications. **Specifications:** - **Size Range:** 8” (200 mm) to 36” (900 mm) - **Standard Body Materials:** Aluminium, Carbon Steel, Stainless Steel - **Diaphragm Material:** PTFE - **Machinable Seats:** Standard - **Flange Options:** Standard drilled flanges available in ANSI, DIN, and API configurations - **Automatic Re-seat Feature:** Yes **Custom Solutions for Non-Standard Applications:** The F400 Series is highly adaptable and offers numerous options for special applications. For environments with stringent safety requirements, we can supply manways made from exotic materials such as Hastelloy, Monel, and various specialised plastics. Additionally, we can apply special coatings for extreme service conditions. For low-temperature applications, internal components can be PTFE coated to prevent seizing. Ensure the safety and efficiency of your storage systems with the F400 Storage Tank Emergency Relief Manway – a reliable solution for managing pressure and maintaining access for tank maintenance.

The Altecnic / Caleffi 311 Safety Valve - 311480 are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity. 

Specification

Size: 1/2" x 1/2"Connections: BSP Female Inlet x BSP Female OutletMaterials: BrassMedium: Air and WaterSet Pressure: 8 BargDischarge Flowrate: 322.7 kg/hrMax Boiler Rating: 187.5 kWTemperature: +5 to +110 degCProduct Code: 311480Notes: WRAS approved, CE marked

The Altecnic / Caleffi 311 Safety Valve - 311530 is an essential component in domestic hot water systems, designed to safeguard the hot water cylinder and heating systems by protecting boilers and other vital components. This safety valve is meticulously chosen according to the required set pressure. As system pressure increases, the valve automatically opens at the discharge pressure to release excess pressure safely into the atmosphere, thereby preventing dangerous pressure levels that could jeopardise the boiler, hot water storage cylinder, and the safety of personnel in proximity.

Product Specification

• Size: 3/4" x 3/4"
• Connections: BSP Female Inlet x BSP Female Outlet
• Materials: Brass
• Medium: Air and Water
• Set Pressure: 3 Barg
• Discharge Flowrate: 142.1 kg/hr
• Max Boiler Rating: 82.5 kW
• Temperature Range: +5 to +110 °C
• Product Code: 311530
• Notes: WRAS approved, CE marked

Ensure the safety and efficiency of your hot water and heating systems with the reliable Altecnic / Caleffi 311530 Safety Valve. Ideal for both residential and commercial applications, this valve meets stringent safety standards, making it a trusted choice for heating professionals across the UK.