Altecnic / Caleffi Pressure Relief Valve with Circlip Connection 4.5 Bar - F0000243

The PREL104012 High Capacity Potable Water Pressure Relief Valve discharges water off the system at a set pressure in the event of cold water over pressurisation to an unvented cylinder (high flow for larger capacity systems) Reliance Valves 104 Series High Capacity Potable Water Pressure Relief Valve is a high capacity range of pressure relief valves designed to protect an unvented system from over pressurisation. The valves are pre-set and locked to a particular pressure, and if the system exceeds this pressure the valve will lift off the seat and water will discharge from the valve to the waste. The outlet connection is one size larger than the inlet to guarantee the valve will be able to cope with a high capacity discharge. This is the first safety device in line within an unvented system. The valves are available in different pressures ranging from 3.5 - 8 bar, as well as multiple connection sizes to allow for flexible installation. 

Features and benefits: 

- High flow design for larger capacity systems 

- Rapid removal of single piece cartridge for cleaning or replacement 

- Diaphragm design gives improved resistance against scale 

- Protects against over pressurisation 

- Multiple connections for flexible installation 

- Set relief pressure range from 3.5-8.0 bar 

- Suitable for cold water use only 

Specification

Size: 1.1/2" x 2"Connections: BSP Female Inlet x BSP Female OutletMaterials: Hot pressed DZR BrassMedium: Cold waterSet Pressure: 6 BargTemperature: +140 degCProduct Code: PREL104012

Features & Benefits

• Resistant to dezincification
• Lightweight, compact design for easy installation and operation
• Enhanced leak protection
• Increased durability during installation
• Available in sizes ranging from 15 to 28mm
• WRAS approved for quality assurance

Specifications

• UK End Connection: Compression
• Compliant with BS EN 1254-2:1998 Standards
• Operator: Lever mechanism
• Quarter turn operation, ensuring ease of use
• PTFE seats and stem seal for reliable sealing
• WRAS listed for assurance of safety and compliance
• Suitable for low temperature hot water (LTHW), chilled, and wholesome (potable) water services

Pressure/Temperature Rating

Please refer to the datasheet for detailed pressure and temperature ratings.

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The Kunkle Bailey 707ML Safety Relief Valve Male x Female features a top-guided design, which merges an unobstructed seat bore with an exceptional high lift capability. This valve is certified to BS EN 4126 Part 1 (BS6759 pt 1:2:3) and is ideal for applications involving air/gas, steam/hot water (above 212°F / 100°C), and process liquids, depending on the specific model acquired. We will set and test the valve to meet your specifications and can provide a pressure test certificate upon request, confirming its calibration before dispatch.

Specification

Sizes: 1/2" to 2" Connections: BSP Male Inlet x BSP Female Outlet Materials: Bronze body, Chrome Alloy spring Disc: Stainless Steel Medium: Air, Vapours, Gases, Liquids, and Steam Set Pressure: 0.35 to 24 Barg Temperature: -20 to +224°C Notes: Also recognised as IMI Bailey Birkett valves, Kunkle Emerson valves, and Safety Systems UK valves.