Bailey Birkett G4 Pressure Reducing Valve - Fig 2042

The FSKRDA rupture discs use advanced sector technology, ensuring the convex disc camber remains unchanged by operating pressure until reverse pressure is reached. Designed for high reliability, they handle up to 95% operating-to-burst pressure ratios and thousands of cycles without compromising performance. On activation, the disc opens fully along the scored line within milliseconds, without fragmentation. These discs are less sensitive to temperature variations, making them ideal for applications with wide thermal swings.

Their innovative design allows safe use with liquids only, including cycling and pulsating conditions, without reducing safety margins. They are particularly suitable for isolating safety valves. A wide range of materials and thicknesses provides excellent corrosion resistance, further enhanced with optional PTFE linings. Vacuum support is not required, and the discs can withstand high counter-pressures.

Specifications:

• Sizes: 1" (DN25) to 36" (DN900)

• Materials: Stainless steel, Alloy 201, 400, 600, C276, Titanium

• Rupture Pressure: 0.41–137 bar g (6–2000 psi g)

• Krl: 0.48

• Tolerance: ±5% to ±20%

• Temperature Range: –196°C to 480°C

• Operating Margin: 90–95%

• Fragmentation: None

• Use Under Valve: Yes

• Corrosion Resistance: Very good

• Linings: Optional PTFE

• Holder Options: FSHR/A, FSHR/P, FSHR/F, FSHTC

• Rupture Sensor: Electrical, Magnetic, Inductive, Optical

• Certifications: ASME (UD Stamp), PED (CE), ATEX EX II 2 GD

• Notes: Compliant with ASME Section VIII, Division 1 requirements

The PREL103005 Sealed Pressure Relief Valve (PRV) with a 1/4" Gauge Port (valve supplied without gauge) effectively discharges water from the system at a predetermined pressure, in the event of over-pressurisation within your heating system. The Reliance Valves 103 Series Sealed Heating System Pressure Relief Valve is primarily designed as a critical safety component within sealed heating systems. Upon installation, the pressure relief valve is calibrated to an appropriate pressure. If the system pressure exceeds this set point, the valve activates and releases excess pressure into the atmosphere, thereby preventing the pressure from escalating to potentially hazardous levels that could not only damage the heating system but also pose risks to individuals nearby.

**Features and Benefits:**

• Diaphragm design enhances resistance to scaling, prolonging the valve's lifespan
• Easy removal of the single-piece cartridge allows for straightforward cleaning or cartridge replacement
• Set relief pressure range of 3.0 bar
• Available with 15mm connections for installation versatility
• Designed exclusively for heating applications

**Specification:**

• Size: 15mm x 15mm
• Connections: Compression Inlet x Compression Outlet
• Materials: Hot pressed DZR Brass
• Medium: Water
• Set Pressure: 3 Barg
• Temperature: +140°C
• Product Code: PREL103005
• Notes: WRAS approved, includes a 1/4" Gauge port (valve supplied without gauge)

Investing in the PREL103005 sealed PRV ensures the safety and integrity of your heating system, providing peace of mind and reliable operation.