Reliance RWC 500 Litre Heating Expansion Vessel Tank with Replaceable Membrane Pre Set 1.5 Bar - XVES100150

**PREL107015 Potable Water Pressure Relief Valve** The PREL107015 Potable Water Pressure Relief Valve is designed to effectively manage over pressurisation in unvented cold water systems. Part of the esteemed Reliance Valves 107 Series, this valve serves as a crucial safety mechanism, ensuring the protection of your unvented cylinder from excess pressure. When the system pressure surpasses the pre-set limit, the valve automatically activates, lifting off the seat and allowing water to discharge to waste. This automatic response positions the valve as the first line of defence in safeguarding your system's integrity. Available with adjustable pressure settings ranging from 3.5 to 6 bar, the PREL107015 valve offers multiple connection sizes to facilitate a seamless installation process, enhancing its versatility for various applications. ### **Features and Benefits:** - **Advanced Diaphragm Design:** Provides improved resistance against scale buildup. - **Reliable Protection:** Safeguards your system from over pressurisation. - **Flexible Installation Options:** Multiple connection sizes to suit diverse setups. - **Adjustable Pressure Range:** Set relief pressure available from 3.5 to 6.0 bar. - **Cold Water Use Only:** Specifically designed for cold water applications. ### **Specifications:** - **Size:** 1/2" x 1/2" - **Connections:** BSP Male Inlet x BSP Female Outlet - **Materials:** Hot pressed DZR Brass - **Medium:** Water - **Set Pressure:** 6 Barg - **Temperature Resistance:** Up to +110°C - **Product Code:** PREL107015 - **Notes:** WRAS approved This reliable Potable Water Pressure Relief Valve is essential for maintaining a safe and efficient unvented system, providing peace of mind through its robust design and proven performance. *For optimal performance in your cold water systems, trust the PREL107015 valve for unparalleled safety and reliability.*

The FSSCDN Nanoscored rupture disc features precision micro-scored petals with four, six, or more radial scores, ensuring rapid, controlled opening while minimizing the risk of petal separation. This design makes the disc particularly well suited for high burst pressure applications and demanding operating environments.

Engineered for use with gases and liquids, the FSSCDN performs reliably under cycling and pulsating conditions without compromising safety margins. In the event of overpressure, the disc activates within milliseconds and opens cleanly without fragmentation, making it an excellent solution for protecting safety relief valves.

The disc supports an operating-to-burst pressure ratio of up to 85% and offers excellent corrosion resistance, which can be further enhanced with an optional PTFE lining. In many installations, the disc can also withstand full vacuum conditions without the need for additional supports, providing greater installation flexibility.

Key Specifications:

• Sizes: 1" (DN25) to 36" (DN900)

• Materials: Stainless steel, Alloy 201, 400, 600, 625, C276, Titanium

• Burst Pressure Range: 2–413 bar g (30–6000 psi g), depending on size and material

• Krl: 1.33

• Tolerance: ±5% to ±20%

• Temperature Range: –196°C to 600°C

• Operating Margin: Up to 85%

• Fragmentation: None

• Use Under Valve: Yes

• Corrosion Resistance: Very good

• Linings: Optional

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

• Rupture Detection: Electrical, Magnetic, Inductive, Optical

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