NABIC 542L Relief Valve

Introducing the PREL101010 Reliance Water Controls (RWC) 101 Series Sealed Heating System Pressure Relief Valve, an essential component designed to discharge water from your heating system at a predetermined pressure in the event of over-pressurisation. The Reliance Valves 101 Series Pressure Relief Valve serves as a vital safety feature in sealed heating systems, ensuring optimal performance and risk mitigation. Upon installation, this reliable valve is calibrated to the correct pressure; when the system pressure increases and reaches the preset limit, the valve automatically opens to release excess pressure into the atmosphere. This crucial mechanism helps prevent the risk of excessive pressure that could potentially harm the system and pose a hazard to individuals nearby.

Features and Benefits:

• Innovative diaphragm design enhances resistance to scaling, ultimately prolonging the lifespan of the valve.
• The easy removal of the single-piece cartridge allows straightforward access to the seat for cleaning or cartridge replacement.
• Flexible set relief pressure range from 2.0 bar to 6.0 bar accommodates various system design requirements.
• Available with FSBP or MBSP/FBSP connections, offering complete installation versatility.
• Designed specifically for heating applications only, ensuring optimal functionality.

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 Rating: +140°C
• Product Code: PREL101010

Invest in the reliability and safety of your heating system with the PREL101010 Reliance Water Controls Pressure Relief Valve—an indispensable solution for effective thermal management.

The Resideo Braukmann BS300 backflow preventer offers reliable protection against back pressure, backflow, and back siphonage for fluids classified up to category 4. This device is essential for maintaining the integrity of drinking water systems.

For further information on backflow prevention, we invite you to explore our informative article in the Technical section of our website.

**Product Specifications**

**Sizes Available:** 2.1/2", 3", and 4" in stock (6" and 8" available to order)
**Connections:** Flanged PN10
**Materials:** Ductile iron housing, powder coated with polyamide
**Suitable Medium:** Drinking Water
**Inlet Water Pressure:** 1.5 to 10 Barg
**Maximum Water Temperature:** 60°C
**Notes:** WRAS approved

The Altecnic / Caleffi 253 Solar Safety Valve - 253046 is designed to regulate pressure within the primary circuits of solar heating systems. This valve is specifically chosen based on the required set pressure. As pressure increases within the system, the valve activates when the discharge pressure is reached, releasing excess pressure to the atmosphere. This vital function helps prevent potential damage to solar collectors and other system components caused by excessive pressure levels.

Specification

• Size: 1/2" x 3/4"
• Connections: BSP Female Inlet x BSP Female Outlet
• Materials: Brass (Chrome Plated)
• Medium: Water, Glycol Solutions (Maximum Glycol Percentage: 50%)
• Set Pressure: 6 Barg
• Temperature Range: -30 to +160 degrees Celsius
• Product Code: 253046
• Notes: CE marked

This reliable safety valve is an essential component for maintaining the efficiency and safety of your solar heating system. Its robust construction and advanced design ensure it meets industry standards, providing peace of mind for your installation.