CONCOA 493 Series Regulator

The PREL102042 Potable Water Pressure Relief Valve is essential for managing cold water overpressurisation in unvented cylinders. Part of the Reliance Valves 102 Series, these Potable Water Pressure Relief Valves are specifically designed to protect unvented systems from excessive pressure. Each valve is pre-set and locked to a designated pressure; should the system exceed this pressure, the valve will effortlessly lift off its seat, allowing water to discharge safely into the waste system. Serving as the first line of defence in unvented installations, these valves are engineered with a single-piece cartridge for reliability and ease of maintenance. They are available in various pressure settings from 3.5 to 8 bar and come with multiple connection sizes to facilitate versatile installations.

Features and Benefits:

• Easy and quick removal of the single-piece cartridge for cleaning or replacement
• Advanced diaphragm design enhances resistance to scale build-up
• Effectively protects against overpressurisation issues
• Multiple connection options offer flexible installation configurations
• Customisable relief pressure range from 3.5 to 8.0 bar
• Designed exclusively 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: +140°C
• Product Code: PREL102042
• Notes: WRAS approved

Features & Benefits

• Our check valves are engineered to allow fluid flow in a single direction while automatically closing if the flow reverses—this functionality is influenced by the pressure and velocity of the fluid.

• The Non-Slam design features a rubber seat and spring-assisted closure, ensuring reliable operation without the risk of slamming.

• The EPDM rubber seat promotes quiet operation and enhances the seating of the disk for superior performance.

• For sizes DN200 and above, eyebolts can be fitted to the tapped holes, complying with BS EN ISO 3226: 2010 (please note, eyebolts are not included with the valve).

• The robust design and construction make this valve particularly suitable for pump duty applications.

Specification

• The face-to-face dimensions adhere to BS EN 558 series 16 standards.

• This valve can be installed in both vertical and horizontal pipelines.

• When installed in vertical pipelines, the flow direction must be upwards.

• Suitable for use with group 2 liquids only, as specified by the Pressure Equipment Directive 2014/68/EU.

Pressure/Temperature Rating

• Model: Figure 866; Pressure Rating: PN25

• Temperature range: -10°C to 120°C

The Reliance Water Controls (RWC) TPR15 Pressure and Temperature Relief Valves are compact devices designed to protect against over-pressurisation within unvented hot water systems. These valves are essential for safeguarding your system in the event that temperature or pressure controls fail. Engineered for installation at the upper section of a hot water cylinder, the TPR15 valves effectively monitor the highest temperatures within the system. When the temperature exceeds 95°C, the wax mixture inside the temperature probe expands, raising the valve off its seat and allowing water to escape, thus reducing the pressure within the cylinder. In cases where water pressure increases without a corresponding temperature rise, the valve remains closed until the set pressure of the relief mechanism is reached, at which point it opens to relieve excess pressure. Select models feature a PTFE coating on the Male BSP (MBSP) inlet thread, facilitating quicker, hassle-free installation.

**Features and Benefits:**

• Protects against temperatures exceeding 95°C
• Prevents over-pressurisation
• Twist top cartridge design for straightforward servicing
• Available with various pressure settings and probe lengths
• Some models include a PTFE coating for improved installation efficiency

**Specifications:**

• Size: 1/2" x 15mm
• Connections: BSP Male Inlet x Compression Outlet
• Materials: Brass
• Medium: Hot water only
• Set Pressure (Set & Locked): 7 Barg
• Temperature Relief: +90 to 95°C
• Discharge Capacity: 10kW
• Probe Length: 200mm
• Product Code: PTEM550951
• Notes: Long probe, WRAS approved

Ensure your unvented hot water system operates safely and efficiently with the RWC TPR15 Pressure and Temperature Relief Valves, the reliable choice for enhanced protection against extreme temperature and pressure conditions.