Refrigeration Shut-Off Valves

The Reliance Water Controls (RWC) TPR22 Pressure & Temperature Relief Valves are compact relief valves specifically designed to safeguard against over-pressurisation within unvented hot water systems. Should the input temperature or pressure controls fail, these valves provide essential protection. They are optimally installed at the upper section of a hot water cylinder, where the highest temperatures are typically found. When the system exceeds 95°C, the wax mixture within the temperature probe element expands, lifting the valve off its seat and allowing water to discharge, thereby alleviating the pressure within the cylinder. In instances of increased water pressure without a corresponding temperature rise, the valve will remain closed until the designated relief mechanism pressure is reached, at which point it will open to release the excess pressure. Certain models feature a PTFE coating on the MBSP inlet thread, streamlining the installation process and saving valuable time.

Features and Benefits:

• Protection against temperatures exceeding 95°C
• Prevention of over-pressurisation
• Twist-top cartridge design for effortless servicing
• Available in a range of pressure settings and probe lengths
• Some models include a PTFE coating for added convenience

Specifications:

• Size: 3/4" x 22mm
• Connections: BSP Male Inlet x Compression Outlet
• Materials: Brass
• Medium: Hot water only
• Set Pressure (Set & Locked): 4.5 Barg
• Temperature Relief: +90 to 95°C
• Discharge Capacity: 25kW
• Probe Length: 95mm
• Product Code: PTEM575200
• Notes: WRAS approved with PTFE

**Sizes:** 1" **Connections:** - **Inlet:** Flanged DIN or ANSI RTJ - **Outlet:** Screwed BSPP or NPT **Materials:** Stainless Steel (22.2) **Disk Options:** Metal, PEEK, or Vespel (depending on pressure requirements) **Joints & Seals:** FPM, PTFE **Medium Compatibility:** Steam, Gases, and Liquids **Set Pressure Range:** 100 to 250 Barg **Temperature Range:** -60 to +350°C **Design Specifications:** **Notes:**

Introducing the Reliance Valves Aquasystem Stainless Steel Expansion Vessel, expertly designed for potable water applications. This essential component is built to manage the additional pressure within a water system as the water heats up and expands. By incorporating these expansion vessels, you can effectively prevent pressure build-up in both sealed heating systems and cold water systems, ensuring safe operational levels. Each vessel features a replaceable membrane that safeguards the water from corrosion or contamination, guaranteeing its safety for human consumption. The innovative design allows for easy servicing in situ, without the need to dismantle the vessel.

**Key Features and Benefits:**

• Stainless steel bolted flange ensures longevity and resists corrosion
• Extra-wide membrane opening reduces noise by minimising flow restrictions
• Internal membrane design prevents direct water contact with the steel shell, eliminating internal corrosion
• A comprehensive range available, from 2 to 5000 litres, catering to all application requirements
• All models come with a replaceable membrane to simplify servicing without removal
• Equipped with a pre-charge valve for easy air pressure adjustments
• Designed specifically for use with hot and cold water only

**Specifications:**

• Capacity: 3000 Litres
• Colour: Red
• Pre-Set Pressure (Bar): 4
• Maximum Pressure (Bar): 10.0
• Minimum Temperature: -10°C
• Maximum Temperature: 99°C
• Height: 2790mm
• Diameter: 1200mm
• Water Connection: DN65
• Product Code: XVES050200

**Materials:**

• Shell: Epoxy Coated Steel
• Membrane: EPDM
• Bolted Flange: Stainless Steel

**Standards and Approvals:**

• WRAS approved for vessels up to 1000 litres
• CE marked in accordance with Directive PED 97/23/CE
• TUV Certified
• Materials for 1000 - 5000 litre models comply with BS 6920

Enhance your water system’s efficiency and safety with the Reliance Valves Aquasystem Stainless Steel Expansion Vessel. Ideal for both commercial and domestic applications, it guarantees durability and easy maintenance.