Reliance RWC TPR22 Pressure & Temperature Relief Valve 3/4

Reliance RWC TPR22 Pressure & Temperature Relief Valve 3/4" x 22mm 4.5 Bar - PTEM575200

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

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

The Reliance Valves Aquasystem Stainless Steel Expansion Vessel is specifically designed for heating applications. Available in capacities ranging from 2 litres to 5000 litres and with maximum pressure ratings between 8.0 and 10.0 bar, these vessels feature replaceable membranes. The Aquasystem range allows for servicing on-site, ensuring that water does not come into contact with the steel expansion vessel shell, which helps to prevent internal corrosion and extend the vessel's lifespan.

Features and Benefits:

  • Durable stainless steel bolted flange that prevents corrosion.
  • Extra-wide membrane opening to minimise noise caused by restricted flow.
  • Internal membrane design eliminates water contact with the steel shell, thus preventing internal corrosion.
  • A comprehensive range from 2 to 5000 litres suitable for various applications.
  • All models come with replaceable membranes for convenient servicing without removal.
  • Pre-charge valve included for easy topping up of air pressure.
  • Designed exclusively for heating applications.

Specifications:

  • Capacity: 500 Litres
  • Colour: Red
  • Pre-Set Pressure (Bar): 1.5
  • Maximum Pressure (Bar): Up to 500 Litre - 8.0 bar, 750 Litre and above - 10.0 bar
  • Minimum Temperature: -10°C
  • Maximum Temperature: 99°C
  • Height: 1483mm
  • Diameter: 750mm
  • Water Connection: 1.3/4" MBSP
  • Product Code: XVES100150

Materials:

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

Standards and Approvals:

  • CE marked according to Directive PED 97/23/CE
  • TÜV Certified
Flowstar UK Ltd

Flowstar (UK) Ltd

Wiltshire Road, Kingston-upon-Hull, East Riding of Yorkshire, HU4 6PA, United Kingdom

Flowstar (UK) Ltd is a leading global supplier of safety, relief, and reducing valves. With strong partnerships across major manufacturers, we deliver precise, reliable valve solutions tailored to your needs. Email enquiries to sales@flowstar.co.uk or call us on +44 (0)1482 601030.