Altecnic / Caleffi 309 Series Pressure & Temperature Relief Valve 1/2" 90°C 7 Bar - 309473CST

**Features & Benefits** • The integrated shroud offers a tamper-resistant design, ensuring enhanced security. • Constructed from DZR brass, these draining taps are compatible with both hot and cold water systems, handling pressures up to 16 bar and temperatures reaching 110°C. • This innovative design allows for efficient system drainage without the need to remove pipework, saving you time and effort. • The inlet features a threaded taper male connection that complies with BS EN 10226-2 standards. • The outlet is ribbed, making it easy to connect a hose for convenient drainage. • WRAS approved for temperatures up to 85°C, guaranteeing adherence to high safety and quality standards. **Specification** **Pressure/Temperature Rating** • Designed to withstand pressures of 16 bar and a maximum temperature of 110°C, ensuring reliability and durability in various conditions. This updated description not only includes essential details about the product but is also optimised for search engines, enhancing visibility to potential customers.

**Stainless Steel Expansion Vessel for Potable Water Applications** Introducing the Reliance Valves Aquasystem Replaceable Membrane Potable Water Expansion Vessel, expertly designed to accommodate the additional load within your water system as water heats up and expands. Our stainless steel vessels play a crucial role in maintaining safe operational levels by effectively preventing pressure build-up in both sealed heating and cold water systems. At the heart of our expansion vessels is a replaceable membrane that safeguards against corrosion and contamination, ensuring that the water remains safe for human consumption. This innovative design allows for straightforward servicing without the need to dismantle the vessel, enabling quick and efficient maintenance in situ. **Features and Benefits:** - **Corrosion Resistant Design:** The stainless steel bolted flange provides enhanced protection against corrosion, ensuring longevity. - **Reduced Noise Levels:** An extra-wide membrane opening helps to minimise noise caused by restricted flow. - **Internal Protection:** The internal membrane keeps water from contacting the steel shell, preventing any risk of internal corrosion. - **Versatile Capacities:** Our range extends from 2 to 5000 litres, catering to all application requirements. - **Easy Maintenance:** Each version is fitted with a replaceable membrane, allowing for maintenance without the need for vessel removal. - **Convenient Pre-Charge Valve:** Easily top up air pressure with the built-in pre-charge valve. - **Hot and Cold Water Compatibility:** Suitable for both hot and cold water systems. **Specifications:** - **Capacity:** 18 Litres - **Colour:** White - **Pre-Set Pressure:** 3 Bar - **Maximum Pressure:** 10.0 Bar - **Minimum Temperature:** -10°C - **Maximum Temperature:** 99°C - **Height:** 430mm - **Diameter:** 280mm - **Water Connection:** 3/4” MBSP - **Product Code:** XVES050050 **Materials:** - **Shell:** Epoxy Coated - **Membrane:** EPDM - **Bolted Flange:** Stainless Steel **Standards and Approvals:** - WRAS Approved up to 1000 litres - CE Marked according to Directive PED 97/23/CE - TUV Certified - Models ranging from 1000 to 5000 litres comply with BS 6920 Ensure the safety and reliability of your water systems with the Reliance Valves Aquasystem Replaceable Membrane Potable Water Expansion Vessel. Perfect for domestic and commercial applications alike.

The Medenus RS255 Gas Pressure Regulator and Shut Off Valve guarantees a consistent outlet pressure, irrespective of the primary inlet pressure. This device adeptly manages variations in gas usage, providing rapid pressure regulation when there are sudden changes in flow rate. Additionally, the integrated safety shut off valve ensures secure operation by shutting off in the event of excessively high or low pressure levels.

The Medenus RS255 Gas Pressure Regulator and Shut Off Valve complies with DVGW Code of Practice G260/262 and is suitable for all neutral and non-corrosive gases (other gases available upon request). It comes with flange connections ranging from DN50 to DN100 and is capable of handling working pressures up to 16 bar. All gas pressure regulators in this range are certified by DVGW and carry CE certification.

Every regulator in the RS series boasts several options, including a safety membrane, vent valve, remote release for the shut off valve (SSV), noise reduction features, and more. For comprehensive details, please consult our documentation or reach out to our team.

Specifications

• Sizes: 2" (DN50) to 4" (DN100)
• Connections: Flanged PN or ANSI
• Materials: Housing: Silumin Casting, Internal Parts: Stainless Steel, Disk: NBR (vulcanised), Joints & Seals: Diaphragms: NBR
• Medium: Gas
• Inlet Pressure (Max): 16 Barg
• Outlet Pressure (Max): 3 Barg
• Temperature: -20 to +60 degC

Note: The regulator can be installed in any orientation and features a gas-tight zero position.