Electrically Actuated Three-Way High Pressure Ball Valves

Introducing our stainless steel expansion vessel, specifically designed for potable water applications. The Reliance Valves Aquasystem Replaceable Membrane Potable Water Expansion Vessels are expertly engineered to accommodate the increased pressure that occurs when water is heated and expands in volume. These expansion vessels are essential for maintaining safe operating levels, effectively preventing any pressure build-up in both sealed heating systems and cold water systems. Featuring a replaceable membrane, these vessels ensure that water remains uncontaminated and free from corrosion, making it safe for human consumption. Additionally, the replaceable membrane allows for straightforward servicing without the need for complete removal, ensuring quick and efficient maintenance on-site.

Features and Benefits:

• Stainless steel bolted flange for enhanced corrosion resistance
• Extra wide membrane opening minimises noise caused by restricted flow
• Internal membrane ensures no direct contact between water and the steel shell, preventing internal corrosion
• Available in a comprehensive range from 2 to 5000 litres, suitable for various applications
• Each version is supplied with a replaceable membrane, facilitating easy servicing without removal
• Pre-charge valve for convenient topping up of air pressure
• Designed exclusively for hot and cold water use

Specifications:

• Capacity: 8 litres
• Colour: White
• Pre-Set Pressure: 3.0 Bar
• Maximum Pressure: 10.0 Bar
• Minimum Temperature: -10°C
• Maximum Temperature: 99°C
• Height: 316mm
• Diameter: 200mm
• Water Connection: 3/4" MBSP
• Product Code: XVES050030

Materials:

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

Standards and Approvals:

• WRAS approved for capacities up to 1000 litres
• CE marked in accordance with Directive PED 97/23/CE
• TUV Certified
• Models from 1000 to 5000 litres comply with BS 6920

Ensure the safety and efficiency of your water system with our premium stainless steel expansion vessels, ideal for any potable water application.

The Medenus RSP254 Pilot Operated Gas Pressure Regulator and Shut Off Valve is designed for applications requiring outlet pressures from 10 mbar to 12 bar with an accuracy class of up to 1%. With three distinct pilot versions available, we ensure the ideal solution to meet your project specifications for inlet pressures up to 16 bar. The Pilot R70-10 is suitable for high-pressure applications, delivering outlet pressures from 500 mbar to 12 bar. This makes it particularly effective in industrial settings, gas furnaces, gas distribution, and for manufacturers of gas engines. The R70-20 has been specifically developed with an integrated 1:2 booster and an optional external I/P converter, enabling us to achieve various set point systems for gas engines. For low pressure applications, the Pilot R70-100 is an exemplary choice, functioning optimally between 10 mbar and 500 mbar outlet pressure with exceptional accuracy. It is predominantly used in city gas distribution systems but also finds its place in industrial applications.

Specifications

• Sizes: 1" (DN25) to 8" (DN200)
• 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): 10 mBarg to 12 Barg (depending on configuration)
• Temperature: -20 to +60 °C
• Notes: Can be installed in any orientation; features a gas-tight zero position.

The Altecnic / Caleffi 309 Pressure & Temperature Relief Valve - 309400CST is designed to effectively control and limit the temperature and pressure of hot water in domestic storage heaters. This essential safety valve ensures that water temperatures do not exceed 100°C, preventing steam formation. When the temperature or pressure reaches its set limits, the valve releases a sufficient amount of water into the atmosphere, ensuring that both temperature and pressure return to safe operating levels.

**How It Works:**

The valve features a thermostat compound within the temperature sensor that is submerged in the hot water storage heater. As the temperature increases, the compound expands, moving a thrust pin that activates the obturator, thereby opening the valve. This mechanism is set to initiate opening at temperatures exceeding 90°C. Regarding pressure, the obturator, which is countered by a spring, lifts when the pressure reaches its designated limit, fully opening the outlet. The pressure setting is predetermined based on the system's maximum permissible pressure. As the temperature and pressure decrease, the valve automatically re-closes within the specified tolerances.

**Product Specifications:**

• Size: 1/2"
• Connections: Male x Ø 15 mm with compression fitting for copper pipe
• Materials: DZR
• Medium: Water
• Set Pressure: 10 Barg
• Discharge Rating: 10 kW
• Temperature Setting: 90°C
• Probe Length: 102mm
• Product Code: 309400CST

**Notes:** WRAS approved, CE marked

This high-quality pressure and temperature relief valve is an indispensable component for maintaining the safety and efficiency of your domestic hot water system. Ensure optimal performance and compliance with regulations by choosing the Altecnic / Caleffi 309 Pressure & Temperature Relief Valve.