Altecnic / Caleffi 309 Series Pressure & Temperature Relief Valve 1/2" 90°C 10 Bar - 309400CST

**Stainless Steel Expansion Vessel for Potable Water Applications** Introducing the Reliance Valves Aquasystem Replaceable Membrane Potable Water Expansion Vessels, expertly designed to accommodate the additional pressure generated within water systems as the temperature rises and volume expands. These high-quality expansion vessels play an essential role in maintaining safe operating levels by preventing pressure build-up in both sealed heating and cold water systems. Equipped with a replaceable membrane, these vessels safeguard against corrosion and contamination, ensuring that the water remains safe for human consumption. The innovative design allows for easy servicing; the vessel can be maintained without removal, providing a hassle-free solution for quick in situ servicing. **Features and Benefits:** - **Corrosion Resistance:** The stainless steel bolted flange enhances durability and prevents corrosion. - **Noise Reduction:** The extra wide membrane opening minimises noise resulting from restricted water flow. - **Protection Against Corrosion:** The internal membrane ensures no contact between water and the steel shell, effectively preventing internal corrosion. - **Versatile Range:** Available capacities range from 2 to 5000 litres, catering to a variety of applications. - **Easy Maintenance:** All models are supplied with a replaceable membrane, allowing for simplified servicing. - **Convenient Pre-charge Valve:** Easily top up air pressure with the built-in pre-charge valve. - **Hot and Cold Water Compatibility:** Suitable for use with hot and cold water only. **Specifications:** - **Capacity:** 2 Litres - **Colour:** White - **Pre-set Pressure (Bar):** 3.0 - **Maximum Pressure (Bar):** 10.0 - **Minimum Temperature:** -10°C - **Maximum Temperature:** 99°C - **Height:** 250mm - **Diameter:** 120mm - **Water Connection:** 1/2" MBSP - **Product Code:** XVES050010 **Materials:** - **Shell:** Epoxy Coated - **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 - Compliance with BS 6920 for models ranging from 1000 to 5000 litres. Invest in the Reliance Valves Aquasystem Replaceable Membrane Potable Water Expansion Vessels for reliable performance and peace of mind knowing your water supply is safe and efficiently managed.

A marine storm valve is a specialised check valve designed for installation in a ship’s sewage or drainage systems. Its primary function is to prevent seawater from backflowing into the vessel, especially in heavy seas or when the ship is heeled. By serving as a barrier against flooding and contamination through overboard discharge pipes, marine storm valves play a crucial role in maritime safety.

Purpose of a Marine Storm Valve

• Prevents seawater ingress through overboard discharge openings.
• Facilitates the one-way flow of wastewater, bilge, or greywater out of the ship.
• Vital for sewage, greywater, and drainage systems located below the waterline.

We supply marine storm valves from a range of leading manufacturers. Please contact us to discuss your specific requirements.

A marine self-closing valve is an essential component designed to automatically revert to a closed position after manual operation. These valves are extensively utilised on ships to prevent unintentional fluid discharge, enhance safety, and ensure adherence to pollution and fire prevention regulations.

What is a Marine Self-Closing Valve?

This type of valve features a spring-loaded mechanism that opens upon manual activation, typically via a lever or push button, and automatically closes once the operator releases it. In its default state, the valve remains closed, thereby preventing the unintended discharge of fluids such as fuel, oil, or bilge water.

We offer a comprehensive range of Self-Closing Valves from leading manufacturers. For further information or to discuss your specific requirements, please do not hesitate to get in touch with us.