Altecnic / Caleffi Series 312 Pressure Relief Valve 1/2" Pushfit x F 3 Bar - A312401CST

**Stainless Steel Expansion Vessel for Heating Applications** Introducing the Reliance Valves Aquasystem Heating Expansion Vessels, expertly designed for a variety of heating applications. Our stainless steel expansion vessels are available in capacities ranging from 2 litres to 5,000 litres, with maximum pressure ratings between 8.0 and 10.0 bar. Each unit features replaceable membranes, allowing for convenient servicing on-site. This innovative design ensures that water never comes into contact with the steel shell, significantly reducing the risk of internal corrosion and enhancing the longevity of the vessel. **Features and Benefits:** - **Corrosion-Resistant Design:** The stainless steel bolted flange provides robust protection against corrosion, ensuring durability. - **Enhanced Flow and Reduced Noise:** The extra wide membrane opening optimises flow, minimising noise caused by restricted water movement. - **Internal Protection:** The internal membrane design prevents any water contact with the steel shell, effectively mitigating internal corrosion. - **Versatile Capacity Range:** Our vessels come in a broad range of sizes from 2 to 5,000 litres, catering to all heating applications. - **Ease of Maintenance:** Each version is equipped with a replaceable membrane, allowing for servicing without the need to remove the vessel. - **Convenient Pre-Charge Valve:** Topping up air pressure is straightforward with the inclusion of a pre-charge valve. - **Specific Application:** Designed exclusively for heating applications. **Specifications:** - **Capacity:** 50 Litres - **Colour:** Red - **Pre-Set Pressure:** 1.5 Bar - **Maximum Pressure:** Up to 500 Litres - 8.0 Bar / 750 Litres and above - 10.0 Bar - **Minimum Temperature:** -10°C - **Maximum Temperature:** 99°C - **Height:** 364mm - **Diameter:** 365mm - **Water Connection:** 3/4" MBSP **Materials:** - **Shell:** Epoxy Coated Steel - **Membrane:** EPDM - **Bolted Flange:** Galvanised Steel **Standards and Approvals:** - CE marked according to Directive PED 97/23/CE - TUV Certified Upgrade your heating system with Reliance Valves Aquasystem Heating Expansion Vessels—engineered for performance, longevity, and reliability. Perfect for any heating application, our expansion vessels deliver exceptional quality and peace of mind.

**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.

**FSLPDULP Ultra Low Pressure Rupture Discs: Reliable Protection for Low Pressure Systems** The FSLPDULP Ultra Low Pressure Rupture Discs offer a straightforward, dependable, and cost-effective solution for applications requiring protection at extremely low pressures, whether positive or negative. These rupture discs are primarily designed to safeguard processing and storage tanks, atmospheric vessels, and silos that operate under low design pressures and can only withstand minimal pressures and vacuums, thus preventing potential implosion or rupture. One particularly noteworthy application is their use in protecting biogas digesters. Constructed as flat composite discs, FSLPDULP rupture discs consist of four integral components: - A slotted, perforated metal section - A sealing membrane (commonly PTFE, but also available in various other metallic or non-metallic materials) - A protective section - A calibration ring with blades to enhance membrane rupture performance FSLPDULP rupture discs are designed to open without fragmentation, ensuring that product contamination is avoided. They can be tailored to accommodate a wide variety of non-standard specifications and applications, and can also be configured for dual pressure and vacuum protection to withstand both vacuum and counter-pressure environments. **Specifications:** - **Sizes:** Ranging from 2" (DN50) to 20" (DN500) - **Materials:** Options include Stainless Steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, and Titanium. Membrane options include PTFE and PFA. - **Rupture Pressure:** Available from 5 to 500 millibar g (depending on the material and diameter) - **Krl:** *[specify if applicable]* - **Tolerance:** ±5% to ±20% - **Temperature Resistance:** Up to 265 °C - **Operating Margin:** Up to 60% - **Vacuum Support:** Offered - **Fragmentation:** None (membrane only) - **Usage Under Valve:** Yes - **Corrosion Resistance:** Good - can be enhanced with a PTFE membrane - **Linings:** Yes - **Installation:** Mounted between flanges - **Rupture Sensor Options:** Electrical, Magnetic, Inductive, Optical - **ATEX EX II 2 GD Certification:** Available **Order Your Rupture Discs Today** To place your order, please download our Rupture Disc Request Form. Once completed, email it to sales@flowstar.co.uk. Protect your systems with the reliable FSLPDULP Ultra Low Pressure Rupture Discs today!