Altecnic / Caleffi 311 Series Safety Relief Valve 3/4" x 3/4" F x F 6 Bar - 311560

The Fig. 970W and 970WG valves feature a robust ductile iron body with integrated notch plate, anti-blowout stem, and fully bonded epoxy coating for Level 3 C3 corrosion protection. WRAS approved for potable water (-10 to 80°C), they are maintenance-free, suitable for flow regulation and gas applications, and DN250+ valves include a gear operator. Compliant with BS EN 593/558 and approved for Group 1 & 2 gases and liquids (PED 2014/68/EU). Rated PN16, -10 to 80°C (WRAS) or -10 to 100°C (Non-WRAS).

Please note that Auld Valves Ltd has ceased trading. However, we encourage you to contact us as we may offer alternatives within our product range.

The Auld Standfast Reducing Valve provides precise self-operated pressure control with an accuracy of ±1%. This reliable valve is suitable for steam, gas, and liquids, offering a control valve range from dead tight to full bore. Featuring a high-lift main valve piston with a soft face, it includes four flow trims for adjustments from full to ultra-low flow. Available in 14 sizes and 7 material options, our range also includes pilot controllers, encompassing remote and electronic variants. The Auld Standfast Reducing Valve remains unaffected by fluctuations in inlet pressures, ensuring consistent performance.

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**Product Description** Gate valves are specifically engineered for on-off service applications. These valves comprise a body, bonnet, gate, stem (featuring an internal screw and yoke), a rising stem equipped with a non-rising handwheel, and an integral seat as standard. Additionally, there are options available for renewable seats, along with an open and closed indicator, complete with a lockable handwheel. --- **Features** Gate valves provide reliable shutoff capabilities with minimal pressure drop, rendering them perfect for regulating liquid or gas flow across diverse applications. Their sturdy construction promotes high efficiency and easy maintenance, thanks to their uncomplicated design. Gate valves can be manually operated or automated using devices such as motors, solenoids, or actuators. When the gate is in the closed position, it serves as an effective barrier, preventing flow. In contrast, when opened, the gate retracts from the seat, permitting unrestricted flow through the valve. Once closed, fluid movement is entirely halted. --- **Materials** - **Body/Bonnet**: NAB (ASTM B148 C95800) - **Stem**: NAB (ASTM B150 C63200) / MONEL (ASTM B865 N05500) - **Handwheel**: Stainless Steel (ASTM A351 CF8M) --- **Technical Data #150/PN32** - **Design Standard**: MSS SP 80 / BS 5154 / BS EN 12288 - **Size**: DN15 to DN80 - **End Connection**: ASME B1.20.1 - **Face To Face**: As per manufacturer specifications - **Testing**: EN 12266-1, API 598 - **Max Pressure**: 19 / 32 BAR - **Min Temperature**: -29°C / -10 to 66°C - **Max Pressure**: 7.9 / 14 BAR - **Min Temperature**: 260°C - **Material Test Certification**: BS EN 10204-3.1 --- **Technical Data #300** - **Design Standard**: MSS SP 80 / BS 5154 / BS EN 12288 - **Size**: DN15 to DN80 - **End Connection**: ASME B1.20.1 - **Face To Face**: As per manufacturer specifications - **Testing**: EN 12266-1, API 598 - **Max Pressure**: 49.6 BAR - **Min Temperature**: -29°C - **Max Pressure**: 20.6 BAR - **Min Temperature**: 260°C - **Material Test Certification**: BS EN 10204-3.1 --- Optimise your operations with our premium-quality gate valves, designed for durability and efficiency. Perfect for a wide range of industrial applications, they ensure perfect control over fluid flow while adhering to essential safety and performance standards.