Altecnic / Caleffi 311 Series Safety Relief Valve 1/2" x 1/2" F x F 3 Bar - 311430

The Valfonta Model 250 Liquid Ejector is designed for the efficient lifting of liquids, including oils (both hot and cold), as well as fluid and viscous substances. With a maximum lift height of 6 metres, this ejector offers outstanding reliability, as it features no moving parts, ensuring minimal maintenance and long-lasting performance. Ideal for various industrial applications, the Valfonta Model 250 is the perfect solution for your liquid handling needs.

**FSTCDFA Forward Acting Rupture Discs: Enhanced Safety for Road and Rail Tankers** The FSTCDFA Forward Acting Rupture Discs are meticulously engineered composite discs comprising four key components: a slotted, perforated metal section; a sealing membrane (typically made from PTFE, but also available in various other metallic and non-metallic materials); a protective segment; and a calibration ring. These discs are specifically designed for installation on road or rail tankers that transport liquids and gases under static, cycling, and pulsating conditions. FSTCDFA discs respond to excessive pressure with a complete opening within milliseconds, making them an excellent choice for valve protection. Additional supports can be supplied for vacuum or counter-pressure protection. **Product Specifications:** - **Sizes:** 2" (DN50), 2.1/2" (DN65), 3" (DN80) - **Materials:** Stainless steel / Membrane: PTFE, PFA - **Rupture Pressure:** Ranges from 3 to 5 bar g - **Tolerance:** ± 5% - **Temperature Resistance:** Up to 265 °C - **Operating Margin:** Up to 80% - **Vacuum Support:** Available - **Fragmentation:** None (membrane only) - **Suitable for Use Under Valves:** Yes - **Corrosion Resistance:** Good - can be enhanced with a PTFE membrane - **Linings:** Yes - **Mounting:** Directly mounted on the container - **Rupture Sensor Options:** Electrical, Magnetic, Inductive, Optical - **PED Certification (CE Mark):** Available - **ATEX EX II 2 GD Certification:** Available To obtain a Rupture Disc Request Form, please download it and send the completed version to sales@flowstar.co.uk. Ensure the safety and reliability of your operations with our FSTCDFA Forward Acting Rupture Discs, the ideal choice for pressure relief in your transportation systems. Optimised for performance and compliance, our rupture discs are a valuable addition to your safety management practices.

Features & Benefits

• Single unit Y-Pattern globe valves with an integrated orifice plate, designed to create a fixed orifice flow measurement unit, providing both regulation and isolation capabilities. • The Double Regulating feature enables the valve to be used for isolation and allows it to return to its pre-set position, ensuring the desired flow rate is maintained. • Flow measurement accuracy of ±5% is guaranteed at all open positions of the valve in line with BS 7350: 1990 standards. • Ideal for injection or other circuits that require a double regulating valve for effective system balancing. • Finished with an external spray epoxy coating for enhanced durability.

Specification

• Y-Pattern globe valves designed for flow regulation and isolation, equipped with Figure 631 test points for effective flow measurement. • These valves meet the specifications of BS 7350, with flanged ends conforming to BS EN 1092-2 (formerly BS 4504).

Pressure/Temperature Rating

• PN16 / -10 to 120°C • Ratings comply with BS EN 1092-2 PN16 (previously BS 4504).