Altecnic / Caleffi 311 Series Safety Relief Valve 3/4" x 3/4" F x F 3 Bar - 311530

Features & Benefits: Robust ductile iron body, integrated notch plate for compact design, anti-blowout stem for safe operation, fully bonded epoxy coating for superior corrosion resistance (Level 3 C3), and maintenance-free design to reduce downtime.

Specification: Complies with BS EN 593; face-to-face to BS EN 558; DN250+ valves include fully enclosed gear operator; suitable for flow regulation and gas applications; Fig. 971/971G suitable for Group 1 & 2 gases and liquids per PED 2014/68/EU.

Pressure/Temperature Rating: PN16, -10 to 90°C.

**Product Features and Benefits** - **Horizontal Swing Pattern**: Designed for efficient operation in various applications. - **High-Quality Bronze Construction**: Crafted from robust bronze for durability and longevity. - **Standard Nitrile Disc with Material Alternatives**: Comes with a nitrile disc as standard, with options for alternative materials available to meet specific needs. - **Taper Threaded to BS EN 10226 ISO 7-1 (BS 21)**: Ensures compatibility and compliance with industry standards. **Product Specifications** - **Swing Pattern**: Features a reliable horizontal swing pattern for optimal functionality. - **Threaded Cover**: Includes a securely threaded cover for ease of maintenance. - **Nitrile Disc Included**: Standard nitrile disc, with options for alternative materials available. - **Internal Threading**: Ends are threaded internally to BS EN 10266 (ISO 7) specifications, ensuring compatibility with standard fittings. - **Versatile Mounting Options**: Suitable for installation in both horizontal and vertical pipe configurations (with vertical flow directed upwards). - **Medium Compatibility**: Adapts to Group 1 and Group 2 liquids. **Pressure and Temperature Ratings** - **Standards Compliance**: Meets BS 5154:1991 PN25 specifications. - **Pressure and Temperature Range**: Operates effectively at 25 Barg from -10°C to a restricted maximum of 100°C. This detailed description is optimised for search engines, making it easy for potential customers to find the reliable and versatile valve they need.

### Broady 3500 Safety Relief Valve - Industry-Leading API 526 Solution The **Broady 3500 Safety Relief Valve** is a top-tier API 526 safety relief valve, trusted in the Oil and Gas industry for over 45 years. Designed in orifice sizes ranging from D to T, the Broady 3500 is an essential safety device for any industrial system requiring efficient pressure relief. Its reliability and effectiveness make it a vital component for safeguarding operations in various applications. #### Specifications - **Sizes:** Available from 1” x 2” to 8” x 10” - **Connections:** Flanged to recognised standards - **Orifice:** API orifice designations from D to T - **Materials:** - **Body & Bonnet:** Cast Steel (CS) (to ASME SA216 WCB) or Stainless Steel (SS) (to ASME SA351 CF8M) - **Nozzle and Seat:** 316 Stainless Steel - **Spring:** 316 Stainless Steel - **Disk:** 316 Stainless Steel - **Joints & Seals:** PTFE - **Medium:** Suitable for gas, liquid, and vapour applications - **Set Pressure:** Ranges from 0.34 to 425 Barg - **Temperature Design:** ASME Section VIII, Division 1: “UV” stamp - approved (for gas only). Designed, manufactured, and tested in accordance with API 520, 526, and 527. - **PED Compliance:** Category IV - CE Marked **Note:** (a) Additional connection and material options are available upon request, as detailed in the manufacturer's datasheet. (b) The maximum set pressure, as defined by API 526, is temperature-dependent. --- Optimise your industrial systems with the Broady 3500 Safety Relief Valve for unparalleled performance and safety in pressure relief applications.