Valfonta M1 Steam Pressure Reducing Valve

**FSDIFFA Forward Acting Rupture Discs: Reliable Pressure and Vacuum Protection** The FSDIFFA Forward Acting Rupture Discs are advanced composite devices designed from four essential components: a slotted, perforated metal section, a sealing membrane (available in PTFE along with various other metallic and non-metallic materials), a protective cover, and a calibration ring. These rupture discs are expertly engineered to be installed between flanges, making them ideal for use with gases and liquids under static conditions and at low pressure levels. FSDIFFA discs respond swiftly to excessive pressure, achieving total opening in just a few milliseconds, thus providing effective valve protection. Additionally, supports can be included for vacuum or counter-pressure applications. These composite rupture discs also offer the capability for simultaneous protection from both pressure and vacuum. **Specifications:** - **Sizes:** Ranging from 1" (DN25) to 40" (DN1000) - **Materials:** Available in Stainless Steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, and Titanium - **Rupture Pressure:** Ranges from 0.5 to 5 bar g, depending on material and diameter - **Tolerance:** From +/- 5% to +/- 20% - **Temperature Range:** PTFE/PFA membrane can withstand temperatures of up to 265°C, with certain membranes enduring up to 480°C - **Operating Margin:** Up to 70% - **Fragmentation:** None (membrane only) - **Use Under Valve:** Yes - **Corrosion Resistance:** Good – can be enhanced with a PTFE membrane - **Linings:** Yes - **Container:** Mounted between flanges - **Rupture Sensor Options:** Electrical, Magnetic, Inductive, Optical - **PED Certification (CE Mark):** Available - **ATEX EX II 2 GD Certification:** Available For further inquiries, please download our Rupture Disc Request Form and send the completed document to sales@flowstar.co.uk. Secure your systems with FSDIFFA Forward Acting Rupture Discs—your reliable solution for pressure and vacuum management.

Introducing a high-quality replacement seal set for the Resideo Braukmann BA300 Class 4 Backflow Preventer RPZ Valve - Category 4. This essential component ensures optimal performance and reliability in your plumbing system.

Part Codes:

0904068, 0904069, 0904070, 0904071, 0904072

Features & Benefits

• Horizontal swing pattern for efficient operation
• Robust, high-quality bronze body ensures durability
• Metal-to-metal seat enhances sealing capabilities
• Fig. 47 is taper threaded conforming to BS EN 10226 ISO 7-1 (BS 21)
• Fig. 47.AT is ANSI threaded to B1.20.1 (Taper)

Specifications

• Compliant with BS 5154:1991
• Constructed from durable bronze
• Features horizontal swing pattern
• Threaded cover: Fig. 47 is taper threaded to BS EN 10226 ISO 7-1 (BS 21)
• Fig. 47.AT is ANSI threaded to B1.20.1 (Taper)
• Suitable for use with Group 2 Liquids

Pressure/Temperature Ratings

• Conforms to BS 5154 PN25 Series B
• Operating pressure of 25 bar between -10 to 100ºC
• Maximum pressure of 10.5 bar at 186ºC

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