Pressure Retaining Valve PROGEF Type V86 PP-H d75-110

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The Georg Fischer PROGEF Standard Type V86 pressure retaining valve in beta polypropylene homopolymer (beta-PP-H) provides precise inline upstream pressure control for demanding industrial process distribution systems. Engineered with metric spigot ends suitable for butt fusion and infrared (IR) fusion jointing across dimensions d75, d90, and d110 mm, this valve maintains a constant system pressure upstream, dampens pulsations from metering pumps, and protects equipment against transient pressure surges. When system pressure exceeds the preset spring value, the spring-loaded piston assembly actuates smoothly to release excess fluid downstream, ensuring process stability in chemical distribution, industrial effluent handling, and advanced water treatment installations.

Manufactured by Georg Fischer from high-grade isotactic beta-PP-H in strict compliance with EN ISO 15494, the valve body delivers high long-term hydrostatic strength, exceptional stiffness, and robust chemical resistance against aggressive acids, alkalis, salts, and solvents. Designed for a 25-year operational life with water at 20 degrees Celsius, the Type V86 valve operates reliably up to a nominal pressure rating of 6 bar. The internal mechanism features chemically resistant seals, offering selectable variants in EPDM or PTFE to meet aggressive process compatibility requirements. Its flow-optimised geometry minimises flow resistance and turbulence when discharging fluid into the downstream circuit.

With its integrated butt fusion spigots, the valve integrates directly into PROGEF Standard SDR 11 and SDR 17.6 piping networks using butt fusion or contactless infrared (IR) machines. This contactless welding ensures smooth, uniform weld beads with minimal bead profile, preventing fluid entrapment and contamination risks in pure water and chemical lines. Suitable for installation in horizontal or vertical pipelines, the valve features an easily accessible adjustment mechanism to calibrate set pressure accurately. BigWeld supplies the complete Georg Fischer industrial thermoplastic range, ensuring full component compatibility and verified industrial piping performance across Europe.