PP-H ball valve Type 542 butt fusion SDR11 PN10

  Datasheet (PDF)

The Georg Fischer PROGEF Standard Type 542 ball valve in PP-H (polypropylene homopolymer) is engineered for demanding industrial process lines, chemical dosing systems, and water treatment facilities. Supplied across Europe by BigWeld as an authorised Georg Fischer distributor, this manual shut-off valve delivers dependable bidirectional isolation for aggressive chemicals. Its metric SDR11 butt fusion spigots (d20 to d63 mm) allow seamless heat-fusion joining into PN10 PROGEF piping networks using standard butt fusion or infrared (IR) fusion machinery.

Manufactured from high-grade beta-PP-H (β-PP-H), the valve body demonstrates outstanding chemical resistance against inorganic acids, alkalis, and salts, along with high thermal stability and impact strength. The internal sealing arrangement combines low-friction PTFE ball seats with elastomeric backing seals in EPDM or FKM, achieving bubble-tight shut-off in compliance with EN 12266 and ISO 9393-2 leak rate A standards. The self-adjusting seat design maintains low, uniform operating torque across the 25-year design service life at 20 degrees Celsius.

A key engineering advantage of the Type 542 is its true double union architecture. Threaded union nuts permit rapid radial installation or removal of the central valve body without cutting the pipe or displacing adjacent upstream and downstream pipe sections. Metric spigots ensure precise axial alignment during butt fusion welding. Manual operation is carried out via an ergonomic, glass-fibre reinforced lever with integrated position indication, built to withstand mechanical stress and chemical exposure in plant environments.

Designed for severe industrial service, the Type 542 ball valve carries a nominal pressure rating of PN10 (10 bar) across its complete dimensional range. BigWeld supplies the full Georg Fischer PROGEF portfolio with comprehensive technical documentation, providing process engineers and piping installers with reliable flow control equipment that guarantees joint integrity where metallic materials fail.