PP-H Diaphragm Valve DIASTAR TenPlus FC

  Datasheet (PDF)

Georg Fischer PROGEF Standard DIASTAR TenPlus FC pneumatic diaphragm valves are engineered for bi-directional isolation and precision throttling of aggressive chemical media, high-purity fluids, and industrial water. Built around an advanced flow-optimised valve body made from isotactic beta-polypropylene homopolymer (beta-PP-H), this compact valve platform delivers up to double the flow coefficient (Kv) of traditional weir-type designs. The construction drastically reduces turbulence, minimizes mechanical pressure loss across the line, and prevents media sedimentation, ensuring reliable performance in harsh industrial chemical processes.

Actuation is handled by a robust fail-safe-to-close (FC) pneumatic actuator housed in flame-retardant, glass-fibre reinforced polypropylene (PP-GF). Preloaded galvanised steel springs guarantee immediate shut-off and positive sealing in the event of pilot air loss. The actuator mechanism is coupled to the valve body via an innovative central union nut assembly, completely eliminating external metal bolts exposed to corrosive atmospheric conditions. Air control connections can be rotated through 90 degrees intervals to accommodate tight manifold spaces and streamline pneumatic tubing routes. An integrated optical position indicator provides continuous local visual verification of valve travel and status.

The valve features metric spigot ends designed for clean, high-integrity socket fusion jointing across dimensions d20 to d63 (DN15 to DN50), fully compliant with face-to-face dimensions according to EN 558. Rated for continuous operation at up to 10 bar (PN10) working pressure at 20 degrees Celsius, it accommodates durable diaphragm membranes in EPDM or PTFE with elastomeric backing. As an authorised Georg Fischer distributor, BigWeld supplies authentic PROGEF Standard thermoplastic valves engineered to integrate seamlessly into high-performance industrial piping networks.