Pneumatic Diaphragm Valve PP-H DIASTAR TenPlus FC

  Datasheet (PDF)

Manufactured by Georg Fischer, the PROGEF Standard DIASTAR TenPlus pneumatic diaphragm valve delivers dependable isolation and high-precision flow regulation in demanding industrial chemical and water treatment systems. Configured in Fail Safe to Close (FC) mode, it shuts the line automatically and immediately whenever the pneumatic control signal is lost, protecting the process and the downstream equipment.

The valve body is produced from beta polypropylene homopolymer (beta-PP-H) and supplied with metric SDR11 butt fusion spigots, giving a full 10 bar bidirectional working pressure across nominal diameters from d20 mm to d63 mm (DN15 to DN50). The spigot ends suit both heated tool butt fusion and clean infrared (IR) fusion, producing permanent, crevice-free joints inside demanding process piping.

The pneumatic actuator is built from glass-fibre reinforced polypropylene (PPGF) for external chemical resistance against aggressive atmospheres and splashes of corrosive media. Inside the compact housing, a preloaded galvanised steel spring pack develops the closing thrust against line pressure without any auxiliary air supply. A single central union nut secures the actuator to the valve body with no exposed body bolts, removing a corrosion path and speeding up inline inspection and diaphragm replacement.

The air supply ports rotate through 90 degrees for tidy tubing routing in tight pipe racks, while the integrated optical position indicator confirms the open or closed state at a glance on the plant floor. Specified with EPDM or PTFE/EPDM diaphragms, the DIASTAR TenPlus FC offers long cycle life, low maintenance and an optimised flow geometry that keeps pressure drop low. As an authorised Georg Fischer distributor, BigWeld supplies the complete PROGEF Standard valve line to factory-certified specifications.