Pneumatic diaphragm valve PP-H Type 604 d20 DN15 PN6

  Datasheet (PDF)

The Georg Fischer PROGEF Standard Type 604 pneumatic diaphragm valve d20 DN15 is an engineered thermoplastic process valve developed for industrial fluid automation, chemical processing, and water treatment systems. Manufactured from high-grade beta polypropylene homopolymer (beta-PP-H), the valve body features integrated metric socket fusion union ends that facilitate rapid radial assembly and disassembly directly within piping lines without exposing metal fasteners to aggressive media or external atmospheric corrosion.

Equipped with a compact actuator housing molded from glass-fibre reinforced polypropylene (PPGF), the Type 604 unit delivers fast cycle times and dependable pneumatic operation in demanding environments. The actuator is configurable in three standard operational modes: fail-safe to close (FC) utilizing an internal galvanized steel spring assembly, fail-safe to open (FO), and double-acting (DA) pneumatic control. Pneumatic pilot lines connect via a standardized G 1/4" port, providing seamless compatibility with industrial solenoid pilot valves and pneumatic control manifolds.

Engineered to operate at nominal line pressures up to PN6 (6 bar), this compact diaphragm valve achieves an optimized flow coefficient Kv of 125 l/min at a differential pressure of delta p = 1 bar. The linear flow characteristics and optimized weir body geometry minimize turbulence and prevent media stagnation. Process sealing is configured with interchangeable diaphragm options including EPDM, FKM, or PTFE with an elastomeric EPDM backing diaphragm, ensuring superior chemical resistance against acids, alkalis, and solvent effluents across varied operating temperatures.

As an authorised Georg Fischer distributor, BigWeld supplies the PROGEF Type 604 pneumatic diaphragm valve for installations designed for a 25-year service life in process piping networks. The union end design simplifies scheduled maintenance and diaphragm inspection, maintaining plant integrity across chemical distribution, microelectronics, surface finishing, and effluent neutralisation skids.