Pneumatic Diaphragm Valve PP-H DIASTAR Ten FO d20-d63 PN10

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The Georg Fischer PROGEF Standard DIASTAR Ten FO pneumatic diaphragm valve is engineered for process automation and precise media control in industrial piping systems across metric dimensions d20 to d63 (DN15 to DN50). Manufactured from high-grade isotactic polypropylene homopolymer beta-PP-H, this valve incorporates true union connections with SDR11 butt fusion spigots for seamless integration into metric pressure pipelines. Driven by a glass-fibre reinforced polypropylene (PPGF) pneumatic actuator configured in fail-safe-to-open (FO) operation, the unit guarantees maximum circuit safety by immediately opening upon loss of pilot air pressure, making it ideal for venting, cooling, or pressure relief circuits.

The valve body architecture features an advanced flow-optimised geometry providing double the flow capacity of previous generations, substantially reducing pressure drops across the piping network. Assembly integrity is maintained by a corrosion-resistant central housing nut that completely replaces traditional external metallic bolts, eliminating the hazard of bolt corrosion in aggressive chemical atmospheres and simplifying routine maintenance without removing the valve body from the line. The pneumatic interface includes air connections capable of rotating at 90 degrees intervals for flexible installation in tight pipe racks. Visual status is provided by an integrated optical position indicator.

Rated for a nominal pressure of 10 bar (PN10) across its full dimensional span, the DIASTAR Ten pneumatic valve is available with high-performance EPDM or PTFE/EPDM diaphragm options to ensure broad chemical compatibility with acids, bases, and industrial effluents. Designed for a 25-year operational service life under standard conditions, this beta-PP-H diaphragm valve delivers dependable shut-off and modulating characteristics in water treatment plants, chemical distribution systems, and industrial utility installations requiring rugged thermoplastic automation.