PP-H diaphragm valve DIASTAR Ten DA d20-63

  Datasheet (PDF)

The Georg Fischer PROGEF Standard DIASTAR Ten DA is a pneumatically actuated, double-acting diaphragm valve for flow control and throttling of aggressive chemical media in industrial piping systems. The body is moulded in beta polypropylene homopolymer (beta-PP-H) and the actuator housing in glass-fibre reinforced polypropylene (PP-GF), with metric sizes from d20 to d63 (DN15 to DN50) at a nominal pressure of 10 bar (PN10). Typical duties include water, wastewater and effluent treatment, as well as a broad range of chemical process applications.

The true double union construction with metric socket fusion ends allows the valve to be mounted radially and removed for servicing without dismantling the adjacent pipe runs. A single central union housing nut replaces the conventional metal body bolts, so no exposed metallic fasteners remain to corrode in aggressive atmospheres, which directly extends service life. The optimised internal geometry delivers up to double the flow coefficient of the previous generation, reducing pressure loss across the valve.

Double-acting actuation uses pilot air for both the opening and the closing stroke, giving firm seating and precise, repeatable positioning for throttling duties. The actuator carries an integrated optical position indicator for immediate visual status checks on site, and the air connection can be rotated in 90 degrees increments for compact pneumatic tubing routing. Diaphragms are available in EPDM or in PTFE with an EPDM supporting diaphragm, covering acids, bases and salt solutions.

• Material: beta-PP-H body, PP-GF actuator housing
• Dimensions: d20 to d63 (DN15 to DN50)
• Nominal pressure: PN10 (10 bar)
• Connection: metric socket fusion, true double union
• Actuation: pneumatic, double-acting
• Diaphragm: EPDM or PTFE/EPDM

PROGEF Standard components are designed for a 25-year operational life with water at 20 degrees. As an authorised Georg Fischer distributor, BigWeld supplies the complete PROGEF Standard piping, fittings, valve and automation portfolio across Europe.