Pneumatic diaphragm valve type 605 PP-H d20 DN15 PN6

  Datasheet (PDF)

The Georg Fischer PROGEF Standard pneumatic diaphragm valve type 605 in metric size d20 (DN15) is designed for accurate flow regulation and bubble-tight isolation in chemical processing and water treatment piping systems. Manufactured from high-grade beta-polypropylene homopolymer (PP-H), the valve withstands aggressive process media and industrial effluents. Rated for PN6 (6 bar) service, it delivers a flow coefficient kv of 125 l/min at a differential pressure of 1 bar, combining low pressure losses with reliable throttling precision.

Built for challenging chemical atmospheres, the type 605 features a compact, all-plastic design with an actuator housing made from glass-fibre reinforced polypropylene (PP-GF). The assembly eliminates external metal screws, preventing corrosion from atmospheric chemical vapours. A threaded connection on the actuator housing allows fast, simplified maintenance and diaphragm replacement without special tools, while the pneumatic mechanism provides fast opening and closing cycles for automated systems.

The metric butt fusion spigots facilitate clean connection into metric piping via standard butt fusion or non-contact infrared (IR) fusion. Engineered for a 25-year service life in water applications at 20 degrees Celsius, the valve is configurable in fail-safe close (FC), fail-safe open (FO), and double-acting (DA) operating modes, utilizing resilient EPDM, FKM, or PTFE/EPDM diaphragms for broad chemical compatibility.

• Nominal dimensions: Metric pipe diameter d20 mm, nominal diameter DN15
• Pressure rating: PN6 (maximum operating pressure 6 bar)
• Body material: Isotactic beta-PP-H (polypropylene homopolymer)
• Actuator construction: Corrosion-free PP-GF housing without external metal screws
• Control modes: Fail close (FC), fail open (FO), double acting (DA)
• Diaphragm materials: Resilient EPDM, FKM, or PTFE/EPDM
• Flow capacity: Nominal kv value 125 l/min at delta p equal to 1 bar
• Jointing method: Metric butt fusion spigots compatible with IR fusion