Pneumatic PP-H ball valve PROGEF Type 546 Pro DA

  Datasheet (PDF)

The Georg Fischer PROGEF Standard Type 546 Pro DA is an automated ball valve assembly for on-off flow control in chemical and industrial process lines. The body is moulded in beta-polypropylene homopolymer (beta-PP-H) as a true double union design, connecting to metric pipework by ISO socket fusion in diameters d16 to d110 (DN15-DN100). It is driven by a double-acting pneumatic actuator (PPA DA) housed in flame-retardant glass-fibre-reinforced polypropylene (PP-GF), which resists aggressive atmospheres, chemical splash and plant washdowns.

Sealing is by virgin PTFE ball seats carried on elastomeric backing cushions in EPDM or FKM. The backing rings compensate for thermal expansion and progressive seat wear, holding leak-tightness to ISO 9393-2 and EN 12266 (leak rate A) across the full nominal pressure of 10 bar (PN10) at 20 degrees. The stem incorporates a predetermined breaking point, so over-torque under extreme conditions cannot release media to the outside, protecting personnel and adjacent instrumentation.

The rack-and-pinion drive operates from a nominal control pressure of 5.6 bar and carries a VDI/VDE 3845 NAMUR interface, so pilot solenoid valves, positioners and electrical feedback switchboxes mount directly without adapter brackets. A visual position indicator gives local open/closed status, while stainless steel threaded inserts in the valve base allow rigid, vibration-resistant fixing to pipe supports or structural frames. Face-to-face z-dimensions match the earlier Type 546 generation, so replacements and retrofits require no change to existing pipe spools.

Typical duties include water and wastewater treatment, effluent neutralisation and chemical transfer within PROGEF Standard PP piping systems, designed for a 25-year operating life with water at 20 degrees. The valve is supplied with EPDM or FKM seals in socket fusion sizes from 16 mm to 110 mm and integrates with PROGEF Standard pipes and socket fusion fittings rated SDR 11 (PN10).