PP-H Ball valve type 546 Pro FC

  Datasheet (PDF)

The Georg Fischer PROGEF Standard Type 546 Pro pneumatically actuated ball valve provides automated shutoff for demanding industrial process media and chemical distribution lines. Engineered with metric ISO socket fusion connections from d16 up to d63 mm, this fail-safe-to-close (FC) assembly operates up to 10 bar at 20 degrees Celsius. BigWeld supplies this high-performance valve as an authorised Georg Fischer distributor for advanced industrial installations across Europe.

Technical specifications

The assembly combines a true double-union valve body with a robust PPA pneumatic actuator engineered for rapid and reliable fail-safe operation. In the event of compressed air loss, heavy-duty return springs immediately close the valve to protect downstream equipment and process media.

• Actuator configuration: Pneumatic PPA spring-return fail-safe-to-close (FC) mechanism.
• Nominal pressure: 10 bar (PN10) water rating at 20 degrees Celsius with a 25-year service life.
• Control interface: Standardised NAMUR accessory interface per VDI/VDE 3845 for solenoid valves and position sensors.
• Manual operation: Integrated emergency manual override lever with optical position indicator.
• Tightness class: Zero-leakage shutoff complying with EN 12266 and ISO 9393-2 leak rate A.
• Stem safety: Engineered safety stem featuring a predetermined shear point preventing external leakage.

Materials and standards

The valve body and end connectors are manufactured from high-grade isotactic beta-polypropylene homopolymer (beta-PP-H) for exceptional chemical resistance. The actuator housing is built from flame-retardant glass-fibre reinforced polypropylene (PP-GF) to withstand corrosive ambient atmospheres.

Internal fluid isolation is maintained by pure PTFE ball seats supported by elastomeric backing cushions in EPDM or FKM. These energized seals guarantee low operating torque and long operational endurance even when conveying aggressive acids, alkalis, and process chemicals. The entire assembly meets ISO standards for plastic industrial valves and complies with international quality requirements.

Installation and jointing

The valve integrates into piping networks through metric socket fusion joints, forming homogeneous, permanent weld connections. True double-union ends allow simple inline servicing or actuator maintenance without cutting or dismantling adjacent pipe runs.

Integrated stainless steel threaded inserts located in the base of the valve body allow direct, stress-free anchoring onto pipe brackets and KLIP-IT mounting supports. During installation, installers must observe correct socket fusion depth and temperature parameters using dedicated socket fusion tools to guarantee system integrity.