3-Way Ball Valve Type 543 Pro ABS Horizontal d16-d63

  Datasheet (PDF)

The Georg Fischer (GF Piping Systems) Type 543 Pro ABS three-way horizontal ball valve is engineered for diverting, mixing and distributing fluids in industrial piping networks. Operating at a nominal pressure of PN10 (10 bar at 20 degrees C), this metric series covers diameters from d16 (DN10) to d63 (DN50). Built with solvent cement socket connections and an impact-resistant ABS body, it provides reliable flow control for chilled water and water treatment applications.

Technical specifications

The Type 543 Pro horizontal configuration features an open A-B-C flow scheme with a continuous 360-degree operating rotation to enable versatile diverting and mixing from a single valve body. Its standard lockable ergonomic hand lever secures operating positions against unintentional switching during critical industrial cycles.

• Pressure rating: Nominal PN10 working pressure (10 bar at 20 degrees C) throughout the entire d16 to d63 range.
• Connection type: Metric solvent cement sockets for homogeneous jointing from d16 (DN10) up to d63 (DN50).
• Port configuration: Horizontal three-way design with full 360-degree rotation and A-B-C flow pattern.
• Sealing system: Inert PTFE ball seat combined with high-grade EPDM backing seals for low operating torque.
• Mounting interface: Integrated stainless steel threaded inserts for direct bracket mounting without pipe strain.

Dimensional compatibility with the Georg Fischer Type 546 platform ensures matching face-to-face dimensions, union nut threads and valve ends. This allows direct unit replacement or retrofitting into existing installations without repiping. The standardized top flange also accepts electrical position indicators as well as pneumatic and electric actuators.

Materials and standards

Constructed from high-grade acrylonitrile butadiene styrene (ABS) in RAL 7001 gravel grey, the valve body maintains high impact strength and ductility even under low operating temperatures. The internal combination of pure PTFE ball seats and robust EPDM elastomer gaskets guarantees bubble-tight shut-off and chemical endurance over long service lives.

ABS is especially suited for secondary refrigeration and chilled water distribution where conventional plastics become brittle. Stainless steel threaded inserts moulded directly into the base of the housing absorb mechanical pipe stresses and secure the assembly to structural supports. BigWeld is an authorised Georg Fischer distributor, supplying industrial piping systems across Europe.

Applications

This three-way ABS ball valve is specifically developed for building services, chilled water loops, industrial cooling installations and municipal water treatment plants. Its robust thermoplastic design prevents corrosion and encrustation in demanding liquid transport systems.

Common deployments include mixing circuits in cooling towers, chilled water distribution in heating, ventilation and air conditioning (HVAC) infrastructure, potable water networks, and marine systems. It provides dependable performance across secondary refrigeration loops without thermal degradation.