Less Wear, Better Profitability

Type 578 Butterfly Valve

01.05.2015 GF Piping Systems is showcasing its type 578 butterfly valves in the dimensions DN50 to DN300. They are especially suitable for worldwide use in chemical and water treatment applications.

Type 578 Butterfly Valve

Compared to metal valves of the same dimensions, the butterfly valves save up to 50 percent weight (Picture: GF Piping Systems)

The glass-fiber-reinforced plastic lug housing confers high stability, low weight and good corrosion resistance. Compared to metal valves of the same dimensions, the butterfly valves save up to 50 percent weight. Stainless steel (1.4408) threaded lug inserts ensure that the valve can be centered between the flanges. The combination of materials provides strength and optimized weight. This is particularly noticeable during transportation as well as in installation and maintenance. Furthermore the valves are corrosion and UV resistant. For the device the manufacturer relies on the double eccentric operating principle. The double eccentricity combined with the pressure support of the profile seal leads to a 50 percent lower actuation torque compared to centric valves. The disc does not touch the seal in the open position. This principle significantly reduces the contact surfaces between medium and elastomers. This has two important positive effects: a steady operation torque ensuring safe opening and closing and less wear and tear for a longer service life. This is particularly important for applications in critical areas such as in the chemical process industry. The higher operating and process safety and good chemical resistance lead to better profitability. The butterfly valves are available in PVC-U, PVC-C, ABS, PP-H and PVDF in the dimensions DN50 / 2“ up to DN300 / 12“. Seals are available in EPDM, FPM or PTFE.


Facts For Decision-Makers:

  • DN50 to DN300
  • corrosion resistant
  • safe opening

Achema 2015 Hall 8.0 – E64