All-Plastic Lug Style Butterfly Valve offers extended service.

Press Release Summary:

Available in manual, electric, and pneumatic actuated versions, Type 578 valve offers corrosion resistance and extended service life expectancy. Construction consists of glass-filled polypropylene (PP) outer housing with overmolded SS316 lugs, and double eccentric design allows disc to completely disengage from disc seal during operation to reduce friction and component wear. Sizes are available from 2–12 in., and non-wetted shaft provides protection against leak out and corrosion.

Original Press Release:

New All-Plastic Lug Style Butterfly Valve Extends Service Life

Robust, high-quality valve solution for applications requiring an all plastic system

IRVINE, Calif. -- In response to market needs for an all plastic lug style butterfly valve, GF Piping Systems has introduced the second generation 5-series Lug Style Butterfly Valves. The Type 578 valve offers excellent corrosion resistance with long service life and is available in manual, electric and pneumatic actuated versions.

Constructed of a glass filled polypropylene (PP) outer housing with overmolded SS316 lugs, the 578 valve incorporates a unique "double eccentric" design rather than the traditional (and often problematic) "boot style" design of other plastic lug style valves on the market. The industry tested double eccentric design allows the disc to completely disengage from the disc seal during operation, reducing friction and component wear to provide longer service life without sacrificing the valve's sealing ability.

Other key benefits associated with the special eccentric principle is that it requires only half the operating torque (over boot styles) and is not susceptible to elastomer swelling over time. The truly non-wetted shaft provides maximum protection against leak out and shaft corrosion. These excellent performance characertics make it exceptionally well suited for applications in aquatic life support, water parks/pools, chemical process and water treatment markets.

"The valve's unique benefits provided by the double eccentric principle make it a truly unique offering on the plastics market," says Jeff Sixsmith, Product Manager for Valves and Actuation for GF Piping Systems. "Many customers require an all plastic system, especially in life support applications. The new valve will open up many new opportunities for us in these types of markets."

The new valve is available in PVC, CPVC, PP, ABS and PVDF in sizes from 2 to 12 inches with seal material choices of EPDM, FPM and PTFE.

To showcase the new 578 valve, the company installed a giant 48" valve model that measures 12 feet tall with a 10 foot long handle atop a custom-built 5'x5'x6', 1,100 gallon saltwater aquarium in its market segment demonstration room. The impressive aquarium was featured on the television show "Tanked," where customers can view the new valve along with many other company products in a life-like setting.

The giant 48" diameter 578 Lug Style Butterfly Valve model measures 12-feet tall with a 10-foot long handle. It is mounted atop the company's custom built 1,100 gallon saltwater aquarium in the product demonstration room that shows many of its products in action.

For more information contact GF Piping Systems at toll Free (800) 854-4090; e-mail:; Web:

About GF Piping Systems

GF Piping Systems supplies a full range of plastic pipe, fittings, valves, actuators, rotameters, fusion machines, secondary containment, heat exchangers, custom products, and sensors and instrumentation for industrial process control. For further information, please contact: GF Piping Systems, 9271 Jeronimo, Irvine, CA 92618-1904 USA; Toll Free (800) 854-4090, Fax (714) 731-6923; e-mail:; Web:

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