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New Product: GF Piping‚??s new butterfly valve suits corrosive environments

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GFProduct Briefing Outline: GF Piping has announced the availability of a new Type ‘567/568 Butterfly Valve.'  The new corrosion-resistant valve incorporates several new design features that result in long service life, high safety, excellent sealing capabilities, and modular flexibility. Waste water and electroplating applications are of particular application uses, according to the company.

Problem: The Type 567/568 features a unique sealing technology, say the company, that enhances the functionality of the valve while eliminating the need for additional gasket seals.  Shaft seals incorporate a double o-ring to protect against external leakage.  A disk seal replaces the traditional rubber liner to allow the disk to completely disengage from the disk seal upon valve opening.  This feature further reduces friction and improves wear capabilities.

Solution: The Type 567/568 Valve series features a double eccentric disk design typically found only in high-end metallic butterfly valves, the company claims.  This double eccentricity reduces seal friction and improves seal wear characteristics, resulting in longer service life, minimal maintenance and better protection against pressure surges.  The double eccentric design also lowers the torque required to operate the valve, making for easy manual operation and use of smaller actuators at a significantly reduced cost. The disk seal design also incorporates a cross-sectional profile that keeps the seal mechanically retained in the valve body.  A specially engineered body seal features a Q-shaped O-ring that eliminates the need for flat gaskets and is compatible with any flange adaptor design, including those with serrated faces. The lockable hand lever also features a 5 degree ratchet setting with six engagement teeth that ensures precise and safe positioning of the lever and eliminates incidental movement or damage from accidentally bumping the handle.
 
Applications: Corrosive environments such as waste water and electroplating.

Platform: The new butterfly valve offers a modular design with choice of glass filled polypropylene wafer body (Type 567), or epoxy coated iron lug body (Type 568).  In either style, the wetted inner body, plus the disk and bearings, are made of the same material as the corresponding pipe material for improved corrosion and chemical resistance.  The inner body, disks, and bearings are available in PVC, CPVC, ABS, Beta PP (polypropylene) and SYGEF® PVDF (polyvinylidene) materials. The Type 567/568 Butterfly Valve is available in sizes 2" to 8" (d63 to d225) and is offered with a variety of modular components.

Availability: June 2006 onwards.

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