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New Product: GF Piping’s new butterfly valve suits corrosive environments |
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Sep 20, 2006 at 04:17 PM |
 Product 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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Critical Components 
