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Description
The WALWORTH Gas Service Plug valves were designed specially to give natural gas utility companies high quality carbon steel lubricated plug valves at a price comparable to cast iron gate valves with flanged ends.
The cast carbon steel body and ends have proved to be far superior to conventional cast iron gate valves in cases where gas lines have been subjected to ground shifting.
These WALWORTH plug valves incorporate a high strength cast iron plug. This plug is coated for long trouble-free life and low operating torque.
The valves are single gland construction employing two cap screws and packing arrangements.
Features- Sealant Fitting – fast sealant injection that can be removed under pressure. The system includes ball check valves that prevent back pressure and maintain pressure in the sealant cavity
- Balancing Spring - the mechanical spring type grade 304 Stainless Steel washer is under compression and holds the plug in an equalized pressure position, thus eliminating the possibility of plug taper lock
- Sealant Grooves - this system permits sealant injection while the valve is under full line pressure. WALWORTH recommends that the valves be lubricated, with the plug in the fully opened or fully closed position for optimum valve performance
- Open/Close Indicator - quarter turn stop collar also functions as an indicator of the plug`s position
- Diaphragm Gasket - ensures a complete sealing of the valve against any leakage
- Plug - WALWORTH plugs are designed with a specific coating material that reduces the coefficient of friction friction, making the valve operate with low torque
- Socket Weld Dimensions conform to ANSI/ASME B16.11
- Butt-weld Dimensions conform to ANSI/ASME B16.25
- Design as per API 6D
