Lubricated Plug Valves operate in a similar way to
Ball Valves but the closing member is a
quarter-turn taper or parallel plug. Tight
shut-off is obtained by the lubricant that is
injected onto the seating surface of the plug via a
supply hole in the top of the valve stem. This can
be applied at any time using a manual screw or a
hand-operated pump.
Various special lubricants are available according to the service that the valve is handling and, because the seal is constantly renewable, 100% leak-tightness in both directions can be achieved over a long period in service.
A variety of materials and end connections are available in sizes up to 36" (900 mm) as well as multiport designs.
Various special lubricants are available according to the service that the valve is handling and, because the seal is constantly renewable, 100% leak-tightness in both directions can be achieved over a long period in service.
A variety of materials and end connections are available in sizes up to 36" (900 mm) as well as multiport designs.
Lubricated Plug Valve
