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Function:

Plug Valve is the oldest known kind of valve. It is a commend assumption that the plug in the plug valve is taper (conic) . The fact is that there is a huge verity of the inside construction of a plug valve.

Operation:

• The plug valve is a 90 deg (quarter turn) operated valve.

• The main purpose of a plug valve is isolation, and it will than      either be fully open or fully closed

• The secondary function of the valve is regulation which is      achived by tapering the valve bore. This will reduce the aperture of the      plug.

• Range of application:

• Oil production
• Water injection
• Mud systems.
• Shut down valve on production
• Water injection and test manifold
• Between valve tree and separator.
• Change-over valve between filters.
• Meetering stations

Options

• Cylindrical

• Cylindrical without seats (integrated sets in the valve body)

• Full bore “through conduit”

• Venturi with reduced bore

Maintenance:

• As a rule plug valves are expected to be maintenance free,      however for some valves maintenance is highly required to secure operation      and avoid damage.