Straightway taper twin plug valve

In most sizes and pressure classes the face to face dimensions of this plug valve are the same as a single plug valve or ball valve.

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The Christensen lubricated twin plug valve is designed for use in critical services where, verifiable tight shutoff is demanded.

The design of the Twin Plug Valve is very compact with focus on space and weight savings. Furthermore, the design has far less possible leak paths compared to the conventional Double Block & Bleed Valve assemblies.

As a secondary seal, the valve is provided with a lubrication system which allows feeding a special lubricant into the valve while the valve is in operation. Besides, sealing, the purpose of the lubricant is to protect the internals of the valve against corrosion and wear as well as reducing the valve torque.

In most sizes and pressure classes the face to face dimensions of this valve are the same as a single plug valve or ball valve.

A new feature has been added to protect against possible overpressure in the inner cavities (between, in and below the two plugs), this feature is a Patented Pressure Relief Bore. This feature is a bore going from the body sealing surface against the diaphragm, to the port outside of each plug. While operating normally, the bore is kept closed by the pressure of the bottom cover, obtained by studs and nuts, against the diaphragms.

A bleed port is available in configuration as per customer preference. This port allows access to verify the sealing of the valve itself. Any leakage past the first plug would be detected via the bleed port