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walton ENGINEERING CO. LTD.

The valve body is provided with 3 equi-spaced ports extending to flanged connections. A rotor operates over two of the ports to give flows varying from ‘full re-circulation/no overboard flow’ to ‘full overboard flow/no re-circulation’. The rotor is mounted upon a shaft extending through the front cover of the valve. This cover also carries the valve actuator on an integral bracket.

A lever secured to the shaft engages with a spherically ended drive pin. The drive pin is clamped into the control block and onto the control rod.

At one side of the bracket formed on the front cover is mounted a gas cylinder which contains a stainless steel edge welded bellows. The bellows with welded end fittings together with ‘O’ ring forms a 100% gas seal.

The whole internal assembly, actuator, etc. can be withdrawn by removing the front cover nuts and without disturbing the main pipe connections.

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