Blackhall Engineering'Larner-Johnson' Flow Control Valve

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In 1989 we purchased the sole manufacturing and intellectual rights for the Blakeborough 'Larner-Johnson' Flow Control Valve from the Hopkinsons Group.

The valve was originally developed for use on hydroelectric power plants in the U.S.A. where it pioneered the application of the needle valve principal to the problems of flow control in pipelines and conduits.

Its principal application is the control of fluids, notably the water supply field, where the pressures and control requirements bring its advantages into full play. There is also a regular demand from power stations and the petroleum industry.