Three Decades in Severe Service

Oliver Valves Limited’s severe service needle valve was developed by Michael Oliver in 1979 in order to overcome two major shortfalls in needle valve design.

‘Pick-up’ or galling between the spindle tip and the seat of a valve can result in an unsatisfactory seal.  If this occurs then the valve has effectively reached the end of its service life. The pipeline to which the valve is connected has to be shut down in order to affect running repairs or replacement of the valve.

The Oliver solution, as offered in 1979 and still in production today, is to offer a non-rotating, anti galling tip as standard on all our needle valves. Simple interchangeablility of a range of tips gives a family of high quality instrument valves suitable for gas (soft tip), oil (hard tip), sour gas (NACE specification tip), metering of fluids (long nose tip), or even a satellite tip.

Oliver Valves Limited’s pressure dynamic self-adjusting spindle seal addresses the traditional problem of valve spindle leakage by ensuring that as the pressure on the seal increases, the seal grip also increases in direct proportion. The higher the pressure, the better the seal.

Our roller burnished spindle with rolled threads gives low torque operation making the valve easily hand operable across its pressure range.  A choice of spindle seal gives a wide range of temperature choices.

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