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The NVS6000 High Pressure
Needle Valve incorporates state-of-the-art technology, in a simple
but rugged design which can be advantageously used for most high
pressure and high temperature liquid gas systems. Typical
applications are in Steam / Water / Gas Sampling systems. High
Pressure Test Rigs for testing critical components for the Nuclear /
Space industry and Hydraulic Systems.
Salient features of design and operation:
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Forged body with integral
stuffing box eliminates bonnet gasket joint which is the main source
of leakage. The external bonnet serves only for support.
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Unique non-rotating
spindle / plug design. Non-rotation of valve spindle is achieved by
a two piece spindle joined by a rugged differential mechanism. this
design guarantees long seat life as grinding between plug and seat
is prevented. Packing life is also extended due to lower friction in
the stuffing box.
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The spindle thread does
not come in contact with the medium. The rotating parts can be
adequately lubricated to prevent thread seizure.
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Preformed, pure graphite
packing rings and roller burnished spindle face ensure excellent
stuffing box tightness under extreme pressures / temperatures.
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Easy on-line disassembly
is possible.
Specifications
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