Instrumentation needle valve

Parker Hannifin’s H-series half-inch instrumentation needle valve is designed to give plant engineers the means to improve reliability, and save both money and space, in process and instrumentation applications involving viscous and contaminated media.

The H-series needle valve is available in two forms: as either a discrete hand valve for controlling media flow, or integrated into a monoflange-style manifold for the safe ’double-block-and-bleed’ connection of instruments to process lines.

The large flow path of the half-inch H-series needle valve makes it much less prone to blockages or related problems when dealing with viscous and contaminated media. The new valve also offers a metal-to-metal seal that provides a bubble-tight shut-off mechanism and operation over a very wide temperature range of -55 to +538 °C in its standard stainless steel form.

The H-series valve has a bore size of 12.7 mm, with a Cv value of 2.6. In its standard form, the valve is fabricated from 316 stainless steel and is rated for operation at pressures up to 6000 psig. The metal to metal sealing of the new valve also meets the fire-safe requirements of ISO 10497.