Screwed bonnet Needle Valve

Update Date:2016-06-03     Pageviews:1543


Screwed bonnet needle valve


The Kp-lok® Fig N. NVFF3131EA1027 screwed bonnet needle valve series offers a general service valve of rugged design and construction. It is available in stainless steel to suit a wide range of services.

It is capable of withstanding high pressures (10,000 psig max) and high temperature.

This valve is typically used in a severe environment, high pressure sampling systems, high pressure shut down systems and test standards.


TheFig N. NVFF3131EA1027 screwed Needle Valves are available with a choice of stem tips:

Regulating: Used where some degree of flow control is required.

V-Stem: Standard stem tip used for general-purpose liquids and gases.

Non-Rotating: Typically used in high-cycle applications to extend valve life. It is designed to prevent galling between the seat and stem.

The Fig N. NVFF3131EA1027 Series designs have been tested for Proof and Burst

Every Fig N. NVFF3131EA1027 valve is factory tested with nitrogen at 1000 psi.

Maximum allowable leakage across the seat is 0.1 std cc/min.

Due to the varied service applications of the valve, packing adjustment may occasionally be necessary.

Packing is factory pre-adjusted to 1000 psig service.

Initial packing adjustment is recommended after installation and prior to start-up.

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