Screwed Bonnet Needle Valve

Screwed Bonnet Needle Valve

Screwed Bonnet Needle Valve

An Instrument Needle Valve uses a tapered pin to gradually open a space for fine control of flow. The flow can be controlled and regulated with the use of a spindle. A needle valve has a relatively small orifice with a long, tapered seat, and a needle-shaped plunger on the end of a screw, which exactly fits the seat.

As the screw is turned and the plunger retracted, flow between the seat and the plunger is possible; however, until the plunger is completely retracted the fluid flow is significantly impeded. Since it takes many turns of the fine-threaded screw to retract the plunger, precise regulation of the flow rate is possible.

Screwed Bonnet Needle Valve

1). Screwed Bonnet Design Double Ferrule Tube Ends

Test Pressure : @ 250C Room Temperature

Hydrostatic : Body – 620 bar

Seat – 415 bar

Pneumatic : Seat – 40 bar

Gland Packing : PTFE : Standard

Graphoil : Temeperature Above 1800C

Material : A 105, A479 304,A 479 316,

A 182 GR F 316, Monel, Hastelloy

Finish : CS Zinc Plated. SS Natural

2). Screwed Bonnet Design Female Ends

Test Pressure : @ 250C Room Temperature

Hydrostatic : Body – 620 bar

Seat – 415 bar

Pneumatic : Seat – 40 bar

Gland Packing : PTFE : Standard

Graphoil : Temeperature Above 1800C

Material : A 105, A479 304,A 479 316,

A 182 GR F 316, Monel, Hastelloy

Finish : CS Zinc Plated. SS Natural

3). Screwed Bonnet Design male X Female Ends

Test Pressure : @ 250C Room Temperature

Hydrostatic : Body – 620 bar

Seat – 415 bar

Pneumatic : Seat – 40 bar

Gland Packing : PTFE : Standard

Graphoil : Temeperature Above 1800C

Material : A 105, A479 304,A 479 316,

A 182 GR F 316, Monel, Hastelloy

Finish : CS Zinc Plated. SS Natural

Below listed are the related files that can be downloaded to you PC. All the files are in PDF format.