Material & construction
Machined stainless body, tapered needle stem, seat, bonnet and adjustable stem packing.
WOG-191 / Ball and needle valves
Needle Valve
Fine flow adjustment and isolation in small-bore instrument and sampling lines.
| Reference port | 1/4-1 in NPT (nominal pipe designation) |
|---|---|
| RFQ pressure | 3,000-6,000 psi (20.68-41.37 MPa); vendor qualified |
| Material | 316 stainless; stem and packing duty selected |
| Duty | Instrumentation isolation and throttling |
Industry reference selections; ordered specification requires supplier confirmation.
View catalogue page 29 ↗Options & acceptance
Straight/angle pattern, hard/soft seat, packing and NPT end sizes.
Application & RFQ details
Specify bore or port pattern, seat/packing material and pressure-temperature rating. Valve body rating does not establish fire-safe or fugitive-emission qualification.
Standards & documents
Confirm material and pressure-temperature limits, dimensional interface and shell/seat test requirements. Certification requires exact-model evidence.
Packing
Protect connections, seat faces and operators. Carton or crate by size and weight; retain lot identification.
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