Needle Valves Β· Integral Bonnet Needle Valves
SS316 Needle Valves
Stainless steel needle valves in SS304/SS316 executions with CF3M cast bodies: fine-thread needle control of small flows in instrument, meter and gauge lines, sized 1/4 in to 1 in with BSP/BSPT/NPT/BSPP end connections and rated to 6000 psi. The manufacturer lists a full wetted-parts schedule (SS316 stem and gland nut, PTFE packing, CF3M body and bonnet) plus a per-size Cv and media-pressure table.
Part of the Integral Bonnet Needle Valves family
Last updated: 2026-11
Specifications
| size range | 1/4" to 1" (Female/Female BSP and BSPT), 3/8" to 1" (Female/Female NPT), 1/4" to 1/2" (Male/Female BSPP) |
|---|---|
| temperature range | -20C to 230C |
| operator | Bar, hand operated |
| pressure class | 6000 PSI |
| body materials | ASTM A-351 GR. CF3M |
| bonnet material | ASTM A-351 GR. CF3M |
| stem material | SS316 |
| packing material | TEFLON |
Application & selection guidance
Pick by end connection and Cv first: the page lists Cv 0.4 (1/4-3/8 in) to 2.5 (1 in) and end styles from female BSP/BSPT/NPT to male/female BSPP. SS304 executions are the economical corrosion pick; SS316/CF3M wins in chloride duty. The -20 to 230 C window covers instrument-air through hot-oil indication duty.
Frequently asked questions
What sizes and connections does this needle valve execution cover?
1/4" to 1" female/female BSP and BSPT, 3/8" to 1" female/female NPT and 1/4" to 1/2" male/female BSPP per the specification block, bar or hand operated, rated 6000 psi with a media-pressure table up to 408 bar.
What are the wetted materials?
Body and bonnet ASTM A-351 GR. CF3M, stem and gland nut SS316, PTFE packing, with SS304 handle and set screw - a full stainless execution aimed at corrosive and instrument service between -20 and 230 C.
How do I size the valve?
Use the page Cv table: 0.4 for 1/4"-3/8", 0.6 for 1/2", 1.6 for 3/4" and 2.5 for 1", against the required flow at up to 408 bar media pressure. Needle valves throttle precisely rather than passing full line flow, so Cv and end connection - not line size alone - drive selection.
Ordering & documentation
Documents
Ask for the documentation set you need with the inquiry β typical items for this execution (material certificates, test reports to the listed inspection standard, dimensional drawings) are confirmed and supplied with the quotation.
Quotation
A quotation-ready inquiry states: nominal size and pressure rating, body and seat material preference, end connection, operation, and the service medium with temperature. Typical values on this page are benchmark reference ranges; the binding values are confirmed at quotation.
Sample & supply
Supply terms, order quantities and lead time are agreed per order β state the destination country and required schedule with the inquiry.
Storage & shipping
Store valves with seats and seals protected from UV, ozone and deformation, keep end-face protectors on until installation, and for elastomer- or PTFE-seated executions avoid prolonged outdoor storage β seat compounds age fastest in direct sunlight and freezing conditions.
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