Technical Datasheet -- High Pressure Needle Valve -- Forged Barstock SS316 10,000 PSI

High Pressure Needle Valve -- Forged Barstock SS316 10,000 PSI

Precision High-Pressure Isolation and Throttling Valve

Document No.SV-DS-SPC-001

RevisionRev A

DateMay 2026

ManufacturerSupreme Valves India, Ahmedabad, Gujarat, India

This datasheet covers forged barstock high-pressure needle valves for instrumentation, sampling, hydraulic, and chemical injection service rated to 10,000 PSI.

Parameter	Specification
Valve Size Range	DN6 to DN25 (1/4" to 1")
Pressure Rating	6,000 PSI (standard), 10,000 PSI (high-pressure option)
Body Material	Forged SS316 barstock, solid body, no porosity
Stem Material	SS316, hardened tip, non-rotating Vee-point or regulating tip
Seat Material	SS316, integral, matched-lapped to stem tip
Temperature Range	-73°C to +538°C (SS316 with graphite packing)
End Connections	NPT female, BSPT, socket weld, tube OD compression (Swagelok compatible)
Operation	Knurled handwheel (small sizes), T-bar wrench (large)
Panel Mount	Optional square body and panel nut for instrument panel installation
Flow Pattern	Straight, angle (90°), and cross (3-way) patterns available

Parameter

Specification

Valve Size Range

DN6 to DN25 (1/4" to 1")

Pressure Rating

6,000 PSI (standard), 10,000 PSI (high-pressure option)

Body Material

Forged SS316 barstock, solid body, no porosity

Stem Material

SS316, hardened tip, non-rotating Vee-point or regulating tip

Seat Material

SS316, integral, matched-lapped to stem tip

Temperature Range

-73°C to +538°C (SS316 with graphite packing)

End Connections

NPT female, BSPT, socket weld, tube OD compression (Swagelok compatible)

Operation

Knurled handwheel (small sizes), T-bar wrench (large)

Panel Mount

Optional square body and panel nut for instrument panel installation

Flow Pattern

Straight, angle (90°), and cross (3-way) patterns available

Component	Material
Body	Forged SS316 barstock, machined from solid, 100% volumetric NDE by ultrasonic
Stem	SS316, cold-worked and aged, tip hardened to 35 HRC for wear resistance
Seat	Integral SS316, precision lapped to stem tip for bubble-tight shutoff
Packing	Graphite braided rings with anti-extrusion SS316 end rings
Handle	SS304 knurled handwheel or aluminium T-bar for high-torque operation
Gland Nut	SS316 hex gland nut with smooth threads to prevent galling
Bonnet	Forged SS316, threaded or union bonnet for in-line packing replacement

Component

Material

Body

Forged SS316 barstock, machined from solid, 100% volumetric NDE by ultrasonic

Stem

SS316, cold-worked and aged, tip hardened to 35 HRC for wear resistance

Seat

Integral SS316, precision lapped to stem tip for bubble-tight shutoff

Packing

Graphite braided rings with anti-extrusion SS316 end rings

Handle

SS304 knurled handwheel or aluminium T-bar for high-torque operation

Gland Nut

SS316 hex gland nut with smooth threads to prevent galling

Bonnet

Forged SS316, threaded or union bonnet for in-line packing replacement

Test	Requirement
Test Standard	API 598 / MSS SP-99 hydrostatic test at 1.5x rated pressure
Certification	CE, ISO 9001, NACE MR0175 on request

Test

Requirement

Test Standard

API 598 / MSS SP-99 hydrostatic test at 1.5x rated pressure

Certification

CE, ISO 9001, NACE MR0175 on request

Standard	Description
Design Standard	ASME B16.34 / MSS SP-99

Standard

Description

Design Standard

ASME B16.34 / MSS SP-99

Notes

Needle valves are intended for low-flow throttling and isolation; not suitable for high-flow on/off duty where erosion can occur.
Non-rotating tip design is standard; specify rotating tip only if media contains abrasive particles that require self-cleaning action.
For sour gas service (H2S > 0.01 MPa partial pressure), select NACE MR0175 compliant material with hardness < 22 HRC.
Panel-mount version includes square body and lock nut; specify panel thickness at order for correct nut thread length.
Compression end fittings are Swagelok-compatible tube OD; specify tube OD and wall thickness for correct ferrule selection.