Technical Datasheet -- Inline Process Sampling Valve -- Needle Type SS316

Inline Process Sampling Valve -- Needle Type SS316

High-Pressure Needle Sampling Valve for Representative Process and Analyser Extraction

Document No.SV-DS-SPC-007

RevisionRev A

DateMay 2026

ManufacturerSupreme Valves India, Ahmedabad, Gujarat, India

This datasheet covers inline needle-type sampling valves in SS316 forged barstock for representative sample extraction under full pressure in process analyser, laboratory, and custody transfer applications.

Technical Specifications

Parameter	Specification
Valve Size Range	DN8 to DN25 (1/4" to 1")
Pressure Rating	PN100 / Class 600 / Class 1500 / Class 2500
Body Material	CF8M (SS316) forged barstock body, no porosity
Needle Material	SS316 hardened non-rotating needle tip, 35 HRC
Seat Material	Integral SS316 lapped seat, matched to needle tip
Stem Material	SS316 rising stem with ACME threads and anti-blow-out collar
Packing	PTFE/graphite packing with live-loading gland
Handwheel	SS304 knurled handwheel or T-bar for high-torque operation
Gland Nut	SS316 hex gland nut with smooth threads to prevent galling
Temperature Range	-29°C to +425°C (SS316 with graphite packing)
End Connections	NPT female, BSPT, socket weld, tube OD compression (Swagelok compatible)
Features	Non-rotating needle, bubble-tight shutoff, purge connection, panel mountable, blow-out proof stem

Materials of Construction

Component	Material
Body	CF8M (SS316) forged barstock body, machined from solid, 100% volumetric NDE by ultrasonic
Needle	SS316 hardened non-rotating needle tip, cold-worked and aged to 35 HRC for wear resistance
Seat	Integral SS316 lapped seat, precision matched to needle tip for bubble-tight shutoff
Stem	SS316 rising stem with precision ACME threads, anti-blow-out collar, and handwheel nut
Packing	PTFE/graphite V-ring packing with Belleville spring live-loading for constant compression
Handwheel	SS304 knurled handwheel for fingertip control; T-bar handle for high-pressure torque
Gland Nut	SS316 hex gland nut with rolled threads to prevent galling and ensure smooth adjustment

Testing & Inspection

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

Applicable Standards

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

Notes

Needle valves are intended for low-flow sampling 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.