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Branch Office: Mehta House, Relief Road, Ahmedabad 380001
Tel: +91 97732 78770 | Email: info@supremevalves.in | www.supremevalves.in
Primary Process Isolation Needle Valve for Instruments and Gauges
This datasheet covers instrument root needle valves in SS316 barstock for primary isolation of pressure gauges, transmitters, analysers, and sample points in process piping.
| Parameter | Specification |
|---|---|
| Size Range | 1/4" to 1" NPT or tube OD 6 mm to 25 mm |
| Pressure Rating | 6,000 PSI (standard), 10,000 PSI (high-pressure option) |
| Body Material | Solid SS316 barstock, one-piece machined |
| Valve Type | Needle valve, non-rotating tip |
| Needle Tip | SS316 hardened Vee-point, non-rotating |
| Seat Material | Integral SS316, matched-lapped |
| Temperature Range | -73°C to +538°C (graphite packing) |
| Connections | NPT male/female, BSPT, socket weld, tube compression |
| Bonnet | Threaded or union bonnet for in-line packing service |
| Handle | SS304 knurled handwheel standard; T-bar optional |
| Features | Non-rotating tip, blow-out proof stem, bonnet locking, panel mountable |
| Component | Material |
|---|---|
| Body | SS316 solid barstock, 100% volumetric ultrasonic tested, machined seat bore |
| Needle | SS316 hardened to 35 HRC, non-rotating Vee-point tip, matched-lapped to seat |
| Stem | SS316 anti-blow-out stem with ACME threads and retention collar |
| Packing | PTFE V-rings (standard) or graphite braided (high temperature) |
| Gland Nut | SS316 hex gland nut with smooth ACME threads to prevent galling |
| Bonnet | SS316 threaded or union bonnet for in-line packing replacement without removal from piping |
| Handle | SS304 knurled handwheel standard; aluminium T-bar for high-torque service |
| Test | Requirement |
|---|---|
| Test Standard | Hydrostatic 1.5x rated pressure per API 598 / MSS SP-99 |
| Certification | CE, ISO 9001, NACE MR0175 on request |
| Standard | Description |
|---|---|
| Design Standard | ASME B16.34 / MSS SP-99 |
The Instrument Root Valve -- Needle Type Barstock SS316 is designed, manufactured, and tested in accordance with applicable API / ASME / BS / ISO international standards. Compliance documentation and Material Test Certificates (EN 10204 3.1) are provided with every order.
Standard construction is carbon steel, stainless steel (CF8 / CF8M), and special alloy grades. Alternative and upgraded grades -- Duplex, Super Duplex, Inconel, Monel, Hastelloy, and NACE MR0175 trims for sour service -- are available on request.
It is offered in a range of sizes as per the technical specification with standard ANSI / ASME pressure classes (PN ratings on request). End connections include flanged (RF / RTJ), butt-weld, socket-weld, and screwed ends as per specification.
Yes. Supreme Valves India is an established exporter of industrial valves to Saudi Arabia (KSA), the UAE, Qatar, Kuwait, Oman, Bahrain, and across the Gulf. We provide sea-worthy export packing, EN 10204 3.1 / 3.2 certification, certificate of origin, and support for SABER / SASO conformity on KSA shipments.
Every valve undergoes hydrostatic shell and seat testing per API 598 / ISO 5208. Documentation includes EN 10204 3.1 MTC (3.2 on request), NDT reports, and fire-safe (API 607) or NACE MR0175 certification where applicable. Third-party inspection by TÜV, SGS, Bureau Veritas, or Lloyd's Register can be arranged.
Order quantities are flexible -- from single units for stocked items to bulk volumes for project requirements. Lead time depends on size, material, and quantity; please contact our team with your specification for a firm delivery schedule and quotation.