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Rising Stem Piston Gauge Isolation Valve with Low Pressure Drop
This datasheet covers gauge root piston valves in SS316 with rising stem and smooth bore for primary isolation of pressure gauges, dial gauges, and recorders in process plants.
| Parameter | Specification |
|---|---|
| Size Range | 1/2" to 1" NPT process x 1/2" NPT gauge connection |
| Pressure Rating | PN100 / Class 600 / 1,500 PSI |
| Body Material | SS316 forged barstock or investment cast CF8M |
| Valve Type | Rising stem piston plug valve |
| Plug Material | SS316 polished piston with ground seat |
| Seat Material | Integral SS316, matched-lapped to piston |
| Temperature Range | -29°C to +425°C (graphite packing) |
| Connections | NPT male/female process; 1/2" NPT female gauge |
| Bonnet | Union bonnet for in-line packing and plug replacement |
| Operation | Rising stem handwheel with position indicator |
| Features | Smooth bore low DP, rising stem, blow-out proof, union bonnet, gauge snubber option |
| Component | Material |
|---|---|
| Body | SS316 forged barstock or investment cast CF8M, machined cylinder bore and seat |
| Bonnet | SS316 union bonnet with smooth ACME threads and gasket groove |
| Piston | SS316 polished piston with ground cylindrical section and matched-lapped seat face |
| Seat | Integral SS316, precision lapped to piston for bubble-tight shutoff |
| Stem | SS316 rising stem with ACME threads, thrust bearing, and position indicator collar |
| Packing | Graphite braided rings with anti-extrusion end rings for high temperature |
| Gasket | Spiral-wound SS316 + graphite for body/bonnet joint |
| Handwheel | Cast iron or SS304 spoke handwheel, chrome-plated |
| Test | Requirement |
|---|---|
| Test Standard | API 598 / ISO 5208 |
| Certification | CE, ISO 9001 |
| Standard | Description |
|---|---|
| Design Standard | ASME B16.34 / BS 1873 (adapted) |
The Gauge Root Valve -- Piston Type 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.