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Modulating Linear Control Valve with Pneumatic Diaphragm Actuator
This datasheet covers multi-spring diaphragm pneumatic actuators mounted on T-pattern globe valves for modulating control of steam, water, and process fluids in power, chemical, and general industry.
| Parameter | Specification |
|---|---|
| Valve Size Range | DN15 to DN300 (1/2" to 12") |
| Pressure Rating | PN16 / PN40 / Class 150 / Class 300 |
| Body Material | WCB, WC6, CF8M (SS316), CF8 (SS304) |
| Plug / Seat Material | SS316 / SS316 + Stellite 6 overlay, 13Cr / 410 |
| Actuator Type | Multi-spring diaphragm pneumatic (direct / reverse acting) |
| Actuator Action | Air-to-open (direct) or air-to-close (reverse) |
| Positioner | Smart 4-20 mA HART positioner with auto-tune |
| Cv Range | 0.1 to 1,500 (characterised plug dependent) |
| Leakage Class | ANSI/FCI 70-2 Class IV (standard), Class V or VI (optional) |
| Temperature Range | -29°C to +425°C (WCB with graphite packing) |
| End Connections | Flanged ASME B16.5 / BS EN 1092-1, butt weld |
| Component | Material |
|---|---|
| Body | WCB carbon steel or WC6 Cr-Mo steel for high temperature |
| Bonnet | WCB / WC6 with extended neck for high-temperature packing seal |
| Plug | SS316 with Stellite 6 hard facing for erosion resistance |
| Seat Ring | SS316, integral or replaceable screwed seat |
| Stem | SS316, ground and lapped, guided by upper and lower bushings |
| Actuator Diaphragm | Reinforced neoprene or EPDM fabric-reinforced |
| Packing | Graphite braided rings with anti-extrusion rings for high temperature |
| Test | Requirement |
|---|---|
| Test Standard | API 598 / IEC 60534-4 / ANSI/FCI 70-2 |
| Certification | CE, SIL 2 / SIL 3 capable, ATEX on request |
| Standard | Description |
|---|---|
| Design Standard | ASME B16.34 / IEC 60534-2 / ISA S75.08 |
The Pneumatic Actuated Globe Valve -- Diaphragm Linear WCB 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.