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Technical Datasheet -- Direct-Acting and Pilot-Operated Pressure Reducing Regulators
Gas pressure regulators for natural gas distribution and transmission systems. Direct-acting and pilot-operated designs maintain constant downstream pressure regardless of upstream pressure and flow variations. Compliant with EN 334, ANSI Z21.80, and ASME B31.8.
| Parameter | Specification |
|---|---|
| Product Type | Gas Pressure Reducing Regulator |
| Category | Gas Regulation |
| Size Range | 4" (DN100) -- other sizes on request |
| Pressure Class | Class 150 RF per ASME B16.5 |
| End Connections | Raised Face (RF) Flanged per ASME B16.5 |
| Flow Rating | Up to 25 MMSCFD (size and pressure drop dependent) |
| Body Material | Ductile Iron GGG50 (low pressure) / Carbon Steel ASTM A216 WCB (higher pressure) |
| Trim Material | SS316 / Aluminium Bronze |
| Diaphragm Material | NBR / EPDM (low pressure) / SS316 (high pressure) |
| Spring Material | Alloy Steel / SS316 |
| Accuracy Class | +/- 2.5% to +/- 5% of outlet pressure setpoint (dependent on design) |
| Lock-Up Pressure | Typically 1.1 to 1.2 x outlet pressure setpoint |
| Inlet Pressure | To be specified by purchaser (factory-set) |
| Outlet Pressure | To be specified by purchaser (factory-set) |
| Component | Material |
|---|---|
| Ductile Iron | GGG50 per EN-GJS-500-7 (lower pressure classes) |
| Carbon Steel | ASTM A216 WCB (higher pressure classes) |
| Stainless Steel | SS304, SS316, SS316L trim and diaphragm |
| Aluminium Bronze | ASTM B148 C95800 (trim, corrosion resistant) |
| Test | Requirement |
|---|---|
| Testing | Hydrostatic shell test 1.5 x WP per API 598 / EN 12266-1; Seat leakage test 1.1 x WP -- zero visible leakage; Functional test -- pressure control accuracy, lock-up pressure, full stroke; Set pressure verification -- each regulator individually tested and certified |
| Certification | ISO 9001:2015 QMS, EN 10204 3.1 material certificates, functional test reports |
| Standard | Description |
|---|---|
| Design Standard | EN 334 Gas Pressure Regulators for Inlet Pressures up to 100 bar, ANSI Z21.80 |
| Service Standard | ASME B31.8 Gas Transmission and Distribution Piping Systems |
The Gas Pressure Regulator -- EN 334 Natural Gas Service 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.