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Technical Datasheet -- Rubber-Wedge Resilient Seated Gate Valves for Water and Wastewater
Resilient seated (rubber wedge) gate valves for water distribution, wastewater, and irrigation service. Rubber-encapsulated ductile iron wedge and replaceable rubber seat ring achieve bubble-tight shutoff even on debris and sediment -- outperforming metal-seated gate valves in raw water and wastewater. Non-rising stem (NRS) for buried service or OS&Y rising stem for above-ground visual indication. Ductile iron EN-GJS-500-7 (GGG50) epoxy-coated body. AWWA C509 / AWWA C515 / BS 5163 / EN 1171 compliant. Handwheel, bevel gear, key-operated square nut, or actuator drive.
| Parameter | Specification |
|---|---|
| Product Type | Resilient Seated Gate Valves |
| Category | Gate Valves |
| Size Range | 2" to 48" (DN50 to DN1200) |
| Pressure Rating | PN10 / PN16 / Class 150 (waterworking pressure: 150 psi / 200 psi / 250 psi per AWWA C509) |
| End Connections | Flanged per AWWA C207 (Class B, D, E) / EN 1092-1 PN10/PN16 / ASME B16.5 Class 125 / Class 150, Socket end (push-on or mechanical joint per AWWA C111/A21.11) |
| Body Material | Ductile Iron EN-GJS-500-7 (GGG50) epoxy-coated / Cast Iron EN-GJL-250 (GG25) epoxy-coated (on request for non-shock service) |
| Wedge Material | Ductile Iron EN-GJS-500-7 (GGG50) epoxy-coated with EPDM or NBR rubber encapsulation (vulcanised or bonded) |
| Seat Material | EPDM / NBR / Viton FPM rubber seat ring (replaceable) bonded or retained in body seat recess |
| Stem Material | SS410 / SS304 / SS316 (corrosion resistant) -- rising or non-rising design |
| Bonnet Type | Bolted bonnet with EPDM / NBR gasket -- OS&Y (outside screw and yoke, rising stem) or NRS (non-rising stem) |
| Face-to-Face | AWWA C509 / ASME B16.10 short pattern (NRS) or long pattern (OS&Y) |
| Operation | Handwheel (standard up to 12 inch) / Bevel gear (14 inch and above) / Square nut for key / Pneumatic / Electric actuator |
| Leakage Class | AWWA C509 -- zero visible leakage at rated pressure (resilient seat bubble-tight); EN 12266-1 Class A -- zero visible leakage |
| Temperature Range | -10 deg C to +80 deg C (EPDM, water) -- up to +120 deg C (NBR, oil/hydrocarbon on request) |
| Component | Material |
|---|---|
| Ductile Iron | EN-GJS-500-7 (GGG50) epoxy-coated body and wedge (standard water/wastewater) |
| Cast Iron | EN-GJL-250 (GG25) epoxy-coated body (economical, non-shock water service on request) |
| Stainless Steel | SS410 / SS304 / SS316 stem (corrosion resistant, standard for potable water) |
| Rubber Encapsulation | EPDM (water, wastewater, potable), NBR (oil/hydrocarbon), Viton FPM (chemical, high temp on request) |
| Test | Requirement |
|---|---|
| Testing | Hydrostatic shell test 1.5 x WP per API 598 / EN 12266-1; Seat leakage test per API 598 / EN 12266-1; Functional test -- full stroke, torque; Material certificates per EN 10204 3.1 |
| Certification | ISO 9001:2015 QMS, EN 10204 3.1 material certificates, hydrostatic and seat test reports |
| Standard | Description |
|---|---|
| Design Standard | AWWA C509 Resilient-Seated Gate Valves for Water Supply Service, AWWA C515 (large diameter), BS 5163, EN 1171 |
The Resilient Seated Gate Valve -- AWWA C509 Water / Wastewater 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.