Technical Datasheet & Specifications
| Parameter | Specification |
|---|---|
| Product Name | NAB Gate Valve – API 600 for Seawater |
| Description | Gate Valve for Oil & Gas, Petrochemical, Water Treatment. KSA/UAE export. API compliant. AHMEDABAD manufacturer. Request enquiry. |
| Parameter | Specification |
|---|---|
| Valve Type | Knife Edge Gate Valve, Bonnetless, Lug/Wafer Type, Uni-Directional / Bi-Directional |
| Size Range | DN50 (2") to DN900 (36") |
| Pressure Rating | ASME B16.5 Class 150# / PN10 / PN16 (MSS SP-81 compliant) |
| End Connection | Lug / Wafer type with through-holes and tapped holes per MSS SP-81 |
| Face-to-Face | MSS SP-81 Short Pattern / C-Face |
| Design Standard | MSS SP-81 (Standard Practice for Stainless Steel Knife Gate Valves) |
| Testing Standard | API 598 / MSS SP-81 / EN 12266-1 -- Shell Test 1.5 x PN, Seat Test 1.1 x PN |
| Seat Leakage | ANSI/FCI 70-2 Class VI (Bubble Tight) for soft seats; MSS SP-81 class for metal seats |
| Operation | Manual Handwheel / Chain Wheel / Hand Lever / Bevel Gear (recommended for sizes > DN200) |
| Flow Direction | Uni-Directional or Bi-Directional per process requirements |
| Working Temperature | EPDM Soft Seat: -29°C to 120°C; PTFE Soft Seat: -29°C to 180°C; Metal Seat: -29°C to 400°C |
| Part | Standard Material | Exotic/Special Alloys (On Request) |
|---|---|---|
| Body & Chest | ASTM A351 CF8 (SS304) / CF8M (SS316) / Cast Steel WCB / Ductile Iron GGG40 | Super Duplex (UNS S32750), Alloy 20 (UNS N08020) |
| Blade/Gate | AISI 304 / AISI 316 -- Solid single-piece, ground and polished to 0.4 μm, bevelled edge | AISI 316Ti, Duplex SS, Stellited Edge |
| Seat Ring | Integral SS304/SS316 (Metal-to-Metal) or Replaceable EPDM / PTFE / Viton / NBR Soft Seat | Polyurethane liner, Hastelloy C seat ring, Stellite 6 hardfacing |
| Gland Packing | PTFE-impregnated synthetic fiber with integrated high-elasticity Silicone core | Pure graphite, PTFE packing with copper wire |
| Gland Follower | Cast SS304 CF8 / SS316 CF8M / WCB with epoxy powder coating | High tensile bronze |
| Stem / Spindle | SS410 / SS304 / SS316 -- ACME threaded rising stem / non-rising spindle option | SS17-4PH, Duplex Stem |
| Yoke & Pillars | Carbon Steel (ASTM A36 / IS 2062) with heavy epoxy coating or Solid SS304/SS316 | SS316 structural plate |
| Handwheel | Cast Iron / Pressed Sheet Metal / Carbon Steel with epoxy powder coating | Stainless steel 304/316 handwheel |
Dimensions conform to MSS SP-81 for face-to-face (Short Pattern). Bore sizes are full-bore DN50 (2") to DN900 (36"). Lug bolting patterns conform to ASME B16.5 Class 150# or EN 1092-1 PN10/PN16 with blind tapped lugs in chest area. Detailed general arrangement drawings (GAD) with dimensional tables, handwheel clearance heights, and weight data are provided upon engineering submittal approval.
| Test | Standard Reference | Acceptance Criteria |
|---|---|---|
| Body Hydrostatic Shell | MSS SP-81 / API 598 | 1.5 x Rated Pressure (15 bar for 150# body), 60s hold, zero visible leakage/deformation |
| Seat Hydrostatic (Water) | MSS SP-81 / API 598 | 1.1 x Rated Pressure (11 bar for 150# body), resilient seats: zero leakage (Bubble-tight); metal: MSS SP-81 limits |
| Low Pressure Seat Air | EN 12266-1 / API 598 | 6 bar air pressure, 60s hold, bubble-tight zero leakage on soft seats |
| Mechanical Operation | MSS SP-81 | Verify smooth manual handwheel or bevel gear operation, full open/close travel, stem nut lubrication |
| PMI & Visual | ASTM E1476 / MSS SP-55 | Positive Material Identification on body & blade, visual check for casting defects per MSS SP-55 |
| Code/Standard | Description |
|---|---|
| MSS SP-81 | Stainless Steel, Bonnetless, Flanged Knife Gate Valves (standard design code) |
| ASME B16.5 | Pipe Flanges and Flanged Fittings (bolting pattern compatibility) |
| ASME B16.34 | Valves -- Flanged, Threaded, and Welding End (pressure-temperature ratings) |
| ISO 5211 | Industrial valves -- Part-turn actuator attachments (for eventual automation retrofit) |
| MSS SP-25 | Standard Marking System for Valves |
| Deliverable | Details / Status |
|---|---|
| Material Test Certificates | EN 10204 3.1 Mill Certificates with full chemical & mechanical heat traceability |
| Pressure Test Reports | Hydrostatic and pneumatic test certificates signed by QA/QC inspectors |
| GAD Drawing | Approved GAD drawing with handwheel clearance, tag number, and weight list |
| Compliance certificate | Declaration of compliance to MSS SP-81 design and testing standards |
Supreme Enterprise
Industrial Valves & Engineering Solutions
4th Floor, Survey No. 235/A and 247/A, E/401,
Nr. Bhattha School, Gyaspur,
Ahmedabad, Gujarat 382405, India
Branch: Mehta House, Relief Road, Ahmedabad 380001
GST: 24AFAFS5839J1ZQ • IEC: AFAFS5839J
Email: info@supremevalves.in
Phone: +91 97732 78770
Web: www.supremevalves.in
The NAB Gate Valve – API 600 for Seawater is designed, manufactured, and tested in accordance with MSS SP-81 (Standard Practice for Stainless Steel Knife Gate Valves). 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 DN50 (2") to DN900 (36") with ASME B16.5 Class 150# / PN10 / PN16 (MSS SP-81 compliant). 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.