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Product Description
Constructed with a robust bolted bonnet, pressure seal bonnet or welded bonnet design, the ANSI gate valve features an Outside Screw and Yoke (OS&Y) rising stem that provides immediate visual position indication—critical for safety compliance in hazardous services. The flexible wedge or solid wedge disc is precision-machined from forged steel with optional Stellite hardfacing, ensuring metal-to-metal sealing integrity at temperatures ranging from -196°C cryogenic service to +538°C superheated steam applications.
Unlike general-purpose gate valves, the American Standard gate valve is subjected to comprehensive hydrostatic shell testing, seat leakage testing and fugitive emission testing per API 598 and ISO 5208. Full material traceability to ASTM A216 WCB, A217 WC6/WC9, A351 CF8/CF8M and other alloy specifications ensures compliance with NACE MR0175/ISO 15156 for sour gas service and API 934 for high-temperature hydrogen attack resistance. Whether installed in offshore platform manifolds, refinery catalytic cracking units or cross-country crude oil pipelines, this valve represents the global benchmark for reliable, code-compliant flow isolation.
Every ANSI standard gate valve is manufactured under the API Q1 quality management system and accompanied by EN 10204 3.1/3.2 mill test certificates. These documents verify chemical composition, mechanical properties (tensile, yield, elongation), heat treatment charts and non-destructive examination (NDE) radiographic reports. For oilfield and refinery projects, this traceability is non-negotiable—ensuring compliance with NACE MR0175 for H₂S-containing sour service and API 934-A for high-pressure high-temperature (HPHT) hydrogen applications. Project engineers and procurement teams can install with confidence knowing every component is certifiable and auditable.
For Class 900, 1500 and 2500 ratings, the valve employs pressure seal bonnet technology where internal system pressure actually enhances the seal between the bonnet and body. A high-purity graphite gasket is compressed by a segmented thrust ring, creating a self-energizing seal that improves as pressure increases. This innovative design eliminates the massive stud bolting required in conventional bolted bonnet valves, reducing overall weight by up to 25% while delivering superior sealing integrity at pressures exceeding 250 bar (3,625 psi)—ideal for supercritical boiler feedwater isolation, gas injection wells and high-pressure steam headers.
Parameter | Specification |
Nominal Size | NPS 2" – NPS 60" (DN50 – DN1500) |
Pressure Class | Class 150, 300, 600, 900, 1500, 2500 |
Body Material | ASTM A216 WCB, A217 WC6/WC9/C5/C12, A351 CF8/CF8M/CF3/CF3M, A352 LCB/LCC |
Bonnet Type | Bolted Bonnet (BB), Pressure Seal Bonnet (PSB), Welded Bonnet |
Disc/Wedge | Flexible Wedge, Solid Wedge, Split Wedge; 13Cr/SS304/SS316 + Stellite 6 Hardfacing |
Stem Type | OS\&Y Rising Stem, Non-Rising Stem (NRS), Rotating Stem |
Stem Material | SS304, SS316, 17-4PH, XM-19, Alloy 20 |
Seat Material | 13Cr Stainless Steel, SS304, SS316, Stellite 6, Aluminum Bronze |
Temperature Range | -196°C (-320°F) to +538°C (+1,000°F) |
End Connections | RF, RTJ, Butt Weld (BW) per ASME B16.5 / B16.25 |
Face-to-Face | ASME B16.10 (Long Pattern / Short Pattern) |
Operation | Handwheel, Impact Handwheel, Bevel Gear, Electric Actuator, Pneumatic/Hydraulic Actuator |
Design Standard | API 600, API 6D, ASME B16.34, BS 1414 |
Testing Standard | API 598, API 6D, ISO 5208, BS 6755 |
Fire Safety | API 607, API 6FA, BS 6755 Part 2 |
Fugitive Emission | ISO 15848-1, TA-Luft, EPA Method 21 |
Certifications | API 6D Monogram, API 600, API Q1, ISO 9001, PED 2014/68/EU, ATEX, NACE MR0175 |
Oil & Gas Upstream Production，Petroleum Refining & Petrochemical Processing，Thermal & Nuclear Power Generation，Cross-Country Pipeline Transmission
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Quality Assurance & Manufacturing Standards We enforce strict quality control at every stage of production:
Pre-Production Validation: Rigorous sample evaluation prior to full-scale manufacturing.
Comprehensive In-Line & Final Inspection: 100% testing on sealing, pressure containment, and dimensions before dispatch.
International Protocol Compliance: Quality management workflows executed in full alignment with global industry standards.
Why Partner With Us?
Direct Manufacturing Value: Competitive industry pricing paired with uncompromised material quality.
Global Logistics Flexibility: Multi-channel shipping support including FOB, EXW, FCA, DDP, and DAF terms.
Seamless International Payments: Support for multi-currency transactions (USD, EUR, GBP, JPY, CNY, etc.) and versatile payment methods (T/T, L/C, Credit Card, PayPal, and more).
