Stainless Steel API Standard Gate Valve – YONCO Class 150LB to 2500LB
The YONCO Stainless Steel API Standard Gate Valve (Z40H) is a high-performance isolation valve engineered to excel in demanding industrial environments. Designed and manufactured in strict compliance with API 600 and ASME B16.34 specifications, this valve is suitable for ANSI Class 150 to 2500 (PN20~42, JIS10~20K) applications. Capable of withstanding extreme working temperatures from -40°C to +500°C, it provides exceptional bi-directional shut-off for a wide range of media including water, steam, oil products, and highly corrosive fluids like nitric acid, acetic acid, and urea.
Core Features & Advantages
- Advanced Elastic Wedge Design: Features a resilient wedge gate structure that automatically compensates for thermal expansion and pipeline stress. Medium and large bore sizes are equipped with rolling bearings for significantly reduced operating torque and effortless opening/closing.
- Exceptional Sealing Integrity: Complies with advanced international standards to deliver highly reliable sealing. The sealing surfaces are available with Cr13, hard alloy, or stellite (STL) hard-facing for superior resistance to galling, abrasion, and corrosion.
- Versatile Material Configuration: Available in a comprehensive range of premium body materials including CF8 (304), CF3 (304L), and CF8M (316). Packings and gaskets can be customized (e.g., flexible graphite and stainless steel spiral wound gaskets) to meet specific temperature, pressure, and media requirements.
- Optimized Structural Profile: Boasts a compact, well-proportioned design that maximizes flow capacity while minimizing pressure drop, reducing overall system energy consumption.
- Broad Flange Compatibility: Manufactured to accommodate various domestic and international piping flange standards and sealing face types, ensuring seamless integration into any engineering project.
Standards & Technical Specifications
| Category | Applicable Standard & Details |
|---|---|
| Design & Manufacture | API 600 |
| Face-to-Face Dimension | ANSI / ASME B16.10 |
| Flange Connection Dimensions | ANSI / ASME B16.5 |
| Pressure – Temperature Rating | ANSI / ASME B16.34 |
| Nominal Pressure Rating | Class 150, 300, 600, 900, 1500, 2500 (PN20~PN42) |
| Test & Inspection | API 598 |
| Body Materials | WCB, 1Cr18Ni9Ti, CF8 (304), CF3 (304L), CF8M (316) |
Primary Applications
• Corrosive Chemical Processing (Nitric/Acetic Acids)
• Oil Refining & Petrochemicals
• Fertilizer & Urea Manufacturing
• Strong Oxidizing Media Handling
• High-Temperature Steam Networks
• General Industrial Water & Fluid Systems
Certified API Valves by YONCO
When failure is not an option, rely on YONCO. Our stainless steel API standard gate valves undergo rigorous 100% hydrostatic and pneumatic testing to ensure bubble-tight isolation and zero external leakage, capable of handling everything from standard water to highly corrosive industrial acids. We provide complete Material Test Reports (MTRs) and custom actuation solutions. Contact our sales engineers today to specify the right trim, material, and pressure class for your pipeline.




