.jpg)
.jpg)
.jpg)
.jpg)
.jpg)
.jpg)
API High-Temperature Swing Check Valve: Engineered for Extreme Heat & Critical Service
Our API High-Temperature Swing Check Valve is precision-engineered for the most demanding industrial applications where extreme heat, high pressure, and reliable backflow prevention are non-negotiable. Manufactured in strict compliance with API 594 and API 6D standards, this valve is the definitive solution for protecting critical equipment in power generation, hydrocarbon processing, and refinery operations.Constructed from premium ASTM A217 WC6/WC9 grade cast chromium-molybdenum steel, this valve offers exceptional resistance to thermal shock, creep, and oxidation, ensuring unwavering performance in continuous service temperatures up to 1200°F (650°C).
API Compliance & Quality Assurance
Every API High Temperature Swing Check Valve adheres to API standards (such as API 6D or API 594, depending on application) and undergoes rigorous testing to ensure safety and performance. This includes:
Hydrostatic pressure testing (1.5× maximum working pressure) to verify leak tightness;
Thermal cycling tests to confirm stability under extreme temperature fluctuations;
Material composition analysis to validate heat-resistant alloy integrity.
Additional certifications (ISO 9001, ASME B16.34) further guarantee alignment with global industrial benchmarks, making it suitable for critical operations where non-compliance risks downtime or safety hazards.
Key Features & Engineering Superiority
Robust High-Temp Materials: The valve body, cover, and disc are crafted from A217 WC6 (C½% Mo) or WC9 (C2¼% Cr-1% Mo) alloy steel, providing superior tensile strength and resistance to graphitization and hydrogen attack in high-temperature environments.
Full API Compliance: Designed and tested to meet the rigorous requirements of API 594 (Wafer Check Valves) and API 6D (Pipeline Valves), ensuring guaranteed performance, dimensional interchangeability, and material traceability.
Pressure Class Ratings: Available in a full spectrum of pressure classes, from ANSI Class 150 to Class 2500, to withstand the most intense system pressures in steam and process lines.
Flanged End Connections: Standard Raised Face (RF) or Ring Type Joint (RTJ) flanges provide a robust, leak-tight connection for easy integration into existing high-pressure piping systems.
Optimized Swing Disc Design: The full-bore, streamlined design minimizes pressure drop and turbulence. The disc swings open completely for unrestricted flow and closes rapidly upon flow cessation to prevent reverse flow and dangerous water hammer.
Metal-to-Metal Seating: The stellite or cobalt-based hard-faced seating surfaces ensure a tight, bubble-proof seal even after prolonged exposure to cycling temperatures, outperforming soft-seated valves.
Optional Lever & Spring: For vertical flow applications or to control closing speed and prevent disc flutter, an external lever and weight or spring-assisted mechanism can be specified.
Technical Specifications
Specification Category | Technical Details & Parameters |
Compliance Standards | - Primary Standards: API 6D (Pipeline Valves), API 594 (Check Valves) |
Body & Trim Materials | - Body: A217 WC6/WC9 Alloy Steel (high-temperature resistance), 304/316 Stainless Steel (corrosion resistance), Carbon Steel WCB/LCB/LCC(API 5L Gr. B for low-to-moderate temps) |
Temperature Range | - Operating Temperature: -20°F to 1200°F (-29°C to 649°C) |
Pressure Rating | - Maximum Working Pressure (MWP): Up to 2500 LB (psi) |
Size & End Connections | - Nominal Pipe Size (NPS): 1 inch to 24 inches (custom sizes available for industrial needs) |
Design & Operation | - Valve Type: Swing Disc Check Valve (automatic non-return) |
Performance Features | - Leakage Class: ANSI FCI 70-2 Class V (bubbles-tight) for metal seats, Class VI (ultra-low leakage) for PTFE seats |
Testing & Quality Control | - Factory Tests: Hydrostatic Pressure Test, Pneumatic Leak Test, Material Spectroscopy (for alloy verification), Dimensional Inspection (per API/ASME standards) |
Industrial Compatibility | - Suitable Fluids: Steam, Hot Water, Crude Oil, Natural Gas, Petrochemicals, Chemicals (acids/alkalis), Industrial Effluents |
Key Applications
The API High Temperature Swing Check Valve is indispensable across industries relying on high-temperature fluid control:
Power Generation: Installed in boiler feedwater lines, steam turbines, and cooling systems to handle high-temperature steam and protect turbine components;
Petrochemical Refining: Used in distillation columns, cracking units, and hydrocarbon transfer lines to manage hot, corrosive crude oil byproducts;
Chemical Manufacturing: Ideal for heat-intensive reactions (e.g., polymer production) and handling hot chemical solvents, acids, or alkalis;
Oil & Gas Upstream/Downstream: Suitable for wellhead steam injection systems (enhanced oil recovery) and refinery process lines.
Why Choose This API High Temperature A217 WC6 Flange Swing Check Valve?
Extended Service Life: Superior materials and hard-faced trims drastically reduce wear from erosion and corrosion.
System Safety & Reliability: Prevents catastrophic reverse flow, protecting pumps, compressors, and turbines.
Reduced Total Cost of Ownership: Durable construction minimizes unplanned downtime, maintenance, and replacement costs.
Global Certification: Valves are supplied with full certification packages (CMTR, NACE, IBR) to meet global project requirements.
Upgrade your high-temperature pipeline with a valve built to the highest industrial standards. Contact our engineering team for technical data sheets and a competitive quotation tailored to your project specifics.