Axial-Flow Non-Slam Check Valve for Large Pipelines

Our Axial-Flow Non-Slam Check Valve is a high-efficiency, ultra-reliable industrial valve engineered for large pipeline systems, designed to deliver unmatched performance in preventing medium backflow while minimizing operational downtime and maintenance costs. Manufactured in strict compliance with GB/T 21387 design standards, with end flanges compatible with ASME B16.5, JIS B2220, and DIN2543, and tested per API598 specifications, this non-slam check valve for large pipelines is built to meet the rigorous demands of global industrial fluid systems. Its core operating principle relies on precise pressure differential control: the valve disc opens automatically when inlet pressure exceeds the sum of outlet pressure and spring force, and closes rapidly when pressure reverses, eliminating the violent impact common in standard check valves. Available in sizes from 4” to 16” and pressure ratings from 150LB to 600LB, it supports a wide temperature range of -20℃ to 200℃ for water, oil, gas, and steam media.

Key Features & Industry-Leading Benefits

Non-Slam Shock-Absorbing Design for Maximum System Protection

Unlike conventional check valves that suffer from severe disc-to-body impact during operation, our axial flow check valve features a lightweight, low-inertia disc that closes with minimal contact force. This innovative design eliminates water hammer, reduces pipeline vibration, and cuts operational noise dramatically, preserving the integrity of valve seat sealing surfaces and extending the valve’s service life.

Optimized Flow Path for Superior Efficiency & Energy Savings

The valve’s straight, streamlined internal flow channel minimizes fluid resistance, delivering a higher flow rate than comparable check valves. This optimized design reduces fluid energy loss and pipeline pressure drop, lowering long-term operational energy costs for large-scale pipeline systems.

Durable Material Construction for Long-Term Reliability

We offer multiple material configurations to suit diverse operating environments, including carbon steel (WCB), stainless steel (CF8), and duplex stainless steel (CF8M) for the valve body, yoke, and disc, paired with a 17-4PH stainless steel spring and corrosion-resistant stem materials. Every component is precision-machined to ensure consistent performance, even in continuous heavy-duty industrial applications.

• Design Standard: GB/T 21387

• End Flange: ASME B16.5 / JIS B2220 / DIN2543

• Inspection and testing: API598

Industrial Applications

Our industrial axial flow check valve is trusted by plant operators, engineering contractors, and pipeline system integrators across critical sectors:

• Long-distance oil and gas pipeline systems, where it prevents medium backflow and eliminates destructive water hammer and pipeline vibration

• Pump and compressor discharge lines, protecting rotating equipment from damage caused by sudden fluid backflow

• Cooling water systems for ethylene, liquefied natural gas, and other large process plants, mitigating water hammer risks

• Waterworks and water transmission systems, ensuring stable flow control and consistent water quality

• Large ethylene and petrochemical facilities, safeguarding equipment from backflow-related failures and supporting safe, uninterrupted operation

Non-slam check valve

1) Design Standard: GB/T 21387

2) End Flange: ASME B16.5,DIN2543,GB9113

3) Size: 4"-16"

4) Pressure: 150lb~600lb

5) Temperature: 200℃

6) Materials: Carbon steel/Stainless steel

7) Suitable Medium: Water,Oil,Gas,Steam

FAQ About This Axial-Flow Non-Slam Check Valve

What makes an axial-flow non-slam check valve different from standard check valves?

Our no water hammer check valve uses an axial flow design with a low-inertia disc and spring-assisted closing, which responds far faster than swing check valves. It closes before flow reverses fully, eliminating the slamming impact, water hammer, and noise that plague standard check valve designs.

Does this axial flow check valve deliver energy savings for large pipeline systems?

Yes. The valve’s straight, unrestricted flow path reduces fluid resistance and pressure drop significantly compared to conventional check valves, cutting the energy required to move fluid through the pipeline and lowering long-term operational costs.

What design standards and material options are available?

This valve is designed to GB/T 21387, with flange connections meeting ASME B16.5, JIS B2220, and DIN2543 standards, and tested per API598. Material options include carbon steel (WCB), 304 stainless steel (CF8), and 316 stainless steel (CF8M) to suit corrosive, high-temperature, and general industrial applications.