Axial-Flow Type Check Valve

Designed for high-velocity and critical pipeline services, the Axial-Flow Type Check Valve provides rapid reverse-flow protection while maintaining a smooth, streamlined flow path. Unlike conventional hinged-disc check valves, its closure element moves along the pipeline axis, allowing the valve to respond quickly to changes in flow conditions with minimal travel. The inline configuration helps reduce turbulence, pressure loss, and valve-induced vibration, making it suitable for demanding high-flow systems.

The Axial-Flow Type Check Valve is particularly suited for oil & gas pipelines, natural gas transmission, compressor stations, petrochemical plants, power generation, and other process systems where fast response and flow efficiency are important. Its compact inline design, low-pressure-drop characteristics, and controlled closing action provide an effective solution for protecting pumps, compressors, and critical downstream equipment from reverse flow.

Inquire Now Next Products

Technical Specifications

Product description:	Axial-Flow Type Check Valve
Model:	HL43H-Axial-Flow Type Check Valve
Nominal diameter:	NPS 2”～40”
Operating temperature:	-196℃～593℃(the range of service temperature may vary for different materials)
Operating pressure:	150-2500 CLASS
Material:	Main material: A216 WCB、WCC; A217 WC6、WC9、C5、C12、C12A、CA15; A351 CF8、CF8M、CF3、CF3M、CF8C、CN3MN、CK3MCUN、CN7M; A352 LCB、LCC; A494 CW-6MC、CU5MCuC、M35-1; A890 4A(CD3MN)、5A(CE3MN)、6A(CD3MWCuN); ASME B 148 C95800、C95500, etc.
Design standard:	API 6D 、ASME B16.34
Structural length:	ASME B16.10
Connecting end:	ASME B16.5、ASME B16.25、GB 9113、GB 12224
Test standard:	API 598、ISO 5208、JB/T9092、GB/T13927
Operation method:	The valve clack is automatically opened and closed under the medium force.
Application fields:	Water, steam, petroleum, natural gas, etc.

Features & Benefits

Protects piping systems by automatically preventing backflow and maintaining process integrity.

Axial-Flow Configuration

The closure element moves along the pipeline axis, providing a direct and streamlined flow path.

Rapid Closing Response

Short axial movement allows the valve to react quickly to flow reversal and helps limit reverse-flow velocity.

Low Pressure Drop

The streamlined internal geometry reduces turbulence and flow resistance, supporting efficient pipeline operation.

Reduced Water Hammer

Controlled and rapid closure helps minimize pressure surges associated with sudden flow reversal.

Low Flow Turbulence

The inline passage promotes smoother fluid movement and reduces disturbance to downstream equipment.

High-Flow Capacity

Suitable for large-volume and high-velocity applications where maintaining flow efficiency is critical.

Compact Face-to-Face Design

The inline configuration can reduce installation space compared with longer conventional check valve arrangements.

No External Actuation

Automatic operation relies on process flow and internal spring forces, eliminating external power and control requirements.

Protection for Critical Equipment

Helps prevent reverse flow and associated damage to pumps, compressors, turbines, and other sensitive equipment.

Wide Range of Applications

Suitable for natural gas transmission, oil & gas pipelines, compressor stations, petrochemical plants, power generation, and high-flow process systems.

Application Scenario

Chemical Industry

Ball valves, butterfly valves, gate valves, globe valves, check valves, and control valves ensure safe fluid isolation, precise process control, and reliable operation in demanding chemical processing applications.

Oil Industry

Engineered for reliable isolation, flow regulation, and backflow prevention, our valve solutions support upstream, midstream, and downstream oil production and refining operations.

Natural Gas

Providing leak-tight sealing, dependable flow control, and safe pipeline operation for natural gas transmission, storage, LNG, and distribution systems.

Metallurgy

Built to withstand high temperatures, abrasive media, and harsh operating conditions in steelmaking, smelting, and metallurgical processing.

Power Generation

Ensuring reliable isolation, accurate flow control, and long-term performance in steam, boiler, turbine, and power plant systems.

Pharmaceutical

Delivering hygienic, precise, and contamination-free flow control for pharmaceutical manufacturing and clean process applications.

Steel Industry

Designed for high-temperature, high-pressure, and severe-service conditions in iron making, steelmaking, rolling mills, and auxiliary process systems.

New Energy

Supporting hydrogen, LNG, carbon capture, battery materials, and renewable energy projects with advanced valve solutions for safe and efficient process control.