China Check Valve Manufacturers, Suppliers and Factory - Customized Check Valve

Check Valve Manufacturer for Reliable Backflow Prevention

High-performance check valves designed to ensure one-way flow, protect pipeline systems, and reduce operational risks. We supply a full range of industrial check valves engineered for low pressure loss, fast response, and long service life.

API 6D Swing Check Valve
The API 6D Swing Check Valve is a swing-type check valve compliant with the API 6D standard. Designed to prevent backflow of pipeline media, it operates automatically—opening and closing in response
read more
API 6D Piston Check Valve
The API 6D Piston Check Valve is a piston-type check valve compliant with the API 6D standard. Utilizing a piston mechanism for automatic opening and closing, it prevents backflow of the medium and
read more
Cryogenic Check Valve
A cryogenic check valve is a one-way valve designed for low-temperature media at -196°C (such as LNG, liquid nitrogen, and liquid oxygen); it serves to prevent backflow and is widely utilized in
read more

Specification

Product name	Check valve
Size Range	2"～30"
Pressure Range	150LB~2500LB
End Connection	Flanged end /Butt welding end
Valve Direction	Uni-directional
Temperature Range	Down to -196℃
Service	LNG/LN₂/LO₂terminals,Air separation plants
Material	Body:A351 CF8M,and moreTrim:HF/HF

Quick Check Valve Selection Guide

Choosing the right check valve is essential for system safety and performance.

Application-Based Selection

Application	Recommended Type	Key Benefit
Water Systems	Swing Check Valve	Low pressure loss
Oil & Gas	Lift Check Valve	High sealing reliability
HVAC Systems	Wafer Check Valve	Compact and lightweight
Pump Systems	Non-Slam Check Valve	Prevent water hammer

Key Selection Factors

Flow direction and installation position
Pressure rating and system conditions
Medium type (water, gas, corrosive fluids)
Risk of water hammer
Maintenance requirements

Industry Applications

Our check valves are widely used across multiple industries:

Oil & Gas
Pipeline systems, refining processes, and offshore platforms requiring high reliability.

Water Treatment
Municipal and industrial water systems for flow control and backflow prevention.

Power Generation
High-pressure and high-temperature systems in thermal and nuclear plants.

Chemical Processing
Handling corrosive and hazardous media with specialized materials.

HVAC Systems
Efficient fluid control in heating and cooling systems.

Quality Assurance

100% Pressure Testing

Every valve is tested according to API 598 or EN12266-1 standards (Shell & Seat test) before shipment.

Material Traceability (MTC)

We provide full material traceability reports per EN 10204 3.1, ensuring the chemical composition and mechanical properties match your project specs.

Precision Machining

Seats and discs are precision-lapped to a mirror finish, ensuring bubble-tight sealing even at low back-pressure.

Positive Material Identification (PMI)

On-site PMI testing is conducted to verify alloy grades (SS316, Duplex Steel, etc.) for corrosive environments.

Customization & OEM Service

We offer flexible customization to meet project-specific requirements:

Special materials for corrosive environments

Custom sizes and pressure ratings

Surface coating and anti-corrosion treatments

OEM branding and packaging

Professional Support For Global Projects

Technical Documentation
Complete 2D/3D CAD drawings, Datasheets, and Installation & Maintenance (IOM) manuals provided with every order.

Third-Party Inspection (TPI)
We fully cooperate with international inspection agencies such as SGS, BV, TUV, or ABS for witness testing.

Custom Coating
Specialized painting systems (e.g., Jotun, Hempel) for offshore C5-M high-corrosion environments.

Fast-Track Delivery

We maintain a semi-finished stock of common sizes (DN50-DN300) to support urgent maintenance and repair (MRO) requirements.

FAQ

Q: How do I choose the right check valve?

A: Selection depends on pressure, medium, installation orientation, and system requirements. Our engineers can provide recommendations.

Q: What is the difference between swing and lift check valves?

A: Swing check valves offer lower pressure drop, while lift check valves provide better sealing under high pressure.

Q: How can water hammer be prevented?

A: Using dual plate or non-slam check valves helps reduce pressure surges.

Q: Can check valves be installed vertically?

A: Some types, such as lift check valves, support vertical installation depending on design.

Q: What is your delivery time?

A: Standard products are typically delivered within 7–20 days depending on order specifications.

As one of the leading check valve manufacturers and suppliers in China, we offer a wide range of products with superior quality. We warmly welcome you to buy high quality check valve made in China here from our factory. We also accept customized orders.

API 6D Swing Check Valve, check valve, API 6D Piston Check Valve

Send Inquiry