DOT Air Brake Fittings Nylon Tubing
The DOT Air Brake Fittings Nylon Tubing manufacture!
Zhejiang Yijia Hydraulic Machinery Co., Ltd. is an industry and trade company for hardware production in China founded in 2013. The company focuses on brass fittings and customized precision parts.
Why choose us
Customized Solutions
We offer tailored hydraulic fittings and hoses designed to meet specific customer requirements. Our team works closely with clients to provide bespoke solutions that fit their unique applications and operational needs.
Our Certificate
Yijia Machinery has passed IATF 16949:2016 system certification,ISO 9001 & ISO 14001 system certification,DOT, AMECA product certification.
Rigorous Quality Control
We implement stringent quality control measures at every stage of production. Our adherence to ISO, BV, and TVU standards guarantees that each product meets the highest benchmarks for performance and safety.
Dedicated Customer Service
Our customer service team is committed to providing exceptional support and addressing any concerns promptly. We prioritize clear communication and proactive problem-solving to ensure a seamless experience for every client.
|
Part# |
Tube O.D |
PARKER |
EATON |
ALKON |
MAF |
GATES |
|
1573-2 |
1/8 |
|
|
38018 |
|
|
|
1573-13 |
5/32 |
|
|
|
|
|
|
1573-3 |
3/16 |
|
|
|
|
|
|
1573-4 |
1/4 |
62NTA-4 |
1462x4 |
38019 |
G32400-0404 |
62NAB4 |
|
1573-6 |
3/8 |
62NTA-6 |
1462x6 |
38020 |
G32400-0606 |
62NAB6 |
|
1573-8 |
1/2 |
62NTA-8 |
1462x8 |
38021 |
G32400-0808 |
62MAB8 |
|
1573-10 |
5/8 |
62NTA-10 |
1462x10 |
38022 |
632400-1010 |
62NAB10 |
|
1573-12 |
3/4 |
62NTA-12 |
1462x12 |
38023 |
G32400-1212 |
62MAB12 |
|
Part# |
Tube O.D |
Tectran |
Automann |
Fleet Pride |
Fairview |
Phillips |
Tramec Sloan |
|
1573-2 |
1/8 |
1362-2 |
|
|
|
|
|
|
1573-13 |
5/32 |
1362-25* |
|
|
|
|
|
|
1573-3 |
3/16 |
|
|
|
|
|
|
|
1573-4 |
1/4 |
1362-4 |
117.14624 |
N62-4 |
1462-4 |
12-8504 |
S762AB-4 |
|
1573-6 |
3/8 |
1362-6 |
117.14626 |
N62-6 |
1462-6 |
12-8506 |
S762AB-6 |
|
1573-8 |
1/2 |
1362-8 |
117.14628 |
N62-8 |
1462-8 |
12-8508 |
S762AB-8 |
|
1573-10 |
5/8 |
1362-10 |
117.146210 |
N62-10 |
1462-10 |
12-8510 |
S762AB-10 |
|
1573-12 |
3/4 |
1362-12 |
117.14612 |
N62-12 |
1462-12 |
|
S762AB-12 |
Advantages of DOT Air Brake Fittings Nylon Tubing
Compact Design
DOT-approved push-to-connect air brake fittings are compact, making them ideal for installation in confined areas. Unlike compression fittings, which require tools for installation, push-to-connect fittings only need tools for the pipe thread ends, saving time and minimizing the risk of damage to surrounding components.
Leak-Free Seals
Achieving leak-free seals is straightforward with DOT-approved push-to-connect fittings. Simply push the fitting onto the tube or hose. Compression fittings, in contrast, require precise torque to ensure a proper seal, which can be more time-consuming and prone to error.
Minimal Adjustments Required
Push-to-connect fittings typically do not require adjustments after installation to remain leak-free. Compression fittings, often need retightening, which can cause crimping or distortion of the tube, leading to future leaks.

Application of DOT Air Brake Fittings Nylon Tubing
Commercial Vehicle Air Brake System
1. Brake line extension
Braking systems for commercial vehicles (e.g. trucks, buses, trailers) often require compressed air to be transferred over long distances, e.g. from the storage tank (at the frame) to the brake air chamber (near the wheels). Union can be used to seamlessly connect multiple sections of nylon tubing to ensure stable air pressure transfer while meeting the DOT FMVSS 121 requirements for brake response time (≤1.5 seconds).
2. Trailer and towing vehicle brake line connection
The brake lines between the trailer and the tractor need to be connected and disconnected quickly, and at the same time ensure the reliability of air pressure transmission during emergency braking. This is where Union can be used to connect the nylon lines of the tractor and trailer.
Industrial pneumatic system
1. Compressor air delivery line
Use Union to extend nylon lines around obstacles or across different areas. For example, industrial compressors deliver high-pressure air to remote equipment (e.g., air tools, automated machinery).
2. Pneumatic connections for automation equipment
In automation equipment such as robotic arms and cylinders, Union connects the nylon tubing to the equipment interface, accommodating the displacement of moving parts and ensuring stable transmission of pneumatic signals.
3. Factory pneumatic pipe network
Factory pneumatic pipe network needs frequent modification or expansion, Union can be used to quickly connect or disconnect the pipeline, to support the modular layout adjustment to adapt to changes in production line layout.
Other Special Scenarios
1. Hydraulic piping for construction machinery
Scenario requirements:
The hydraulic systems of excavators, loaders and other construction machinery require high-pressure, vibration-resistant piping connections. We can use Union to connect the nylon hydraulic pipeline to ensure the transmission of hydraulic oil without leakage.
2. Refrigeration equipment piping
Refrigeration equipment (e.g., cold storage, air conditioning systems) requires reliable piping connections. Use Union to connect nylon lines to ensure leak-free refrigerant transfer.
Packaging & Shipping

Our factory
Yijia Hydraulic Machinery adopts full CNC machining, with a workshop area of 3600 square meters, equipped with 100 sets of full machine tools, 60 sets of semi-automatic CNC machines, and 5 sets of inspection equipment.We have an annual production capacity of 3 million sets of brass fittings and air brake hose assemblies.


















