Precise flow control

Prevent gas backflow

Adjust the gas volume

Yuyao Dalong Air Compressor Parts Co., Ltd. was founded in 1968 and has nearly 60 years of experience in the research, development and production of compressor valves and accessories. It is a leading domestic supplier of key compressor components. The company is a member unit of the Compressor Branch of the China General Machinery Industry Association, a first-level supply network unit of China National Petroleum Corporation, and was once a designated production enterprise of the Zhejiang Provincial Department of Machinery. It is now a key backbone enterprise in Ningbo.

Industry experience / year

cover multiple enterprises

• Precise Flow Control: Control the inhalation and discharge of gas to ensure the stability of the compressor's working cycle.

• Reverse Flow Prevention and Leakage Prevention: The one - way valve structure ensures the one - way flow of gas, with a leakage rate of less than 0.1%.

• Energy Saving and Efficiency Increase: The low - flow - resistance design reduces energy consumption by 10% - 15%.

• Laser cutting + CNC double - sided grinding (valve disc accuracy ±0.01mm)

• Fully CNC lathe for machining valve seats and valve covers + CNC machining center for milling grooves (valve seat and valve cover accuracy control ±0.03mm)

• CNC surface grinder + lapping (valve seat sealing surface Ra≤0.4μm)

• Kerosene + gas leak detection (leakage rate ≤0.05%)

• Ultrasonic flaw detection (zero crack hidden danger)

Provide supporting facilities for large compressor factories in Shanghai, Wuxi, etc. The customers include more than 20 leading energy enterprises such as Qilu Petrochemical and Yanshan Petrochemical, to verify the stability of products in harsh environments such as high temperature and corrosion.