Well-designed Spring Return Valve - rider ring – DONGYI Detail:
Selection from a comprehensive range of tribological materials
No pressure applied to the rider ring by relief grooves
Conversion of cylinder from lubricated to non-lubricated operation
In reciprocating compressors, rider rings guide the piston in the cylinder bore.
We manufacture them from materials that are specifically developed for the respective application.
Product detail pictures:

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Bear "Customer first, High quality first" in mind, we perform closely with our consumers and provide them with efficient and experienced services for Well-designed Spring Return Valve - rider ring – DONGYI, The product will supply to all over the world, such as: Romania , Turkmenistan , Thailand , Due to our dedication, our products are well known throughout the world and our export volume continuously grows every year. We will continue to strive for excellence by providing high quality products that will exceed the expectation of our customers.

This supplier stick to the principle of "Quality first, Honesty as base", it is absolutely to be trust.
