Well-designed Electric Ball 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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"Sincerity, Innovation, Rigorousness, and Efficiency" is definitely the persistent conception of our corporation to the long-term to establish alongside one another with customers for mutual reciprocity and mutual profit for Well-designed Electric Ball Valve - rider ring – DONGYI, The product will supply to all over the world, such as: Israel , Bangladesh , Nigeria , After years of development, we have formed strong ability in new product development and strict quality control system to ensure excellent quality and service. With the support of many long term cooperated customers, our products are welcomed all over the world.

The company leader recept us warmly, through a meticulous and thorough discussion, we signed a purchase order. Hope to cooperate smoothly
