2018 Latest Design Pneumatic Ball Valve - piston ring – DONGYI

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Tribologically advantageous materials Gas-tight construction for low-molecular-weight gases piston rings seal the gas in the compression chamber of reciprocating compressors. They are customized, in terms of design and material, to the respective application conditions in refineries, the natural gas industry, as well as the petrochemical and chemical industries. The precisely manufactured rings also allow reliable operation with a long service life in industrial air production and many areas...


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We depend on sturdy technical force and continually create sophisticated technologies to meet the demand of Plastic Pneumatic Valve , Butt Weld Needle Valve , Piston Ring 35mm , We will do our best to meet or exceed customers' requirements with quality products, advanced concept, and efficient and timely service. We welcome all customers.
2018 Latest Design Pneumatic Ball Valve - piston ring – DONGYI Detail:

Tribologically advantageous materials
Gas-tight construction for low-molecular-weight gases

piston rings seal the gas in the compression chamber of reciprocating compressors. They are customized, in terms of design and material, to the respective application conditions in refineries, the natural gas industry, as well as the petrochemical and chemical industries. The precisely manufactured rings also allow reliable operation with a long service life in industrial air production and many areas of process engineering.

Piston rings, rider rings and bands are manufactured in various designs:

One-piece or segmental straight
Angle cut
Step cut
Twin Ring™
Double Twin Ring™
Two Segment
Pressure balanced
designs rings and has developed specific combinations for particularly problematic and demanding applications. This has also included numerous successful conversions from lubricated to non-lubricated operation.Pressure balanced rings are available, when deemed appropriate for high pressure applications and piston/rider ring combinations are also available for more specific applications.

Large diameter piston rings up to 47” (1200mm) are custom manufactured for special requirements. A range of metallic piston and rider rings are also manufactured, using selected grades of bronze or cast iron, where operational requirements dictate.


Product detail pictures:

2018 Latest Design Pneumatic Ball Valve -
 piston ring – DONGYI detail pictures

2018 Latest Design Pneumatic Ball Valve -
 piston ring – DONGYI detail pictures


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Our products are broadly regarded and reliable by end users and can meet up with constantly transforming financial and social requires of 2018 Latest Design Pneumatic Ball Valve - piston ring – DONGYI, The product will supply to all over the world, such as: Greece , Portland , Palestine , Providing Quality Items, Excellent Service, Competitive Prices and Prompt Delivery. Our products and solutions are selling well both in domestic and foreign markets. Our company is trying to be one important suppliers in China.
  • We always believe that the details decides the company's product quality, in this respect, the company conform our requirements and the goods are meet our expectations.
    5 Stars By Fiona from Japan - 2018.09.12 17:18
    The company has a good reputation in this industry, and finally it tured out that choose them is a good choice.
    5 Stars By Belle from Italy - 2017.10.27 12:12
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