Original Factory 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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Our commission is to serve our users and clients with best quality and competitive portable digital products for Brass Thermostatic Expansion Valve , Water Pipe Gate Valve , Piston Rings For Chevrolet Impala , We're prepared to present you with the most effective ideas over the designs of the orders in a qualified way for those who need. While in the meantime, we continue to keep on producing new technologies and building new designs so as to help make you ahead from the line of this small business.
Original Factory 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:

Original Factory Ball Valve -
 piston ring – DONGYI detail pictures

Original Factory Ball Valve -
 piston ring – DONGYI detail pictures


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We have now a specialist, efficiency staff to provide good quality company for our consumer. We normally follow the tenet of customer-oriented, details-focused for Original Factory Ball Valve - piston ring – DONGYI, The product will supply to all over the world, such as: French , Hyderabad , Luxemburg , We focus on providing service for our clients as a key element in strengthening our long-term relationships. Our continual availability of high grade products in combination with our excellent pre-sale and after-sales service ensures strong competitiveness in an increasingly globalized market. We are willing to cooperate with business friends from at home and abroad and create a great future together.
  • Good quality, reasonable prices, rich variety and perfect after-sales service, it's nice!
    5 Stars By Renee from Mexico - 2018.06.30 17:29
    We are old friends, the company's product quality has been always very good and this time the price is also very cheap.
    5 Stars By Lena from Moldova - 2018.02.08 16:45
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