Axisymmetrical check valves
Axisymmetrical check valves are designed for installation as safety devices preventing the backflow of natural, petroleum, and artificial hydrocarbon gases.
These valves are used on process pipelines; process pipings of compressor stations, booster compressor stations, underground gas storage facilities as well as gas pipelines .
General characteristics
The valves are manufactured in accordance with TU 3742-039-38438360-2013. Among the design features of the valves, we can mention low resistance factor ensuring minimal outlet pressure loss of the medium flow; smooth closing of the gate, as well as low noise and vibration.
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Nominal size
| DN 100-1 400 mm |
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Rated pressure
| PN 8-25.0 MPa |
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Pipe connection type
| Flanged, welded |
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Gate tightness rated values as per Gazprom STO
| 2-4.1-212-2008. Upon request, they can be manufactured with tightness class EE, AA, A as per GOST 9544 |
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Seismic resistance
| Up to and including 9 points out of 12 points as per MSK-64 seismic scale |
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Climatic design as per GOST 15150
| N1, F1 |
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Operating media
| Non-corrosive natural gas |
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Operating media temperature
| -20 to +80℃ |
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Design life
| 30 years |
