Pneumatic drives for axisymmetrical valves
Pneumatic drives are designed to control axisymmetrical valves which regulate the flow rate and pressure of natural, petroleum, and artificial hydrocarbon gases.
The pneumatic drives together with valves are used on process pipelines; process pipings of compressor stations, booster compressor stations, and underground gas storage facilities; sections of gas pipelines from gas production, generation, and storage sites.
General characteristics
The pneumatic drives for axisymmetrical valves of categories B, I, II, III, and IV according to SP 36.13330.2012 are manufactured as per TU 3791-046-38438360-2015. The hazard class is 3 as per GOST 12.1.007; the explosion category and group is IIA as per GOST 30852.11 (IEC 60079-12).
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Control drive type
| PZR - shut-off and control drive, PO - cut-off drive, PA - surge drive |
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Nominal diameter of cylinder
| DN 150-800 mm |
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Nominal pressure of control medium
| PN 0.4-1 MPa |
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Supply pressure
| PN 1-10 MPa |
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Piston stroke
| 100-500 mm |
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Drive type
| NO - normally open, NC - normally closed, F - fixed |
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Valve connection type as per DIN/ISO 5210
| F16-F25 |
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Drive force
| 340-13 000 kgf |
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Seismic design
| S - seismic resistant, S0 - non-seismic resistant |
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Mechanism
| Spring, double acting |
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Climatic design for zones with moderate climate
| N at ambient temperature -40 to +50℃ |
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Climatic design for zones with cold climate
| F at ambient temperature –60 to +45℃ |
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For all climatic designs
| Placement category 1 according to GOST 15150 |
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Control media
| Compressed air as per GOST 17433 for class 9 or non-corrosive natural gas |
