 |
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| motor valve (на буровой установке); piston operated valve (пневматическим или гидравлическим) | |||
| geared valve; geared gate valve | |||
| |||
| motor valve | |||
| задвижка с приводом: 36 phrases in 13 subjects |
| Astronautics | 1 |
| Caspian | 1 |
| Construction | 3 |
| Drilling | 2 |
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| Oil and gas | 7 |
| Oil and gas technology | 4 |
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