| |||
flap valve; leaf valve; paddle valve | |||
hinge flap | |||
flap gate; hinged flap; flap screen; valve clapper (клапана DRE) | |||
clapper valve |
откидная заслонка: 6 phrases in 4 subjects |
Automated equipment | 2 |
Firefighting and fire-control systems | 1 |
Mechanic engineering | 2 |
Military | 1 |