| 1. | Shipbuilding - fuel oil tank self - closing drain valves 造船.燃油罐自闭式排油阀 |
| 2. | Transformers . liquid dielectric drain valves 变压器.液态电介质的放泄阀 |
| 3. | Leave the drain valve of the holding tank opened 让贮槽的排水阀打开。 |
| 4. | Shut off supply pressure and drain valve 关闭供水压力阀门和排水阀门。 |
| 5. | Automatic drain valves for standpipe systems 储水系统用自动排水阀 |
| 6. | J kind of flanged self - closing drain valves J类法兰自闭式放泄阀 |
| 7. | Open the water heater drain valve and the nearest hot water faucet 打开热水器排污阀和附近的热水水龙头。 |
| 8. | Close the drain valve and refill the tank , and restore power 关闭排污阀,重新向内胆注水,重新恢复电源。 |
| 9. | Connect a hose to the drain valve and terminate it to an adequate drain 用一条软管将排污阀连接到适当的排污口处。 |
| 10. | Drain out 5 gallons of water from the drain valve at the bottom of the heater 从热水器底部的排污阀排出大约5加仑的水。 |