Method of shutting off water sands in wellsPew Thomas WUS2087297 * Apr 24, 1935 Jul 20, 1937 Pew Thomas W Method of shutting off water sands in wells
If you notice a leak, you can shut off the water at the main shutoff valve and call a plumber to come fix the leak. 2.Do I need to shut off the water in my crawlspace? Yes. Shutting off the water will help ensure that you don’t flood your crawlspace or cause water damage to ...
FIXTURE FOR SHUTTING OFF WATER, STRUCTURE FOR JOIN 优质文献 相似文献Roof drain device for protection against the reek of sewage and backwater a reciprocating pipe sealing device joining the top of the opening and shutting valve reciprocating pipe to the outside of the support shaft in the waterti...
网络封闭水层 网络释义 1. 封闭水层 翻译项目网|翻译人才网—... ... shutting-off device 关闭装置shutting-off water封闭水层shuttle imaging radar 航天成象雷达 ... www.eeso.net|基于14个网页
When to Turn the Water Heater Off Customers ask us all the time, “should I turn off my water heater if I have already turned off the main water supply?” There is no set answer to this. Just as there are a variety of scenarios that would cause you to have to turn off your main...
United States Patent US3241613 Note: If you have problems viewing the PDF, please make sure you have the latest version ofAdobe Acrobat. Back to full text
1) shutting-off water 封闭水层2) water exclusion 水层封闭3) confined aquifer 封闭含水层4) seal water-bearing seam 含水层封闭5) closed waterproof layer 防水封闭层 1. Evaluation on permeability of closed waterproof layer of asphalt mixture in ballastless track 无碴轨道沥青混合料防水封闭...
When the container stores water to the predefined water level, the water valve is automatically shut, and simultaneously the non emergency use of the water valve is not influenced. The utility model can be used for families with scant supply of water or other situations which often need to ...
Device for shutting off and aerating a pipeline, in particular a back-siphonage preventer for drinking-water lines, which comprises the control body 1 and a control bushing 29 which is spring-loaded thereon, such that it can be displaced axially between a throughflow position and a separating ...
申请(专利权)人: NIPPON BIDEO SENTAA KK 发明人: K Tadami 摘要: PURPOSE:Opening and shutting control of the electric circuit for operating humidifier used with household airconditioner is made with the humidity indication of the indicator humidity meter in the same apparatus as norm.收藏...