请问：我在修理煤气热水炉进水管

为什么我把煤气热水炉进水龙头关了，但在使用其他任何水龙头

（如浴室、厨房、等）的冷水龙头、关掉冷水水龙头后，热水龙头有差不多等量的溜出来？

不是已经关了热水炉进龙头了吗？为啥还是有水流经热水炉？

 

where is your water heater

波大：我进水管连接口的螺丝还是打不开，可不可以用heat？烧一下螺丝也许会松动？连接口没啥东西会烧坏的吧？

那你得把气关了吧。

扳手再套个铁管把力矩加大一些

try WD40

or disconnect at upstream connector. (get ready to turn whole house water valve in case water valve to water heater is not good enough.)

As for the initial question you asked, not sure if there is still pressure at hot water pipe in the whole house. You did not tell history. 

Catridge could mix hot and cold water slightly. In other words, you may still get water (cold) coming out of your hot water tab when you turned off waterline into hot water heater. 

 

关了

我买了这个

 

 

还是拧不开

谢谢。你们有办法拧开这螺丝吗？我买了钳子、除锈油都没用哈

家里没人拧得开

 

 

 

 

事情第一步就卡在这儿了

it does not look to be too bad shape.

you will have to have some one to hold the tank from moving when you try to unscrew the nut.

Use shock force to lossen. The wrench is of good size and should work.

谢谢。如果还是拧不开的话，我可以用喷枪加热吗？不会烧毁坏里面的啥部件吧

你这水桶有多少年了。

worse case get another one..

热水炉用了5年多吧。我只是进水管漏，换条管子啊，不用整个都换吧，哈哈啥

波教授， Is plumber wrench better for such screw?

I would use a rubber hamber and tap on end of wrench to knock it loose after rust remover spray. I don't understand why she would use lubricant. 

你热水炉里的水放空了吗？

因为那螺丝还未松动，每天喷点除锈剂，等待中

总水龙口未断水，只把热水炉冷水进水龙头关了，但炉里的水放不完～～～不知为啥我一开厨房冷水，用完关紧冷水，马上热水龙头流出差不多量的水来

（我已熄煤气了）

leave open at least one faucet each floor to drain water until d

你得用二把扳手。煤气炉旁动明火，就是放火！