【要注意】固着した止水栓、無理に回すと給水管が折れる！原因と修理方法

[Correction] In the video, we stated that "general spiral-type pipe extractors cannot be used in elbows." However, subsequent testing has confirmed that they can be used inside elbows in typical break locations. If the pipe is broken at the back of the elbow, the deeper insertion may cause interference depending on the shape of the extractor. However, it worked without problems in typical break locations. We apologize for the misleading wording. We will continue to conduct practical tests and strive to provide accurate information. 0:00 Forcing a stuck shut-off valve is dangerous 0:23 Check first! Check the fitting by shifting the feed washer 0:32 Why brown sealing tape requires caution 1:12 Why using a Zarbo reduces the risk 1:29 Why even Zarbo isn't safe (desiccant corrosion/stress corrosion cracking) 2:18 What to always do before turning the shut-off valve 3:10 Removing a broken screw with an extractor 3:58 Precautions when using an extractor 5:25 Cleaning the inside of the socket 5:33 Repairing the screw threads with a pipe tap 5:55 How to use threading oil 6:57 The importance of flushing with water 7:53 Use a pipe tap like a PT (tapered thread) 8:05 Points to check in old buildings 8:20 Tool storage and maintenance 8:28 Summary and related video guide Trying to force a stuck shut-off valve to turn, the water supply pipe snaps inside the wall— This is a common problem in old buildings. This time, we'll explain in detail why water supply pipes break at the base, how to check by shifting the feed washer, the difference between lined sockets and sarbo sockets, and how to repair them if they actually break. Especially with older pipes, even if they look clean, the inside may be damaged. The sealing tape is discolored brown. Iron lined sockets are used. The shut-off valve hasn't been turned even once in many years. These are signs to be careful. The video explains, with demonstrations, the following: ✅ How to identify dangerous fittings ✅ Causes of galvanic corrosion, dezincification corrosion, and stress corrosion cracking ✅ How to remove a broken water supply pipe ✅ How to use an extractor ✅ Repairing threads with a pipe tap ✅ Key points for water flushing ✅ How to safely restore the pipe When a shut-off valve is stiff, don't think "Will it turn?" but rather "It might break." This awareness is very important. We hope this will be helpful for those maintaining old buildings or doing DIY repairs. Please also check out our previously released video, "Safe Way to Turn a Stuck Shut-off Valve." If you found this video helpful, please give it a thumbs up and subscribe to our channel. [Related Videos]    • 【修理DIY】固着して回せない止水栓の直し方      • 【修理DIY】ドライバーで回せない固着した止水栓を簡単に直す方法      • 【修理DIY】固着した止水栓に傷を付けずに回す工具      • 【止水栓固着】固着した止水栓にバイスはアリ？使い方を解説   *Each product link participates in and uses the Amazon Associates Program and Rakuten Affiliate Program. [Parts and Tools Used] TONEX Pipe Tap 1/2 x 14 PT1/2 [Amazon] https://amzn.to/4fq0NHK [Rakuten Market] https://a.r10.to/hk7Vht Bent Pipe Puller 15A (1/2) (Water Supply Reverse Tap) [Amazon] https://amzn.to/4eVOqDn [Rakuten Market] https://a.r10.to/hNy2te Lobtex Hybrid Monkey Wrench X W-ZERO UM36XGB [Amazon] https://amzn.to/4tCOHOY [Rakuten Market] https://a.r10.to/hgJ5oo ASOH Hose Nipple PT1/2 x Φ16 (RoHS) [Amazon] https://amzn.to/4uaDhmF [Rakuten Market] https://a.r10.to/h5EoM7 Asada ST014 ST Threading Oil 0.3L [Amazon] https://amzn.to/490Ohe6 [Rakuten Market] https://a.r10.to/hkGWFb #Water Stop Valve #Extractor #Pipe Tap