建議您讀一下這個資料
https://www.plbg.com/forum/read.php?1,522419
https://www.orlando-plumber-services.com/blog/orlando-plumbing-what-is-a-manabloc/
Those are the pros; now the cons of the Manabloc.
- Most of the older Manabloc systems are installed with polybutylene. This pipe has a history of failing and causing plumbing leaks.