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The diagonal tee is smoother, but it will be more reasonable to use the shunshui tee construction, and a 50 branch pipe can be divided into 2 pipes at most.
It is recommended to choose the pipe of the curved water trap, which can play the role of water seal and avoid odor!
The flow conditions of the shunshui oblique tee are good. Also try to use a 45-degree bend for turning. The premise is that there is enough space to install.
The upstairs sewer pipe, upstairs repair, it doesn't cost much, because it's downwater, there is no pressure, and it's okay to wrap it tightly with waterproof self-adhesive tape.
If there is a leak in the water supply pipe, it is best to replace the tee. It is difficult to solve the problem fundamentally by plugging the leak through some glue substances.
It can be tightly wrapped with waterproof tape (self-adhesive tape), because there is no pressure, it is perfectly fine.