How to connect the wastewater pipe of RO water purifier?

1. Connect the main engine with the filter element. 2. Install the RO membrane and tighten the joint and filter bottle with a suitable wrench. 3. Take out the pressure barrel, and install the small ball valve of the pressure barrel at the inlet and outlet of the pressure barrel (note: don't rotate it too tightly, which is easy to crack). 4. Install the faucet in the proper position of the water tank (put the washer on the main shaft of the faucet head and put the faucet at the hole of the water tank. ) 5 ....