... valve use - protect your faucet and hose, water control switch, decompression, a leading on to two vanities, ... it is very important.Angle's role:1, control pressure, control the size of the role of water, with ... by adjusting the angle valve, you can easily control the water pressure, and also to protect Hose of ... valve, so the family also followed the cease-fire, and it is because you do not separate ...