General triangular valve is a bit of caliber
3/4 (straight valve) refers to 6 points, you can take 6 points of the water pipe (general household rarely use 6 square angle triangle valve, and into the household water mains and 6 points.)Water heater for water inlet and outlet generally uses 6 point straight valve.
1/2 refers to 4 points, you can take 4 points of the water pipe (generally used for water table faucet, toilet, 4 points out of the water heater, massage bathtubOn the shower room and shower screen, 1/2 is used in the general family
Triangular valve size:A 3/8 is a 3 point water hose (usually used for 3 taps on a water inlet) with 3 taps.
