The double-headed valve is a two-way valve. The main differences between it and the three-way valve are as follows:
The double-head valve is a two-way valve, while the three-way valve is a three-way valve; the double-head valve generally plays the role of blocking flow, while the three-way valve can play the role of both blocking and reversing; When the valve is installed, there is only one installation direction, and there are many installation methods for the three-way valve. There is only one type of two-way valve, and three-way valve is also divided into two types: L-way and T-way.