1) angle stop valve: in the angle stop valve, the fluid needs to be changed only once, so that the pressure passing through this valve is smaller than the conventional cut-off valve.
2) DC shut-off valve: in the DC or Y type cut-off valve, the flow channel of the valve body is a slash line with the main channel, so that the damage degree of the activity is smaller than the conventional cut-off valve, and the pressure loss through the valve is also smaller.
3) plunger stop valve: the cut-off valve in this way is the variant of the conventional cut-off valve. In this valve, the disc and valve seat are usually planned according to the principle of plunger. The disc is burnished and the cylindrical plug is connected with the stem. The seal is completed by two elastic seals on the plunger. Two elastic sealing rings of cock valve are separated from one sleeve ring and pressed by the load exerted on the valve cover by the bonnet nut, and the sealing ring around the plunger is pressed. The elastic sealing ring can be replaced and can be made from a variety of materials. The valve is first used for opening and closing, but with a special type of plunger or special ring, it can also be used to adjust the flow.