4 type
3 type
5 type
2 type
Number of ports and position
Direction of flow
Maximum pressure of valve
Direction of pressure
Vacuum gauge
Pressure gauge
Fluid gauge
Pneumatic gauge
Needle restrictor
Longitudinal restrictor
Gap restrictor
Circumferential restrictor
10V- 140V
12V - 220V
15V - 200V
200V - 240V