This is a 3-ported, normally closed, double blocking poppet type logic element, with port 1 connected to port 3 through an orifice. By opening port 3 to tank, flow can pass from port 1 to port 2 but not from port 2 to port 1. Closing port 3 will prevent the valve from opening from port 1 to port 2.
The area ratio between port 1 and 3 is 1 to 1 and port 2 is balanced between the seat diameter and the seal poppet diameter. By controlling the flow or pressure out of port 3 the valve can be used as an on/ off valve or in a pressure control function.
This is a 3-ported, normally closed, double blocking poppet type logic element, with port 1 connected to port 3 through an orifice. By opening port 3 to tank, flow can pass from port 1 to port 2 but not from port 2 to port 1. Closing port 3 will prevent the valve from opening from port 1 to port 2.
The area ratio between port 1 and 3 is 1 to 1 and port 2 is balanced between the seat diameter and the seal poppet diameter. By controlling the flow or pressure out of port 3 the valve can be used as an on/ off valve or in a pressure control function.