JP1761828S - pilot operated check valve - Google Patents

Abstract

As shown in the "reference drawing," the article according to this design has an input port, an output port, and a pilot port, and the output port is connected to a fluid pressure device such as a solenoid valve. This is for supplying and discharging compressed fluid to and from the input port and the output port. Normally, flow from the input port to the output port is allowed, while flow from the output port to the output port is normally allowed. Flow towards the input port is blocked. When pilot air is input from the pilot port in an emergency or other necessary situation, the flow from the output port to the input port is allowed, thereby eliminating the compressed air remaining in the fluid pressure equipment. Fluid can be exhausted from the output port through the input port and the like. Further, as shown in the "reference drawing," this article includes a center body extending in the X-axis direction and having a base end and a distal end at both ends thereof, and having the output port at the base end; A joint part A is externally fitted to the body so as to be rotatable around the X-axis, and a joint part A is disposed on the proximal side of the joint part A in the X-axis direction and also rotates around the X-axis with respect to the center body. It has a joint part B that is movably fitted on the outside. In the joint part A, the pilot port extends integrally in a direction perpendicular to the X-axis, and in the joint part B, the input port extends integrally in a direction perpendicular to the X-axis. There is.