JP1765166S - 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 first axial direction and having a proximal end and a distal end at both ends thereof, and having the output port at the proximal end; A joint part A is externally fitted to the center body so as to be rotatable about a first axis; It has a joint part B fitted externally so as to be rotatable around an axis, and the joint part C connected to the joint part B so as to be rotatable around a second axis orthogonal to the first axis. There is. In the joint part A, the pilot port extends integrally in a direction perpendicular to the first axis, and in the joint part C, the input port extends integrally in a direction perpendicular to the second axis. has been done.