A method for making a water pressure test plug valve

A hydraulic test plug valve, comprising a valve body, an O-ring, a right plug plate, a left plug plate, a top tightening screw, a lifting ring screw, a valve core, a graphite sealing ring, a packing gasket, a four ring valve, a screw column, a nut, a cover plate ring, and a guide ring;
The valve body is provided with a fracture surface; The right blocking plate is attached to the right end face of the fracture, and an O-ring is set between the right blocking plate and the right end face of the fracture; The left blocking plate is attached to the left end surface of the fracture, and the top screw is connected to the left blocking plate with threads. The top screw head of the top screw is attached to the right blocking plate;
The valve core is set at the upper part of the fracture and connected to the cover plate ring through bolts and nuts; There are four open rings, packing gaskets, and graphite sealing rings arranged from top to bottom between the cover plate ring and the valve body, and the packing gaskets and graphite sealing rings are also located between the four open rings and the valve core; The right blocking plate, left blocking plate, and cover plate ring are all equipped with hanging ring screws;

The guide ring is equipped with a cylindrical guide wall, and the axial length of the guide wall is the same as the axial length of the fracture surface. The inner diameter of the guide wall is the same as the diameter of the valve body.
The preferred solution is that the top tightening screw head has a hexagonal structure on the side and a spherical surface on the top.
A further preferred solution is that the threaded engagement length between the top tightening screw and the left blocking plate is greater than the gap between the right blocking plate and the left blocking plate, which are tightly attached to the right and left end faces of the fracture.