Valve plug

A valve plug capable of providing a fluid tight seal in systems with pressure of up to 6,000 psi when said valve plug is completely threaded into the fluid system comprising:

• a. a threaded cylindrical body having a flat front face at one end, said body being threaded where said front face is located, and said threaded cylindrical body having a sufficiently large diameter such that threads on said cylindrical body form a fluid tight seal around the outer circumference of said cylindrical body along a major length thereof, past which fluid of the fluid system cannot flow in most positions of said cylindrical body within a fluid system;
• and
• b. a shallow, unidirectional fluid expansion channel extending diametrically across said front face, said channel extending along a minor length of said cylindrical body for allowing fluid to pass past said cylindrical when the major length of said cylindrical body extends outside of a fluid system.

A valve plug using a threaded cylindrical body having a flat front face at one end, said front face comprising a shallow fluid expansion channel centrally located in said face and extending across said face, each end of said fluid expansion channel extending to the outer periphery of said cylindrical body, said cylindrical body having a tapered design with the smallest diameter at the end where said front face is located, and the largest diameter at the end opposite from said front face, said threaded cylindrical body having a sufficiently large diameter such that threads on said cylindrical body form a fluid tight seal around the outer circumference of said cylindrical body, past which fluid of the fluid system cannot flow in most positions of said cylindrical body within a fluid system.

A valve plug for installation in a pressurized fluid system comprising:

• a. a threaded, tapered cylindrical body having a substantially planar front face and a rear face, the diameter of said cylindrical body being smallest at the end having said front flat face and largest at the end having said rear face, said threaded cylindrical body having a sufficiently large diameter such that threads on said cylindrical body form a fluid tight seal around the outer circumference of said cylindrical body in most positions of said cylindrical body within a fluid system;
• and
• a shallow, unidirectional fluid expansion channel extending diametrically across said front face, said fluid expansion channel defined by two parallel side walls and a flat bottom surface, said channel allowing fluid of a fluid system to flow past said cylindrical body when a portion of said channel extends outside a fluid system.