Method for manufacturing a rotatable plug element and valve

Details Method for manufacturing a rotatable plug element and valve Method for manufacturing a rotatable plug element and valve

2006-07-25

2006-07-25

Ortiz, Angela (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

C264S250000, C264S254000, C264S255000, C264S267000, C164S094000, C164SDIG013

Reexamination Certificate

active

07081223

ABSTRACT:
A valve for controlling the flow of a gas therethrough which requires no machining in order to attain an effective seal between the valve seating surface and a rotatable plug element. The valve seat surface remains as cast while the plug consists of an overmolded plastic. The overmolding defines an array of pliable sealing ridges. The use of overmolding facilitates the use of cost-saving plastic materials, and obviates the need for expensive machining of the cooperating surfaces.

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