Small-bore forged steel high-pressure top-entry fixed ball valve

Abstract

This utility model relates to the field of ball valve technology, and in particular to a small-diameter forged steel high-pressure top-mounted fixed ball valve; comprising: a valve body, including an upper valve body and a lower valve body, the lower valve body including an installation port, an inlet, and an outlet; a valve stem, rotatably mounted on the upper valve body; a valve ball, fixedly connected to the valve stem and placed inside the installation port; a valve seat, slidably disposed inside the inlet and outlet, located on both sides of the valve ball, and having an abutment spring on one side of the valve seat; and a shaped sealing ring, sleeved on the valve stem, the shaped sealing ring including: a first sealing part, the first sealing part abutting against the valve seat; a second sealing part, the second sealing part abutting against the outer wall of the valve stem; and a third sealing part, the third sealing part abutting against the inner wall of the installation port; this utility model, by using the cooperation of the shaped sealing ring and the valve stem, prevents liquid from flowing out between the valve body and the valve stem, and can seal a relatively wide gap through the abutment action between the valve seat and the shaped sealing ring.

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