CPC F16K 5/0435 (2013.01) [F16K 1/10 (2013.01); F16K 1/427 (2013.01); F16K 1/482 (2013.01); F16K 3/246 (2013.01); F16K 5/0464 (2013.01); F16K 27/065 (2013.01); F16K 31/508 (2013.01)] | 18 Claims |
1. A valve assembly for controlling a flow of a substance through the valve assembly, the valve assembly comprising:
a valve body defining an inlet, an outlet, and a volume therebetween;
a sleeve disposed in at least a portion of the volume, an interior of the sleeve having a first opening in fluid communication with the inlet and a second opening in communication with the outlet;
a seat ring releasably held in place in the valve body by pressure exerted by a lower end of the sleeve at at least one of the first opening or the second opening without the seat ring being secured by a mechanical fastener to the valve body;
a stem disposed in the sleeve;
a plug releasably engaged to the stem and configured to contact the seat ring to control the flow of the substance through the valve assembly;
an actuating subassembly that receives the stem and comprising a lower mounting flange having a lower mounting flange body that is threaded into the valve body; and
a dowel inserted in a wall of the sleeve at an upper end and in the lower mounting flange body to align the sleeve in the valve body.
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