Patent ID: 9249891
Filing Date: 2016-02-02
CPC Classification: F16K,Y10T

Claim Text:
1. A valve having secondary spring force containment comprising: a) a valve body featuring an opening; b) a valve closure member sized to close the opening of the valve body; c) a stem having a first end and a second end, the first end of the stem connected to the valve closure member; d) a proximal spring seat positioned adjacent to the valve body; e) a distal spring seat mounted on the second end of the stem; f) a compression coil spring positioned between the proximal and distal spring seats so that said valve closure member is urged into a position where the valve body opening is closed; g) a hollow rod attached between the proximal and distal spring seats with said stem passing through the hollow rod; and h) said stem causing the spring to be compressed to a greater extent than the hollow rod so that the hollow rod retains the spring in a partially compressed state if the stem is released from the proximal or distal spring seat.