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1. (WO2017039823) NEEDLE VALVE AND ASSOCIATED METHODS

Pub. No.:    WO/2017/039823    International Application No.:    PCT/US2016/040739
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Sat Jul 02 01:59:59 CEST 2016
IPC: F16K 31/50
F16K 5/08
F16K 5/10
F16K 31/44
F16K 31/60
F16K 31/72
Applicants: PRECISION HIGH PRESSURE, LLC
Inventors: HEMME, Kent, Richard
SHUMAN, Jeffrey, Paul
Title: NEEDLE VALVE AND ASSOCIATED METHODS
Abstract:
Exemplary embodiments are directed to a needle valve that generally includes a valve seat, a first stem in threaded engagement with a first stem thread, and a second stem in threaded engagement with a second stem thread. Rotation of the first stem advances the first stem and the second stem towards the valve seat by a distance that is equal to a combined thread pitch of the first stem thread and the second stem thread. Engagement of the first and second stems during rotation of the first stem defines a dual thread actuation mechanism.