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1. (WO2018039148) MULTI-CONE, MULTI-STAGE SPRAY NOZZLE

Pub. No.:    WO/2018/039148    International Application No.:    PCT/US2017/047880
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Wed Aug 23 01:59:59 CEST 2017
IPC: B05B 1/30
B05B 1/32
F22G 5/12
B05B 1/14
Applicants: FISHER CONTROLS INTERNATIONAL LLC
Inventors: QIU, Yan
GOODWIN, Justin, Paul
Title: MULTI-CONE, MULTI-STAGE SPRAY NOZZLE
Abstract:
A multi-cone, multi-stage spray nozzle includes a nozzle body (102), a valve stem (104) with a first valve head (128), and a second valve head (106) attached to the first valve head (128). The first valve stem (104) is biased into a closed position against a valve seat (120) of the nozzle body (102) by a bias device. The second valve head (106) is continuously open. Upon the application of a first fluid pressure, which is less than a threshold fluid pressure, the bias device (108) maintains the valve stem (104) in the closed position while the second valve head (106) is continuously open. And upon the application of a second fluid pressure, which is at least as great as the threshold fluid pressure, the valve stem (104) moves to an open position while the second valve head (106) remains continuously open.