Patent ID: 6874533
Filing Date: 2005-04-05
Classification: F15B,F16K,Y10T

Abstract:
1. A 3/2 normally closed module, comprising: a main body including a bore having a longitudinal axis associated therewith, said main body further including an armature selectively axially slidable within said bore, said main body further including a rod affixed to a first end of said armature whereby said rod is axially slidable with said armature; and a housing configured to receive a first ball, said housing including a first and a second valve seat, said first ball being selectively urged into engagement with said first valve seat, said housing further being configured to receive a second ball, said second ball being selectively being urged into disengagement from said second valve seat, said housing further including a supply port configured to cooperate with said first ball and said second ball to selectively permit fluid flow into said module, said housing further including a control port in selective communication with said supply port whereby when said module is in a selectively energized state, fluid flows between said supply port and said control port, said housing further including an exhaust port in selective communication with said control port whereby when said module is in a selectively de-energized state, fluid flows between said exhaust port and said control port, said supply port being concentric with said longitudinal axis, said module further including a first spring disposed between said main body and a second end of said armature opposite said first end, said housing further including a second spring proximate said supply port and disposed between said housing and said second ball, said second spring having a preload force urging said second ball toward said second valve seat.