Patent ID: 6409145
Filing Date: 2002-06-25
Classification: F16K

Abstract:
A valve assembly comprising:a tube having a forward end and an opposite rearward end; a valve seat connected to said forward end; a main body connected to said rearward end, said main body having an end, an abutment being located in said tube at said end of said main body; a plunger assembly located within said tube, said plunger assembly comprising: a plunger body having a central bore; a rod partially received in said central bore, said rod having a first end and an opposite second end, wherein said first end is located in said central bore, and wherein a spring pocket is defined between said first end and said abutment, said plunger body and said rod collectively forming a plunger; and a spring located in said spring pocket; seal means for sealing said valve seat in response to said spring compression force, said seal means being located at said second end of said rod; and actuation means for selectively forcing said plunger toward said main body, whereupon movement of said rod toward said main body results in said seal means becoming unsealed in relation to said valve seat; wherein a press-fit between said rod and said central bore provides a compression of said spring between said first end and said abutment such that a resulting spring compression force equals a preset spring force pre-load; and wherein said connection of said rearward end of said tube to said main body is selectively positioned relative to each other so as to provide a predetermined plunger travel cavity between said plunger body and said abutment.