Inventors:
Bruce C. Christensen - Marinette WI
Roy C. Emmes - Menominee MI
Assignee:
The Ansul Company - Marinette WI
International Classification:
A62C 3706
F16K 31163
Abstract:
A valve body contains a coaxially slidably valve element with a seal member at the upstream end and a pair of differential area pistons at the other end. Fluid passage means direct fluid from the upstream end to a zone between the pistons to cause the pistons to seat the seal member. An orifice in the downstream, larger area piston bleeds fluid to an accumulator of preselected volume. Once the pressure forces on the large piston balance, the pressure force on the small piston unseat the seal member.
