F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
137/37
F15B 13/043 (2006.01) F16K 27/00 (2006.01)
Patent
CA 1322511
VALVE APPARATUS ABSTRACT OF THE DISCLOSURE The valve apparatus has a poppet valve engaging a valve seat to seal an outlet port from an inlet port thereof. A piston is reciprocable within a piston chamber, and first and second piston ports communicate with opposite sides of the piston. The piston cooperates with the poppet valve and is biased to an extreme position thereof, in opposition to force from a fluid signal applied to the piston through one of the piston ports. The valve configuration can be changed in the field to be either normally-open or normally-closed by re-positioning the piston biasing and redirecting fluid into the appropriate piston port using an interchangeable piston port distributing structure. The valve can be solenoid actuated, manually operated or pilot-pressure actuated from an adjacent valve, and the type of valve actuation can also be changed in the field. Also, a supply manifold member is secured to the inlet port of the valve to supply fluid thereto. Similar manifold members can be connected together, and similar valves can be connected to respective manifold members to receive air from the same supply.
612202
Bull Housser & Tupper Llp
Kobelt Jacob
LandOfFree
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