Patent ID: 8656953
Filing Date: 2014-02-25
Classification: F16K,G05D,Y10T

Abstract:
1. A combination manual/pneumatic valve for a fluid control assembly, the valve comprising: a housing; a valve chamber disposed in said housing, said valve chamber having a fluid inlet and a fluid outlet; a pneumatically driven actuator adapted to move the valve, in response to a pneumatic signal, between a first state in which flow of fluid between the fluid inlet and the fluid outlet is stopped, and a second state in which flow of fluid between the fluid inlet and the fluid outlet is permitted; a handle adapted to move said valve from the second state into the first state, regardless of whether the pneumatic signal is present at the actuator, an expansion chamber; an inlet within the housing adapted to receive the pneumatic signal, and an outlet within the housing, the outlet connected to atmosphere, wherein the inlet is different from the outlet, and the handle is movable to allow only one of the inlet or the outlet to be in communication with the expansion chamber.