Fuel control

In a fuel control for a gas turbine engine including a burner, fuel being supplied to said burner by a pump through a fluid pressure operated minimum pressure valve opened to allow fuel flow from said pump to said burner and closed to shut off said fuel flow, actuation of said minimum pressure valve being controlled by a sequence valve communicating with said minimum pressure valve by a fluid line, the improvement characterized by:

• said sequence valve being connected to pump discharge pressure by a pump discharge line and including a moveable valve element, the position thereof controlling the pressure in said fluid line, thereby determining the actuation of said minimum pressure valve, and further including a fluid latch comprising a piston connected to said valve element and communicating with said pump discharge pressure at said sequence valve through a fluid passage, pressurization of said piston in a first direction by said fuel maintaining said sequence valve element in a latched condition for maintenance of said minimum pressure valve in an opened condition to sustain fuel flow from said pump to said burner.