A spray bar injector (100) including a spray bar (102) defining a longitudinal axis (A) and including a fluid inlet (104) and a plurality of spray outlet orifices (106) spaced apart longitudinally in a direction along the longitudinal axis (A). A check or spray valve (112) is operatively connected to each spray outlet orifice (106). A master valve (114) is in fluid communication with the fluid inlet (104), operatively connected to divert flow from the fluid inlet (104) into a first passage (116) and block flow into a second passage (118) in a first position to open the check valves (112) and issue a spray from the spray outlet orifices (106), and to divert flow from the fluid inlet (104) into the second passage (118) and block flow into the first passage (116) in a second position to close the check valves (112) and block issue of spray from the spray outlet orifices (106).
