An unloader valve comprising: a seat including a plurality of inlet apertures , each inlet aperture spaced apart from the other inlet apertures and extending through the seat along one of a plurality of parallel inlet axes; a manifold plate fixedly connected to the seat , the manifold plate including a plurality of outlet apertures , each outlet aperture spaced apart from the other outlet apertures and extending through the manifold plate along one of a plurality of parallel outlet axes; a plurality of blind plug holes , each blind plug hole centrally aligned along one of the inlet axis of the plurality of parallel inlet axes; a control chamber formed in the manifold plate ; and a control space defined by the manifold plate and arranged to fluidly connect the control chamber and each of the blind plug holes to one another; a control member disposed within the control chamber and movable between a first position in which the control space is exposed to a pressure source, and a second position in which the control space is isolated; and a plurality of plugs , each plug positioned within one of the blind plug holes and movable between a closed position in which each plug closes one of the inlet apertures and an open position in which the plurality of inlet apertures are in fluid communication with the plurality of outlet apertures . a seat including a plurality of inlet apertures , each inlet aperture spaced apart from the other inlet apertures and extending through the seat along one of a plurality of parallel inlet axes; a manifold plate fixedly connected to the seat , the manifold plate including a plurality of outlet apertures , each outlet aperture spaced apart from the other outlet apertures and extending through the manifold plate along one of a plurality of parallel outlet axes; a plurality of blind plug holes , each blind plug hole centrally aligned along one of the inlet axis of the plurality of parallel inlet axes; a control chamber formed in the manifold plate ; and a control space defined by the manifold plate and arranged to fluidly connect the control chamber and each of the blind plug holes to one another; a plurality of outlet apertures , each outlet aperture spaced apart from the other outlet apertures and extending through the manifold plate along one of a plurality of parallel outlet axes; a plurality of blind plug holes , each blind plug hole centrally aligned along one of the inlet axis of the plurality of parallel inlet axes; a control chamber formed in the manifold plate ; and a control space defined by the manifold plate and arranged to fluidly connect the control chamber and each of the blind plug holes to one another; a control member disposed within the control chamber and movable between a first position in which the control space is exposed to a pressure source, and a second position in which the control space is isolated; and a plurality of plugs , each plug positioned within one of the blind plug holes and movable between a closed position in which each plug closes one of the inlet apertures and an open position in which the plurality of inlet apertures are in fluid communication with the plurality of outlet apertures . <EOS>