An automated milking stall unit comprising: a teat dip delivery system comprising an automated teat dip manifold, which comprises a conduit (86, 124) fluidically coupled to a rinsing fluid supply line via a rinsing fluid valve and fluidically coupled to an air supply line via an air valve; an upstream valve having a closed position and an open position, wherein the upstream valve is a two-position, three-way valve and has a first inlet configured to receive teat dip, a second inlet coupled to said conduit (86, 124), and an outlet, wherein the second inlet and the outlet are open to each other when the upstream valve is in the closed position; a downstream valve in fluid communication with said conduit (86, 124) having a closed position and an open position, wherein the downstream valve has an inlet coupled to the outlet of the upstream valve and an outlet coupled to a delivery line and a vent disposed between the inlet and the outlet to create a block-bleed-block arrangement; and a pressure monitor in communication with said conduit (86, 124) to sense pressure in the conduit (86, 124) when the upstream valve is in the closed position and the downstream valve is in the closed position; and the automated milking stall unit comprising a controller coupled to the upstream valve, the downstream valve, and the pressure monitor, wherein the controller is configured to control the upstream and downstream valves (100, 102) into the closed position, receive the sensed pressure in the conduit (86, 124) from the pressure monitor while the upstream valve is closed to teat dip at inlet and the downstream valve is closed for all fluids except at the vent, and to deactivate all or any portions of the teat dip delivery system depending on the received sensed pressure in the conduit (86, 124). a teat dip delivery system comprising an automated teat dip manifold, which comprises a conduit (86, 124) fluidically coupled to a rinsing fluid supply line via a rinsing fluid valve and fluidically coupled to an air supply line via an air valve; an upstream valve having a closed position and an open position, wherein the upstream valve is a two-position, three-way valve and has a first inlet configured to receive teat dip, a second inlet coupled to said conduit (86, 124), and an outlet, wherein the second inlet and the outlet are open to each other when the upstream valve is in the closed position; a downstream valve in fluid communication with said conduit (86, 124) having a closed position and an open position, wherein the downstream valve has an inlet coupled to the outlet of the upstream valve and an outlet coupled to a delivery line and a vent disposed between the inlet and the outlet to create a block-bleed-block arrangement; and a pressure monitor in communication with said conduit (86, 124) to sense pressure in the conduit (86, 124) when the upstream valve is in the closed position and the downstream valve is in the closed position; and a conduit (86, 124) fluidically coupled to a rinsing fluid supply line via a rinsing fluid valve and fluidically coupled to an air supply line via an air valve; an upstream valve having a closed position and an open position, wherein the upstream valve is a two-position, three-way valve and has a first inlet configured to receive teat dip, a second inlet coupled to said conduit (86, 124), and an outlet, wherein the second inlet and the outlet are open to each other when the upstream valve is in the closed position; a downstream valve in fluid communication with said conduit (86, 124) having a closed position and an open position, wherein the downstream valve has an inlet coupled to the outlet of the upstream valve and an outlet coupled to a delivery line and a vent disposed between the inlet and the outlet to create a block-bleed-block arrangement; and a pressure monitor in communication with said conduit (86, 124) to sense pressure in the conduit (86, 124) when the upstream valve is in the closed position and the downstream valve is in the closed position; and the automated milking stall unit comprising a controller coupled to the upstream valve, the downstream valve, and the pressure monitor, wherein the controller is configured to control the upstream and downstream valves (100, 102) into the closed position, receive the sensed pressure in the conduit (86, 124) from the pressure monitor while the upstream valve is closed to teat dip at inlet and the downstream valve is closed for all fluids except at the vent, and to deactivate all or any portions of the teat dip delivery system depending on the received sensed pressure in the conduit (86, 124).