wash liquid exiting the pressure dome 42 via recirculating spray nozzle hose 48 and being emitted to the wash basket 28 via recirculating spray nozzle 32 pressure dome 42 provides a head of pressure varying dependent upon the amount of wash liquid contained in the recirculating wash system by maintaining a captured dome of air in communication with the recirculating wash liquid the pressure dome 42 provides a channel for the captured air to keep in contact with pressure sensor 46 via pressure line 45 pressure sensor 46 provides optionally either an on off or a varying or dynamic signal to control 22 via lines 47 the signal varying dependent on the sensed pressure of the recirculating wash liquid control 22 also optionally receives a static pressure signal from deepfill transducer dome 50 via lines 52 for signaling the level of wash liquid within wash tub 12 however the invention disclosed herein may be practiced without use of a deepfill pressure dome control 22 is further operable to receive input signals via lines 49 including signals from valves 21 62 64 and 66 providing on and off times for these valves by sensing the air pressure within pressure dome 42 the amount of recirculating wash liquid in the.