7 psi will overcome the spring pressure

The unit can be mounted within any wall surface that has a rough opening that is 15-7/8 inches in width by 26-1/4 inches in height by 4 inches in depth

A fixed nozzle feature keeps the pump nozzle and spout from shifting during use

Bristles will not stain

Converter- Delta 060683A

Dayton 3 HP, General Purpose Motor, 3-Phase, 3490 Nameplate RPM, 230/460 Voltage, 143-5TC/56HCZ Frame - 31TU29 Nominal Size-40" X 1.5" 7 psi will overcome theMotor is inverter rated, meets NEMA MG 1 Part 31; 10: 1 variable and 4: 1 constant torque. Includes Dayton integral and fractional HP motor installation guide.