I have a Lochinvar booster heater for a commercial dishwasher. The pressure reducing valve needs replacement. It is a Watts Z2 set at 20 psi. Im looking at Watts valves. There is a Watts U5B-Z3 setting 10 - 30 psi. There is also A Watts N55B 25 - 75 psi. I dont know of any major differeces other than pressure range and price. Can I use the N55B?