Just turning up the pressure switch from 30/50 to 40/60 will help with the low pressure problem. Then adding a CSV will help even more. Increasing the size of your sprinkler nozzles will actually make the pressure lower.
When the pump is cycling on and off between 40 and 60, as most people think is normal cycling, the pressure in the house seems low. This is because half the time your pressure is increasing to 60 and the other half the pressure is decreasing to 40. When the pressure is swinging between 40 and 60, you have an "average" of 50. With a CSV, as long as you are using water you have a "constant" 50. No swinging back and forth from 40 to 60 with the pressure. A constant 50 is much stronger pressure in the house than an average 50.
Cycling on and off 3 times in 5 minutes can add up to hundreds of cycles per day. Not only does this cycling make the presure seem low in the house, but it will destroy your pump, motor, pressure tank, switches, relays, check valves, and even hammers on the faucets, valves, and fittings in the house.
I have added a 50 PSI Cycle Stop Valve to systems that were already cycling from 40/60. And even though we didn't increase the pressure at all, the customers told me the constant pressure made the shower feel so strong that they no longer need soap, because the good pressure will just blast the dirt off a person.
