I have a ½ HP 115V/230V 1PH 60Hz water pump (inside my house) that starts and stops hard. It is connected to a simple on/off pressure switch. The noise at startup is jarring. The quarter-turn ball valve shutoff between the supply and the pump has now sprung a leak twice (first on the output side, now on the input side) which leads me to believe there is at least some water hammer effect in play when the pump cuts out (there is now a tiny jet of water for 1-2 seconds from the input-side leak when the pump cuts out, otherwise a steady drip). The water supply coming in to the whole system is probably at around 5 PSI from a shallow well via several hundred feet of 1½" ABS pipe.
Here's an attempt at a visual representation of the configuration:
shallow dug well ↓ 200-300' 1½" ABS ↓ ball-valve shut-off ↓ check valve ↓ ½ HP water pump ↓ /---------------------------------\ ↓ ↓ ↓ 20 G pressure tank ↓ ↓ ↓ ↓ 1" cold water manifold ↓ ↓ 1½" outdoor supply line ↓ ball-valve shutoff ↓ frost-free spigots
Are these problems that would be alleviated by a soft start water pump? If so, can the current pump be adapted to a soft start system or is a pump that is natively soft start required?