You'll enjoy the accumulator ... Don't know what you paid for it,
but fodder for others contemplating this upgrade. Menards or Lowes carry a 2 gallon pressure tank for around $50 and it is compatible with an RV water system. All you need is a 1/2" Sharkbite Tee for the bottom on a vertical mount and a strap hand formed out of light gauge metal to hold it to a wall or stud. Eliminates the instant on from your water pump after opening a faucet or flushing the stool. Here's a link from about 6 yr ago.
https://www.montanaowners.com/forums...ht=accumulator
PS ... both examples so far in this post are self draining when winterizing time comes.