Waterpump not working

[Rich W.]

The limiting factor for volume is friction loss which is governed by the diameter of the pipe/hose and any restrictions in the appliances (this is very basic fire service stuff). At a fire scene the appliances might be manifolds, stand pipes, and/or master streams (1000+ gpm stuff). In an RV the appliances are faucets, toilets, shower heads, etc.

A pump that is capable of 5 gpm might not be able to flow it’s rated capacity through 1/2” pex, and of course faucets and shower heads have their own limitations. But installing said pump with an outlet at the pump for 3/4” garden hose could very well take advantage of said pump’s capacity. You would have to do the math to be sure, but for my purposes the bigger the better, so I’ll probably get a 5 gpm pump.

 

[Buly]

This is what I plan to get when mine fails Remco 55AQUAJET-ARV Aquajet Variable Speed 5.3 GPM RV Water Pump
although last time I looked it was around $125. Love that inflation excuse….

Rich, If you install 5 GPM pump you may experience pulsing (rapid on and off) of the pump. I did read one guy did install the same pump, and it was very annoying for him. The built in variable speed feature did not help in his case?

 

[MemoriesByTheMile]

I have often wondered why RVs don’t use a small pressure tank? The biggest reason I can think of is space issue.
A couple gallon pressure tank would allow for a cheaper and less complicated single speed pump.

 

[Neal]

I believe you can add an accumulator tank.

Accumulator – Remco Industries

remcoindustries.com

https://www.amazon.com/s?k=rv+water+pump+accumulator+tank