Pump Silencing & Accumulator
So I got all my stuff together to quiet the pump down and smooth out the flow. The little ShurFlo accumulator tank is pumped with 40 psig of air. It is hooked up to the pump with 1/2"X36" flexible h...
Forum Discussion
Vintage465 wrote:Vintage465 wrote:mbopp wrote:
Nice job! That pump should be real quiet. I had the room so I installed a 2-gallon residential expansion tank.
I have actually thought about using the larger accumulation tank, but in reality for our use I think the larger tank would be overkill. However, if we actually started using our shower for something other than storage and a coat rack...........this could be logical.
Furthering that thought...........A two gallon tank would add two gallons of fresh water capacity...............
It adds to the total capacity, yes, but not as much to the (easily) usable capacity. I don't know offhand if accumulator tanks are usually specified based on their total volume or on the nominal water volume--I would suspect the former, in which case some portion of the whole must be reserved for the air to pressurize the tank. The usable increase in water capacity would be the difference between the "full" water capacity and the "empty" water capacity at whatever pressure you deem to be the lowest practical pressure for the water system.
It's somewhat akin to how a six gallon water heater tank increases the fresh water storage capacity of an RV by six gallons, but it doesn't really mean you have six more gallons of water you can use before refilling (unless you pull the water heater drain plug to collect water for the last several toilet flushes).
