I'm going to put in a 2 gallon residential accumulator tank. Went looking for the parts to hook it up. Couldn't find what I was looking for so I asked the Lowes guy. He told me that RVs usually have odd sized water lines and that I probably needed to get the T-fitting from an RV dealer. He said that the lines are most likely smaller than the residential stuff. Have any of you done this? Did you have problems with regular push-to-fit parts off the shelf?The water heater is under the bottom full-sized bunk. 3/4 of the space under there is sealed off, and mostly empty. I plan on putting the tank under there and tie into the cold water line going to the water heater. Thanks.

“I'm going to put in a 2 gallon residential accumulator tank.”Why? Lots of work too. Lowe’s? That’s where I go for RV advice.

Sounds like the Lowes guy is clueless. I added an accumulator under the bathroom sink in my coach, tied into the cold water line for the sink faucet. As I recall I needed to add a T to the accumulator, moved the 1/2 inch line from the faucet to the T, the add a half inch to half inch hose from the other side of the T to the faucet.

I got a small accumulator to go with the pump in our 5er. It was supposed to reduce the water pump action, which is noisy despite the added coils of hose I put in and the added "packing" where water pipes go through walls to reduce vibration.Anyway, it didn't do much good. All it does is delay when the water pump comes on, but eventually you still have to replace that water, so the pump still runs as long, only later after you run the tap.A bigger accumulator tank would delay the pump coming on for a longer time, but IMO would not reduce the pump time once it comes on to replace the water.So unless somebody else can explain it better, the accumulator idea is a total waste of money and effort no matter how big of a tank it is. :(

Evening out the pressure when having a shower is why I'd love to add one.

The initial pressure with no water pump coming on falls away and then the water pump comes on. No even pressure.

Adding an accumulator tank | Good Sam Community

43 Replies

BFL13
Explorer II
Mar 02, 2018
I got a small accumulator to go with the pump in our 5er. It was supposed to reduce the water pump action, which is noisy despite the added coils of hose I put in and the added "packing" where water pipes go through walls to reduce vibration.

Anyway, it didn't do much good. All it does is delay when the water pump comes on, but eventually you still have to replace that water, so the pump still runs as long, only later after you run the tap.

A bigger accumulator tank would delay the pump coming on for a longer time, but IMO would not reduce the pump time once it comes on to replace the water.

So unless somebody else can explain it better, the accumulator idea is a total waste of money and effort no matter how big of a tank it is. :(
Isaac-1
Explorer
Mar 02, 2018
Sounds like the Lowes guy is clueless. I added an accumulator under the bathroom sink in my coach, tied into the cold water line for the sink faucet. As I recall I needed to add a T to the accumulator, moved the 1/2 inch line from the faucet to the T, the add a half inch to half inch hose from the other side of the T to the faucet.
Lwiddis
Explorer II
Mar 01, 2018
“I'm going to put in a 2 gallon residential accumulator tank.”

Why? Lots of work too. Lowe’s? That’s where I go for RV advice.

Forum Discussion

Adding an accumulator tank

43 Replies

About Technical Issues

Related Content

Proper Accumulator Tank Pressure

Accumulator Tank

Accumulator tank pressure

Shurflo Water Accumulator tank

Pre-Pressurized Accumulator Tank