How I STOPPED a pulsating water flow...

[egarant]

Well let me first tell you what I had done over the past year to try and stop a pulsating water flow to the kitchen sink and bathroom sink. This pulsating also make the pipe rattle a bit making the whole water pump use a bit noisy.

I installed the Shurflo hose kit on both ends of my water pump.

I replaced a major 90 degree fitting that was 1 ft from the output of the water pump with a straight fitting.

I replaced my Shurflo 4008 water pump.

I had purged all the lines of any air.

What FINALLY dawned on me is that MAYBE the water restrictors in the faucet fixtures were too much for the water pump....

I had replaced the stock sink aerator with one that pulled down to get a different spray. I had noticed almost immediately that there wasn't enough pressure to allow the second spray pattern to stay, it always fell back to the default stream.

My little brain started to think.....I took off both of the faucet aerators and ran the fixtures.....no more pulsating!

I went to Home Depot and changed out the existing 1.5 gpm aerators for the max 2.2 gpm models. They work PERFECT!

I swear to god I did a little jig on the kitchen floor, who would of thought that the back pressure caused by the water restrictors, just like the elbows in the plumbing, would have such an effect.

I HIGHLY recommend trying this out, it worked for me!

Mr. E

[Chris_Bryant]

06Fargo wrote:

Dutch_12078 wrote:

egarant wrote:
In regards to installing an accumulator tank, I called Shurflo and a tech told me that the pump model 4008 did not require an accumulator tank and that it would be a waste of money.

The tech was wrong... If your 4008 was pulsating, an accumulator tank would stop it. The Revolution (4008) bypass pump is supposed to eliminate cycling/surging, but it doesn't always work as well as they claim, especially at low flow rates.

Roger this ^

x3- there is an adjustment for the bypass pressure- it is not always well adjusted. Proper adjustment, or simply adding an acumulator would be a fix. The tech really dropped the ball on this- that pump should not pulsate.

[noteven]

Dutch_12078 wrote:

egarant wrote:
In regards to installing an accumulator tank, I called Shurflo and a tech told me that the pump model 4008 did not require an accumulator tank and that it would be a waste of money.

The tech was wrong... If your 4008 was pulsating, an accumulator tank would stop it. The Revolution (4008) bypass pump is supposed to eliminate cycling/surging, but it doesn't always work as well as they claim, especially at low flow rates.

Roger this ^

[Old-Biscuit]

Pulsating water.........

Line pressure drops (open faucet) pressure switch closes/pump starts
Line pressure increases (demand not high enough) pressure switch opens/pump stops

Repeat over and over and over.....

Methods to resolve:
Install accumulator tank ---- even a small one
Remove resisters on faucets/shower
Slightly increase pressure switch 'set point' ---adjustment on end of pump head

[Dutch_12078]

egarant wrote:
In regards to installing an accumulator tank, I called Shurflo and a tech told me that the pump model 4008 did not require an accumulator tank and that it would be a waste of money.

The tech was wrong... If your 4008 was pulsating, an accumulator tank would stop it. The Revolution (4008) bypass pump is supposed to eliminate cycling/surging, but it doesn't always work as well as they claim, especially at low flow rates.

[csamayfield55x]

One of the first things I did when we got out new 5er home was to take every last one of those restrictors out! You are going to use the same amount of water anyway you just get it quicker and cleaner!

Chris

[egarant]

In regards to installing an accumulator tank, I called Shurflo and a tech told me that the pump model 4008 did not require an accumulator tank and that it would be a waste of money.

[TXiceman]

Dutch_12078 wrote:
Installing an accumulator tank would have cured the pulsing issue along with extending the life of the pump due to less cycling.

X2

Kne

[holstein13]

That's a great idea and I'm glad you posted your results to this board. I'll keep it in mind.

[Dutch_12078]

Installing an accumulator tank would have cured the pulsing issue along with extending the life of the pump due to less cycling.

[GMandJM]

Cool that you figured that out and knew how to fix it.