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Old 07-18-2011, 08:09 AM   #1
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Water 'hammering'.....

What causes this?

Posted in the pup forum, I had a water pressure loss caused by this problem that resembles a very noisy/erratic water pump- which my pup doesn't have. I replaced what I thought was a faulty water inlet/check valve to no avail. I removed the water line completely and blew compressed air through it, and upon reassembly, still had no pressure (well, very little) and water hammering.

I already took the faucet apart, cleaned it, and reassembled it- and I'm not claiming to be the faucet king, but its a simple piece and nothing appears to be broken or out of place.

I going for a new faucet next because I'm running out of options. There are only 3 parts to this system- the water inlet, a piece of hose, and a faucet.

p.s. This is the type of faucet I have...

http://www.amazon.com/Water-Systems-.../dp/B003VAUO70

Anybody have problems with 'hammering' and what was the fix??
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Old 07-18-2011, 02:48 PM   #2
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Wow, this one`s got me stumped! If you had a pump I may have a few suggestions but...........other then some sort of restriction/clog, Sorry, I`m no help.
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Old 07-18-2011, 08:36 PM   #3
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I'm no plumber, but I would try either lengthening or shortening the supply tubing by 6 inches or a foot. My guess (oh no!) is the tube happens to be just the right length, like a pipe organ, to 'resonate'.
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Old 07-19-2011, 08:24 AM   #4
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Quote:
Originally Posted by David472 View Post
try either lengthening or shortening the supply tubing by 6 inches or a foot.
Would love to try that...trouble is, the plastic line is a specific length for the camper and it has molded/flared ends to fit specific connectors.

Hopefully the faucet is/was the problem...I'll know when it comes in and I can install it.
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Old 07-19-2011, 11:50 PM   #5
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I'm not familiar with this system either but I'm assuming that you attach a outside water line to a connection that is connected to an inside line that this unit is attached to.(whew),

Do you use a pressure reducing device of some sort? I'm wondering if your line pressure is too high. Does it start hammering shortly after turning it on? Can you bench test it with a regulator? I know in houses they run dead end lines above the taps to stop them from hammering but to me this sound like the pressure is a issue here. Just guessing though. Let us know when you figure it out. It may save some one else some grief.
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Old 07-20-2011, 12:19 PM   #6
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It only hammers when you activate the faucet. Water does come out of the faucet, but just a trickle.

Whats wierd- the faucet worked fine when we first brought the camper home and hooked it up, no issues whatsoever- no noise, nothing but good pressure & flow.

It didn't start hammering until after being hooked up for several hours at the campground. Once I hooked it up again at home (thinking hopefully it would be alright again), it didn't change- just noise and a trickle.
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Old 07-20-2011, 03:00 PM   #7
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Could it be sucking air on the suction side of the pump? This can cause a low, irregular flow. Check out the suction line that goes to the pump. Check the strainer, if you have one. Good luck.
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Old 07-20-2011, 05:34 PM   #8
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No pump in my water system. The faucet is a two stage ("Fump" faucet) that allows city water pressure in one port (by pushing down), or sucking water from a container (pushing up/down repeatedly to draw water).
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Old 07-20-2011, 05:50 PM   #9
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Ok, this is just a SWAG, but mayhap you have the city water line hooked up to the hand pump port on the faucet?
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Old 07-20-2011, 08:48 PM   #10
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@ Lady....sorry to confuse...the faucet has only one connection for 'city' water...the other connection is for an interior water container (which we don't have/use). The water lines can't be hooked up wrong...two different types of connectors & tube sizes.

Things are looking up- the new faucet got here today! Woohoo! Details coming soon...
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