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Posted by Don Ocean on March 19, 2009, 10:13 pm
Gary wrote:
>> Gary wrote:
>>> I installed 4 grohe thermostatic valves today with volume control valves.
>>> 3 showers and one tub. I ran water to them and found that two of them
>>> would hammer when turning off the volume valve. Because I used pex I can
>>> see that there is air in the lines. I have let them run for about 20
>>> minutes but the air doesn't want to come out. I can't see it when the
>>> water is flowing, but when I turn the water off I get the hammer noise
>>> and then the air appears and it looks like it comes out of the valve into
>>> the pex.
>>> Will this air come out of the water line with use? Or is there something
>>> I should do? I would like to make sure that my pipes wont be hammering
>>> once I have my drywall installed.
>>> Thx
>> They make PEX in clear Material that you can see through? I have not seen
>> that before. As for the water hammer , just install air containing
>> Hammer chambers above each faucet, valve or whatever. The compression of
>> the air in those chambers will remove the hammer. Or you can purchase
>> units that do the same thing only with a bladder etc. The PEX we use for
>> hydronic heat must be a bit different in material then yours. Ours comes
>> in Red or blue colors and is rated for potable water.
>
> The Colored Pex here is heatpex (red) and you can use it for potable water
> but it is twice as expensive as the regular stuff. Our domestic water pex
> comes in white and clear.
>
> I just tested my pressure and it is at 85psi. Could that be causing the
> hammering?
Pressure popoff valves are set at 50 to 65 lbs. You can still install
air compression chambers that should aleviate that.
>
>
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Posted by The King on March 20, 2009, 4:50 am
wrote:
>Gary wrote:
>>> Gary wrote:
>>>> I installed 4 grohe thermostatic valves today with volume control valves.
>>>> 3 showers and one tub. I ran water to them and found that two of them
>>>> would hammer when turning off the volume valve. Because I used pex I can
>>>> see that there is air in the lines. I have let them run for about 20
>>>> minutes but the air doesn't want to come out. I can't see it when the
>>>> water is flowing, but when I turn the water off I get the hammer noise
>>>> and then the air appears and it looks like it comes out of the valve into
>>>> the pex.
>>>> Will this air come out of the water line with use? Or is there something
>>>> I should do? I would like to make sure that my pipes wont be hammering
>>>> once I have my drywall installed.
>>>> Thx
>>> They make PEX in clear Material that you can see through? I have not seen
>>> that before. As for the water hammer , just install air containing
>>> Hammer chambers above each faucet, valve or whatever. The compression of
>>> the air in those chambers will remove the hammer. Or you can purchase
>>> units that do the same thing only with a bladder etc. The PEX we use for
>>> hydronic heat must be a bit different in material then yours. Ours comes
>>> in Red or blue colors and is rated for potable water.
>>
>> The Colored Pex here is heatpex (red) and you can use it for potable water
>> but it is twice as expensive as the regular stuff. Our domestic water pex
>> comes in white and clear.
>>
>> I just tested my pressure and it is at 85psi. Could that be causing the
>> hammering?
>Pressure popoff valves are set at 50 to 65 lbs. You can still install
>air compression chambers that should aleviate that.
>>
>>
I hope you're not suggesting that water heater T&P valves have a 50 to
65 lb set.
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Posted by Don Ocean on March 20, 2009, 4:41 pm
The King wrote:
> wrote:
>
>> Gary wrote:
>>>> Gary wrote:
>>>>> I installed 4 grohe thermostatic valves today with volume control valves.
>>>>> 3 showers and one tub. I ran water to them and found that two of them
>>>>> would hammer when turning off the volume valve. Because I used pex I can
>>>>> see that there is air in the lines. I have let them run for about 20
>>>>> minutes but the air doesn't want to come out. I can't see it when the
>>>>> water is flowing, but when I turn the water off I get the hammer noise
>>>>> and then the air appears and it looks like it comes out of the valve into
>>>>> the pex.
>>>>> Will this air come out of the water line with use? Or is there something
>>>>> I should do? I would like to make sure that my pipes wont be hammering
>>>>> once I have my drywall installed.
>>>>> Thx
>>>> They make PEX in clear Material that you can see through? I have not seen
>>>> that before. As for the water hammer , just install air containing
>>>> Hammer chambers above each faucet, valve or whatever. The compression of
>>>> the air in those chambers will remove the hammer. Or you can purchase
>>>> units that do the same thing only with a bladder etc. The PEX we use for
>>>> hydronic heat must be a bit different in material then yours. Ours comes
>>>> in Red or blue colors and is rated for potable water.
>>> The Colored Pex here is heatpex (red) and you can use it for potable water
>>> but it is twice as expensive as the regular stuff. Our domestic water pex
>>> comes in white and clear.
>>> I just tested my pressure and it is at 85psi. Could that be causing the
>>> hammering?
>> Pressure popoff valves are set at 50 to 65 lbs. You can still install
>> air compression chambers that should alleviate that.
> I hope you're not suggesting that water heater T&P valves have a 50 to
> 65 lb set.
Home boiler valves are set at 30, mikey... Please don't cry. Most new
water heaters have an expansion tank and a erwliwf valve, mikey as does
the boiler. You are making Stormy look brilliant by your antics. ;-)
I suppose you are also an expert in nuclear physics too. You Union guys
are hilarious.
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Posted by kool on March 20, 2009, 8:14 pm
>>>>> Gary wrote:
>>>>>> I installed 4 grohe thermostatic valves today with volume control
>>>>>> valves. 3 showers and one tub. I ran water to them and found that two
>>>>>> of them would hammer when turning off the volume valve. Because I
>>>>>> used pex I can see that there is air in the lines. >>>> I just tested
>>>>>> my pressure and it is at 85psi. Could that be causing the
>>>> hammering?
>>> Pressure popoff valves are set at 50 to 65 lbs. You can still install
>>> air compression chambers that should alleviate that.
>> I hope you're not suggesting that water heater T&P valves have a 50 to
>> 65 lb set.
> Home boiler valves are set at 30, mikey... Please don't cry. Most new
> water heaters have an expansion tank and a erwliwf valve, mikey as does
> the boiler. You are making Stormy look brilliant by your antics. ;-)
> I suppose you are also an expert in nuclear physics too. You Union guys
> are hilarious.
I think the OP is talking about a domestic hot water heater, not a heating
boiler, hense the shower and tub referal.
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Posted by The King on March 20, 2009, 11:11 pm
On Fri, 20 Mar 2009 17:14:26 -0700, "kool"
>>>>>> Gary wrote:
>>>>>>> I installed 4 grohe thermostatic valves today with volume control
>>>>>>> valves. 3 showers and one tub. I ran water to them and found that two
>>>>>>> of them would hammer when turning off the volume valve. Because I
>>>>>>> used pex I can see that there is air in the lines. >>>> I just tested
>>>>>>> my pressure and it is at 85psi. Could that be causing the
>>>>> hammering?
>>>> Pressure popoff valves are set at 50 to 65 lbs. You can still install
>>>> air compression chambers that should alleviate that.
>>> I hope you're not suggesting that water heater T&P valves have a 50 to
>>> 65 lb set.
>> Home boiler valves are set at 30, mikey... Please don't cry. Most new
>> water heaters have an expansion tank and a erwliwf valve, mikey as does
>> the boiler. You are making Stormy look brilliant by your antics. ;-)
>> I suppose you are also an expert in nuclear physics too. You Union guys
>> are hilarious.
>I think the OP is talking about a domestic hot water heater, not a heating
>boiler, hense the shower and tub referal.
Don't try and confuse him.
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