Recharging Water Arrestors


I had two Watts 150a water arrestors installed by my washer a couple years back to prevent water hammer. The water hammer is back and I’m told I can “recharge” the arresters.  There is a bicycle-tire-like valve on the front of each arrestor but I have not been able to find any direction as to how to do so (like How much air do I add? can I do damage if I add too much air?)

Thanks in advance, great site and YouTube channel, I used your videos a lot when drywalling.



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James Haven 4 years 1 Answer 1143 views 0

Answer ( 1 )

  1. I would turn the main water off, open up any water valve to release any pressure in the lines. Then add your air. A few pounds should be fine. Then just turn the water back on.


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