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New owner need your help

Etowah

Tbone777

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One month as new owner of 40-year-old wash. 7 bays, 20-year-old Mark VII equipment. Quite a learning curve. I have 2 bays next to each other which seem the have the same problem. Low pressure for the wand. Reading about 900psi on gauge. Feels very weak compared to the other bays. I noticed yesterday, while operating in high pressure soap or rinse, that the foam gun was also dispensing at a low flow. This is happening on both bays 1 and 2. Any help as what to look for would be most appreciated.
 

MEP001

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Weep system check valves. Post pictures and someone can point them out.
 

Tbone777

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There is only one check valve that I can find at the pump stand. I assume this is the weep system check? Is this a off the shelf spring check or is it specific to the car wash equipment? Thank you for responding! IMG_2984.JPG
 
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