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Compressor small line with schrader valve Q

700 views 4 replies 5 participants last post by  4x4mike 
#1 ·
When transporting my new to me compressor (nice 80 gal 30cfm sandborn 2 stage) the small flexible line was damaged and took out the schrader type vavle leading into the pressure switch. I ordered a new line and switch-I was just wondering the exact purpose? It seems that a check valve controls the pressure to only when the pump is running? Is it a blow off type safety valve so there is no residual pressure in the main lines to the pump?
 
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