Can some one tell me the difference between a blow off valve and a recirculation valve?
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Asked by Bradley Jul 29, 2013 at 06:27 PM

Question type: Car Customization

A coworker is saying that a blowoff and recirculation valve are the same thing. We have already been online looking it up can someone tell me the difference between the two parts.

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Fordtudor37 answered 10 years ago

A blow off valve "blows off excess pressure once built up inside a confined space, venting to the atmosphere". A recirculating valve "recirculates the system vapor or liquid once it has reached a certain pressure so that it is not allowed to vent into the atmosphere".

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Bradley answered 10 years ago

anybody got pix we've basically told him as much as you have just said fordtudor37.

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Fordtudor37 answered 10 years ago

The thermostat in your car's engine is a "recirculating valve" and the safety air check on an air compressor in your garage or the top on a pressure cooker is a "blow off valve".

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