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pressure safety valve blew - question


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really? Just curious, because all my air compressors have safety valves that are spring loaded and screw into the tank., When the pressure in the tank exceeds the spring rating, the spring activates and releases pressure, but snaps back when it is done. Seems silly to me to have any pressure tank that has a valve that only works once.

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really? Just curious, because all my air compressors have safety valves that are spring loaded and screw into the tank., When the pressure in the tank exceeds the spring rating, the spring activates and releases pressure, but snaps back when it is done. Seems silly to me to have any pressure tank that has a valve that only works once.

 

gunny-

the lid of the canner actually has 3 pressure relief points:

DSC00489-1.jpg

 

The stem in the middle is where the weight goes, there is a 'riser' in the back of the pot that stays up as long as there is pressure in the pot (so you can tell when it is safe to take the lid off). The little black plug in the front of the lid is the pressure valve that blew. I tried it again, and it did blow again. Confirms I have to get a new one.

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