Quote Originally Posted by Buckeye View Post
Any pressure gauges on this ?
Maybe it has a leak and leaked out all of its gas ?
+1 what he said!

You could ask your friend for a piercing service valve (like this) https://www.grainger.com/product/SUP...ng-Valve-6X898 and check the pressure at the service port with a standard manifold set, but it sounds like the unit is going to need a service anyway as the sustained load and high pressure may have cracked something.