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From Propane 101: (seriously, that's what the website is
called!)<br><br>
OPD valves are also designed to only allow propane into and out of the
bottle if attached to the appropriate hose end connection. The threads on
this type of connection are called ACME threads and are visible on the
OPD valve at the point of connection. The ACME threads are easily
identified by how much larger and farther apart they are as compared to
normal pipe threads. OPD valves will not allow propane out of the bottle
if it is not hooked up to anything. This is why turning (opening) an OPD
handwheel on an unattached bottle does nothing in terms of letting
propane out. Many people think that the bottle is empty but in fact, the
cylinder needs to be hooked up to allow any gas out. Learn more about the
<a href="http://www.propane101.com/valveopennopropane.htm">Valve Open -
No Propane</a> issue that many users have with OPD equipped propane
cylinders. <br><br>
<a href="http://www.propane101.com/opdcylindervalves.htm" eudora="autourl">
http://www.propane101.com/opdcylindervalves.htm</a><br><br>
Now, understanding all of that, I still don't know if your tank is
full. Where did you buy it? If you picked it up off the shelf
inside a store, I'm sure it was empty at that time. Did you bring
it somewhere to be filled? There are some stores that will sell you
a filled tank, but either they fill it right before they give it to you
or they store it somewhere outside the store. <br><br>
I very much doubt that the tank was filled and leaked out all of its
propane. I suspect that either it is full or it was never
filled. The tank will weigh a lot more when full. Typical
grill tanks weight 17lbs empty and 37 lbs full. The empty weight
(Tare Weight) should be stamped on the tank. <br><br>
-Steve <div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br />
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