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Message: <blockquote data-quote="RZ350" data-source="post: 1402069" data-attributes="member: 13475">Had a little time to disassemble the valves from the cartridges.  Heating the joint for about 20 seconds on my heat gun high setting (1000F) did the trick.  I knew it was warm enough when liquid started weeping out of the joint.  Before the heat, I couldn't budge it with high effort (but I'm a bit gun-shy on the project).  Once heated, it broke apart pretty easily with moderate effort.<img src="https://farm1.staticflickr.com/942/43711116421_cdd9df25b4_o.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />I had some natural beeswax on hand to dissolve the Loctite if it proved stubborn, but didn't need it.<img src="https://farm1.staticflickr.com/941/43711116521_df48180781_o.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />This is the valve that survived the over-torque condition.  You can see where the diameter was starting to neck down and distort around the hole (That hole is a classic "stress-riser" in the engineering world... where failures can often originate from)<img src="https://farm1.staticflickr.com/928/43711116211_56cc7e17a5_o.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Here's how badly the copper washer can distort in an over-torque condition.  The originals looked fine and will be reused.<img src="https://farm1.staticflickr.com/936/41902411290_ebb4a38e18_o.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Everything is apart and ready to go back together with new parts.  More to come....</blockquote>

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