Can they not build the PhaSeal costs into your supplies cost? Especially since 797 requirements are shooting supply budgets through the roof... just tack that on. We've been using PhaSeal since before I got here so I'm not sure how they adjusted, but usually when you mention "safety" and "JCAHO" they tend to be willing to accept the financial increase (at least in my facility.....).
For the buyers using or going to use Phaseal, look into the Tevadaptor from B Braun. Their technology is quite impressive. I just saw it last week. Have to do a cost-benefit analysis on this. If anyone beats me to it please share the information.