Coincidently, we just started putting just a "dot" of anaerobic dope on the teflon on a few plastic jobs because we were getting some drips on the concealed heads (p.o.s. socket they give you, better with an impact socket) and it's working fine but I've always been cautious about using dope around heads, especially anaerobics. They can seal a head as well as a thread. I don't use any of the traditional dopes anymore, haven't for years. I was hooked on permabond but at $50 a 2/3 filled quart (some metric equivalent), it was ex$pensive. I love superdope, better consistency and doesn't dry out on the brush as fast. There are some medium and high density tapes out there and colored that work pretty well, less wraps and a more durable seal but I haven't tried them on heads yet. I will say on dissimilar metals, especially steel into brass or bronze; dope over tape every time. Always have and always will. It's a little cleaner on an exposed piece, like a FDV to dope and tape over the dope. Other than that, we just use a dab of anaerobic dope while the pipes turning and make on the fitting.
Tom Duross Go Red Sox On plastic jobs, I instruct my fitters to just use teflon tape on the sprinkler heads. On steel pipe jobs, we tape and dope everything. I worked on power plants for years, and we used anerobic pipe dope without teflon tape quite successfully. Forest Wilson Cherokee Fire Protection _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
