On Fri, 30 Nov 2007 18:17:59 -0600, Richard J Kinch
wrote:

Elle writes:

Do I just use teflon tape on the threads and then apply a
lot of torque until each PVC male adapter inserts at least
halfway into its metal valve?

Tape, yes. Excessive torque, no.

A fine line between torqued and a cracked PVC. :-)