An installer uses an unpressurized thermal storage tank for drainback protection of a solar thermal system, and carefully slopes all the collectors and collector array piping for 1/4 in. per ft. drop.
NASP’s Certa-Lok C905/RJ PVC pipe is a nonmetallic, mechanically restrained joint pipe system designed for use in potable and reclaimed water, fire protection and force main sewer systems.