Colonial Laboratory Valves offer the following:

hand mold able epoxy with a 1-1 ratio

Purple-tinted aggressive primer for use on PVC and CPVC pipe and fittings

compact design for minimal space requirements

Connections (Flange x Nut): Thread x Thread

Clear PVC Check Valves Gray Colonial Laboratory Valves offer theUnion check valves allow one directional water flow and are used to prevent back siphoning. They are commonly used on return pump outputs to prevent water overflowing the sump in the event of a power outage, pump failure or maintenance. These check valves feature true union fittings on each end for easy Cleaning or replacement. Designed to fit Schedule 40 pipe and fittings of the same size.