FPPI Check Valves are manufactured of solid brass for use on sprinkler and standpipe systems. Each check valve is tapped (plugged) with a 1/4" or 1/2" IPS port for installation of a system accessory such as a ball drip, sprinkler gauge or other approved device. (1/2" NPT on 4" diameter valve.)
* Contains lead. Not for use in water systems intended for human consumption.
1 1/2" size is UL/ULc Listed only.