Automatic Balancing Valve, Pipe Size 1 in, Connection FNPT, Flow Range 0.3 to 10.0 gpm, Max. Pressure 400 psi WOG, Max. Fluid Temp. 200 Degrees F, Body Material Brass, Seal Material EPDM, Seat Material PTFE, Standards NSF/ANSI 372, Includes (2) Plugged Accessory Ports