ANSUL Foam Hardware ( Proportioner, 4 in., Flanged, 3% AFFF (AFC-3A, AFC-3B) ) Part Number : 74890 Material : Proportioner, 4 in., Flanged, 3% AFFF (AFC-3A, AFC-3B) Thread Size/Type: ………….. Weight (lbs): 50 Part Description: …………..