ANSUL Foam Hardware ( Line Proportioner, Brass, PL-280 (280 gpm), 3% Conc. Orifice ) Part Number : 75694 Material : Line Proportioner, Brass, PL-280 (280 gpm), 3% Conc. Orifice Thread Size/Type: ………….. Weight (lbs): 20 Part Description: …………..