Cross Malleable Iron Galvanized ASTM A197 Class Class 150 For Pipe Schedule 40 1/4 in Female NPT 13/16 in 18 1/4 In.-18 1/4 in Female NPT 13/16 in 18 1/4 In.-18 1/4 in Female NPT 13/16 in 18 1/4 In.-18 1/4 in Female NPT 13/16 in 18 1/4 In.-18 300 psi Maximum Operating Pressure