B & K Malleable Black Iron Coupling For Gas, Oil, Air Rated To 300 Psi @ 150 Deg. F; Steam: 150 Psi Class 150 Standard Ansi Standard B16.3; Unions: 16.39 Astm A-197 Bulk With Upc Label 3/8 Fip Price is indicated for bulk discounted quantity of 5 unit(s) per case.