1,For American Market M Type Plug 2, NPT1/4F S22 3,Steel Zinc-Plated(blue) 1.For American Market Milton Type Plug2.Simple operation and good sealing property 3.Nominal pressure: 10KGF/CM4.Medium Temperature: -20---805.Material: Brass (Chromeplate nickel plating)6.The female coupler can be made as internal, external thread , pagoda cover or pagoda according to the customer requirement