Pneumatic tyre union is replaceable,lip-type seal provides primary seal,protects secondary metal-tometal seal and so on. Nominal pipe size:2,3;Pressure Rating :20000 psi coled working pressure;Connections Type: butt-weld;Componet Parts:Detachable Nut,Male Sub,Female Sub,Seal Ring,Retainer Segment,Retainer Ring;Sour Service Models to NACE MR-01-75.Recommended serviceCementing,fracturing ,acidizing ...