brass body,brass bonnet ,brass ball,PTFE seal,brass stem,steel handly&nut.
1.Before assembling,all parts should be clean,no oil or grease.Remove all burrs and sharp edges.
2.Before connecting,body cap male thread should be coated whth sealing glue.
3.Handle turn or close freely.
4.After assembling,test by water at pressure no less then0.8MPA,no leakage.