JS-A1405 Brass ball valve, steel handle. Size: 1/2'' to 4'' .  
Technical Requirement:
Before assembling, all parts should be clean, no oil or grease, remove all burrs and sharp edges. Before connecting, body cap male thread should be coated with sealing glue.  Handle turn or close freely.  After assembling, test by water at pressure no less than 0.8MPA, no leakage.