brass vertical exhaust valves 1.material:brass 2.size:1/2",3/4",1" 3.ISO9001:2000 brass vertical exhaust valvesTechnical requirement:1.Before assembling,all parts will be cleaned, no oil or grease. Remove all burrs and sharp edges.2.Before connecting,body cap male thread should be coated with sealing glue.3.Handle turn or close freely4.After assembling,test by air at pressure no less than 0.8Mpa, ...
