... ,heating,etc. 4.Opening/closing tests:10000 time Features: Ball valve are bottom loaded stem designed, this anti-blow-out ... Handle Steel & Aluminium 9 Nut Steel Structure Chart&Data: Other Valves seriesSample Showroom The 111st Canton fairMain Market 1.Europe 2 ... Malaysia, Greece, Sri Lanka,Syria,Tunisia,Mauritius,Algeria etc. brass ball valve/Lockable Ball Valves full flow/flat lever Handle/1/4"-4"