... services,heating,etc. 4.Opening/closing tests:10000 time Features: Ball valve are bottom loaded stem designed, this anti-blow-out stem ... life-time use. Application: Material: NO. Component Material 1 Body C37700 2 Bonnet C37700 3 Ball C37700 4 Seat Ring Teflon 5 ... ,Malaysia, Greece, Sri Lanka,Syria,Tunisia,Mauritius,Algeria etc. brass ball valve/Lockable Ball Valves full flow/flat lever Handle/1/4"-4"