1.Build-in Ball Valves ,full flow 2.OEM 3.suitable for water services,heating,etc. 4.Opening/ ... a double seal with elastic O-RINGS chosen for their high resistance to ageing. Perfect seal at ... low and high pressureand wear resistant, solid and reliable for life-time use. Application: Material: NO. Component ... , Greece, Sri Lanka,Syria,Tunisia,Mauritius,Algeria etc. Build-in Ball Valves full flow/1/2" 3/4" ...