1.Build-in Ball Valves ,full flow 2.OEM 3. ... prevents teampering With the internals of the valve when in the line. The ball valve have a double seal ... Countries like: America, Russian, Germany, Korea, Bangladesh, Thailand,Myanmar,Kazakhstan,Mozambique,Malaysia, Greece, Sri Lanka,Syria,Tunisia,Mauritius,Algeria ... etc. Build-in Ball Valves full flow/1/2" 3/4" 1"