heater valve for Asia,Central&South America with ISO9001-2008 Certificate 1)with meter 2)male thread connector 3)q=1.2m3/hr heater ... -2008 Certificate and do according to CJ50-20081)big flow capacity, 2kg/hr, with gauge meter2)can be used in home, hotel ... , restaurant, heater...etc3)using gas: propane, butane, lpg4)working temperature:-20C ...