1, High quality brass safety valve with/without nickel plating. 2, 100% leakage test 3 ... 3/4’’ BSPDrain lever AvailableRemarks:1, Our water heater safety valves are available in brass valve body and valve core, which has ... :(1) Which kind of valve core is the preference? Brass/Plastic(3) Drain lever/Handle is available, but won ... quality than normal market products Electric water heater safety valve