... 6L, 8L, 10L, 12L, 16L, 20L with a variety of capacities offer Rated input: 10KW, 12KW, ... ; Unexpected flameout protection device Low start water pressure; Water pressure stabilizing design; 20 minutes cut-off ... Water over high pressure protection device; Over freezing protection device; Super low water pressure starting design Gas Water Heater, Instant Tankless Water Heater, Natural Gas Water Heater ...