Feture: 1, Time set: 0~30 mins mechanical timer 2, Temperature set: 20~80℃mechanical heater" 3, Material: good quality stainless steel 4, Feture: purge tank moulded by punch, without any gap 5, Drainage system: styles with 6L above was installed drainage ball valve. 6, Heat dissipation: styles with 10L above was installed heat dissipation fan.