Rated voltage:AC220V±15% AC110V±15% others upon request Rated frequency:50/60Hz Proper fluid: public water of 1-60 centigrade, work discontinuously (AB 3min/5min) with water temperature 90centigrade Work water pressure:0.02-1.0MPa Range of water pressure:2.0MPa \10min normal Water flow: (1)4±15%; (2)6±15%; (3)8±15%; (4)10±15%; Structure character:the core is free from blocking with water scales in the khon, which greatly decrease or prevent the direct flowing of water caused by water scales; the water flow is heavy. In addition: Designs will adhere to customers' special demands.