Description :heat expansion tank Material :steel iron Type: flat ,rectangle ,round capacity:6L/8L/10L/12L/18L/24L Max pressure :3Bar Min pressure :1Bar Connection size:G1/2 ,G3/4 ,NPT 1/2 " ,NPT 3/4",NPT 3/8 " we could supply different high quality expansion tank ,pressure vessel air storage tank ,air tank ,air cell and some accessories of air tank .If you have interest in our products ,please feel free to contacts us