Forthethermalsystemandboilersystem,OEMsupport FixedSBRrubberballoon,carbonsteel Maxworkingtemperature:EPDM:-10°---99° CodeCapacityLtrDiametermmHeightmmMax.press.connectDDH0016L387873BarG3/4"DDH0028L3871043BarG3/4"DDH00310L3871103BarG3/4"DDH00412L3871403BarG3/4"DDH00514L3871503BarG3/4"DDH00618L3872003BarG3/4" expansion tank