1.LZM-ZT flowmeter liquid 2.flowmeter liquid,acrylic 3.flowmeter,with valve 4.flow meter 5.design&utility ... patent certificate LZM-ZT flowmeter liquidmaterial1.flowmeter liquid,which ... optionalFeatures1.easy mounting ,low weight,long life span2.machined acrylic meter body,highly polished to a clear finish,good pellucidity ...