simple structure, easy to install and maintainance, high accuracy It is a kind of volumetric flow measuring instrument, which is mainly used in oil, chemical, medical industries.Technical parameters(i). Model number and nominal diameter Model numberLNV48LNV50LNV52LNV53LNV55LNV56Norminal diameter DN20DN20DN25 DN40 DN40 DN50(ii). General regulation ItemSpecsApplicationOil usedPrecision+/-0.5% ...