This standard replaces ZB J71 016-89 and ZB J71 007-88. This standard specifies the type, basic parameters, technical requirements, test methods and inspection rules of vortex pumps. This standard is applicable to vortex pumps that transport liquids that do not contain solid particles and have a viscosity of no more than 37.4mm2/s. The temperature of the transported liquid: single-stage, two-stage vortex pumps and multi-stage self-priming vortex pumps is -20~80℃. The highest temperature for centrifugal vortex pumps is 105℃. JB/T 7743-1995 Vortex Pump JB/T7743-1995 Standard download decompression password: www.bzxz.net