该泵是在循环水多用真空泵的基础上，根据实验室面积较小这一特点，参照日本台式泵，一次性成型外壳，缩小体积改进而成，具有体积小，重量轻，外型美观等特点，双表、双头抽气,四表四抽头，双面相同的多用真空泵，即便于教师直观演示，学生亦可在任意一面开机、关机。(1)本机采用双抽头，可单独或并联使用装有两个真空表。(2)新改进防腐四抽头，可单独或并联使用装有四个真空表。(3)主机采用不锈钢机芯和防腐材质机芯两种型号制造。(4)耐腐蚀、无污染、噪音低、移动方便，还可根据用户需要加装真空调节阀。（5）可同时有四名学生进行化学实验，缩小实验空间。The pump is made on the basis of circulating water multi purpose vacuum pump, and in view of the small space of the lab, and with reference to the Japan -made bench-type pump, made with reduced size and improvement, and adopting one-shot forming, it has the feature of small size, light weight and beautiful appearance and so on, it has double-size-double- tap air extracting, 4-size-4-tap , identical dual size multi purpose vacuum pump. While the teacher is demonstrating, students can also turning on or off the machine on any size of it.1. It adopts dual taps, can be used independently or in parallel combination, with 2 vacuum meters.2. Newly improved anticorrosion four taps can be used independently or in parallel combination, with 4 vacuum meters.3. The host machine has two models; one is made with stainless steel module and the other with anticorrosion materials.4. It is corrosion resistant, pollution free and with low noise, and easy to move, also, vacuum-adjusting valve can be added according to the needs of customers.5. Four students can conduct chemical experiments simultaneously, reducing experiment space.       ④SHZ－DⅢ型透明水箱台式不锈钢循环水真空泵   ⑤SHZ－ⅢA型不锈钢台式循环水真空泵    该泵是在循环水多用真空泵的基础上，根据实验室面积较小这一特点，改进透明防腐水箱，防腐壳和不锈钢外壳多种型号，缩小体积改进而成，具有体积小，重量轻，外型美观等特点，双表、双头抽气,并设有加冰孔。(1)本机采用双抽头，可单独或并联使用装有两个真空表。(2)主机采用不锈钢机芯和防腐材质机芯两种型号制造。(3)耐腐蚀、无污染、噪音低、移动方便，还可根据用户需要加装真空调节阀。技术参数：规格型号配机性能(Performance)本机功能外表尺寸长×宽×高(mm)全机重量Kg功率工作电源流量扬程机体材质最大真空度单头抽气量抽气头数储水箱容积WV/HZL/minM MpaL/min个LSHZ-E180～220/506012防腐0.09810215422×306×48015SHZ-D(Ⅲ)180～220/506081Cr180.09810215400×280×42015SHZ-D(Ⅲ)四表四抽头370～220/50608防腐0.09810415400×280×42015SHZ-ⅢA180～220/506081Cr180.09810215400×280×42015SHZ-D(Ⅲ)透明水箱180～220/506081Cr180.09810215400×280×42015