GDL型立式多级管道泵[1]是根据ISG单泵头型管道离心泵及DL型立式多级离心泵[2]的优点而设计的结晶，在结gdl型立式多级管道泵构上采用了立式，分段式，泵的吸入与吐出口设计在下方成一字型，并采用水力平衡的方法解决，残余轴向力由一个球轴承承受，因而运转平衡，噪音低，占地面积小，检修方便，以减少单泵机组配带功率，简化电控设备。适用于高低层建筑的住宅、医院、旅馆、百货大楼、办公大楼等的消防，生活供水及锅炉机组循环、冷却水循环输送等。
型 号级 数流 量(m3/h)流 量(L/S)扬 程转 速轴功率(kw)电机功率(kw)效 率吸 程汽蚀余量(m)(r/min)(%)(m)(m)40DL26.21.7223.614500.921.54073.1936.21.7235.41.382.24073.1946.21.7247.21.8434073.1956.21.72592.344073.1966.21.7270.82.7544073.1976.21.7282.63.225.54073.1986.21.7294.43.685.54073.1996.21.72106.24.147.54073.19106.21.721184.67.54073.19116.21.72129.85.067.54073.19126.21.72141.65.52114073.1950DL212.63.524.414501.553547.62.66312.63.536.62.333547.62.66412.63.548.83.14547.62.66512.63.5613.885.5547.62.66612.63.573.24.655.5547.62.66712.63.585.45.437.5547.62.66812.63.597.66.27.5547.62.66912.63.5109.86.9811547.62.661012.63.51227.7511547.62.6665DL2308.333214504.225.5627.62.823308.33486.337.5627.62.824308.33648.4411627.62.825308.338010.5515627.62.826308.339612.6615627.62.827308.3311214.7718.5627.62.828308.3312816.8822627.62.829308.3314418.9922627.62.8210308.3316021.130627.62.8280DL250.4144014507.8411707.822.49350.4146011.7615707.82.49450.4148015.6822707.82.49550.41410019.630707.82.49650.41412023.5230707.82.49750.41414027.4437707.82.49850.41416031.3645707.82.49950.41418035.2845707.82.491050.41420039.255707.82.49100DL-722722040145010.9157282.8372206010.918.57282.8472208010.9307282.85722010010.9377282.86722012010.9377282.87722014010.9457282.88722016010.9557282.89722018010.9557282.810722020054.4707282.8100DL-100210027.840145015.1418.5727.23.53310027.86022.7230727.23.53410027.88030.2837727.23.53510027.810037.8645727.23.53610027.812045.3955727.23.53710027.81405375727.23.53810027.816060.5775727.23.53910027.818068.1490727.23.531010027.820075.7190727.23.53150DL-150215027.840145020.4230805.72.8315027.86030.6337805.72.8415027.88040.8445805.72.8515027.810051.0555805.72.8615027.812061.2675805.72.8715027.814074.4775805.72.8815027.816081.6890805.72.8200DL-280228041.660145055.79908463.7328041.69083.691108463.7428041.6120111.571328463.7528041.6150139.471608463.7628041.6180163.382008463.7
DL立式低转速多级离心泵采用国内节能的水力模型，具有效率高，性能曲线平缓，运行范围广，符合消防局的有关规定，满足不同用户的使用需要；DL立式多级泵采用立式分段式结构，且运转平稳、噪音低、使用寿命长、占地面积少、安装维护方便等优点。
DL立式低转速多级离心泵主要用于高层建筑生活给水、消防恒压供水、自动喷淋水、自动水幕供水等，也可应用于厂矿给排水、远距离送水，各种设备配套使用以及各种生产工艺用水等。DL型立式多级泵介质使用温度不超过80℃，DLR型介质使用温度不超过120℃。
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