GDL型立式多級管道泵[1]是根據ISG單泵頭型管道離心泵及DL型立式多級離心泵[2]的優點而設計的結晶，在結gdl型立式多級管道泵構上采用了立式，分段式，泵的吸入與吐出口設計在下方成一字型，并采用水力平衡的方法解決，殘余軸向力由一個球軸承承受，因而運轉平衡，噪音低，占地面積小，檢修方便，以減少單泵機組配帶功率，簡化電控設備。適用于高低層建筑的住宅、醫院、旅館、百貨大樓、辦公大樓等的消防，生活供水及鍋爐機組循環、冷卻水循環輸送等。
型 號級 數流 量(m3/h)流 量(L/S)揚 程轉 速軸功率(kw)電機功率(kw)效 率吸 程汽蝕余量(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立式低轉速多級離心泵采用國內節能的水力模型，具有效率高，性能曲線平緩，運行范圍廣，符合消防局的有關規定，滿足不同用戶的使用需要；DL立式多級泵采用立式分段式結構，且運轉平穩、噪音低、使用壽命長、占地面積少、安裝維護方便等優點。
DL立式低轉速多級離心泵主要用于高層建筑生活給水、消防恒壓供水、自動噴淋水、自動水幕供水等，也可應用于廠礦給排水、遠距離送水，各種設備配套使用以及各種生產工藝用水等。DL型立式多級泵介質使用溫度不超過80℃，DLR型介質使用溫度不超過120℃。