First, an overview of LG, DL series pump vertical single-suction multistage centrifugal pump. The pump is installed vertically, the motor shaft and the pump shaft are connected by a flexible block coupling, which has the advantages of compact structure, low noise and small occupied area. For the transport of water or physical and chemical properties similar to the water liquid, mainly used in high-rise building water supply can also be used in water supply and drainage enterprises and mines, and low-pressure boiler cycle water. LG, DL medium temperature is less than 80 ℃, LGR, DLR medium temperature is less than 130 ℃ LG (R), DL (R) building feed pump Second, the model significance 65DL (LG) (R) 30-16 × 5 65 --- pump Import diameter 65mm DL --- Building Feed Pump 1450r / min LG --- Building Feed Pump 2900r / min R ---- Hot water type 30 --- Flow rate 30m3 / h 16 --- Single-stage lift 16m 5-- - Series Three, the performance range of flow: 1 ~ 200m3 / h Head: 16 ~ 260m Fourth, product characteristics LG, DL-type pump compared with the horizontal multistage pump, vertical multistage pump rotor with a smaller deflection, Therefore, smooth operation, small vibration, low noise, long service life, at the same time with a compact, small footprint, easy installation features.