High Pressure Horizontal Multistage Centrifugal Pump High Head Water Pump

The D series multi-stage centrifugal pump is a segmented type pump designed for high-pressure applications. Its suction port is located at the water inlet and aligned horizontally, while the discharge port is vertically oriented. This design allows for flexible head adjustments based on specific requirements. The assembly of the pump significantly affects its performance, especially the alignment of the guide vanes, which can impact efficiency and flow if not properly maintained. The main components of the D series multi-stage centrifugal pump include the inlet section, middle section, outlet section, impeller, guide vane baffle, water outlet guide wing, shaft, sealing ring, balance ring, shaft sleeve, tail cover, and bearing housing. These parts are typically made from cast iron to form the working chamber of the pump. The impeller, also made of cast iron, compresses the liquid along the axis of rotation. Due to the unbalanced pressure, axial forces are generated, which are managed by the balance disc. Each impeller undergoes static balancing tests to ensure smooth operation. The shaft is constructed from high-quality carbon steel and is fixed with keys, shaft sleeves, and nuts. One end of the shaft connects directly to the motor via a coupling component. Sealing rings prevent high-pressure leakage and are replaceable as wear parts. The balance ring and balance disc, both made of wear-resistant cast iron, help manage axial forces between the outlet section and tail cover. The shaft sleeve protects the shaft and fixes the impeller in place. The bearings used are single-row radial ball bearings, providing reliable support. Packing seals are employed to prevent air ingress and excessive leakage. The packing is placed in a water-filled chamber, and the tightness must be carefully adjusted. If too tight, it can cause overheating; if too loose, it reduces pump efficiency. The D series pump features an advanced hydraulic model, high efficiency, and a wide range of performance capabilities. It operates smoothly with low noise levels and offers either soft packing or mechanical seal options for reliable sealing. The fully sealed shaft design ensures no contact with the medium, enhancing durability. It is suitable for various industries including municipal water supply and drainage, high-rise building pressurization, irrigation, fire boosting, long-distance water transfer, heating systems, and boiler applications. Technical parameters include a flow rate of 6.3-500 m³/h, lift up to 650 meters, power ranging from 2.2-400 kW, speed between 1450-2950 rpm, and a temperature limit of up to 105°C. The working pressure is 3.0 MPa. Below is a detailed table of specifications for different models:

Model	Capacity (m³/h)	Head (m)	Revolution (r/min)	Power (kW)		Effi. (%)	Npsh (m)
				Shaft Power	Motor Power
50D8×2	18	19	2950	1.5	2.2	62	2.3
50D8×3	18	28.5	2950	2.25	3	62	2.3
50D8×4	18	38	2950	3	4	62	2.3
50D8×5	18	47.5	2950	3.75	5.5	62	2.3
50D8×6	18	57	2950	4.5	5.5	62	2.3
50D8×7	18	66.5	2950	5.25	7.5	62	2.3
50D8×8	18	76	2950	6	7.5	62	2.3
50D8×9	18	85.5	2950	6.75	7.5	62	2.3
50D8×10	18	95	2950	7.5	11	62	2.3
50D8×11	18	104.5	2950	8.25	11	62	2.3
50D8×12	18	114	2950	9	11	62	2.3
80D12×2	32.4	22.7	2950	2.68	3	75	2.8
80D12×3	32.4	34.05	2950	4.02	5.5	75	2.8
80D12×4	32.4	45.4	2950	5.36	7.5	75	2.8
80D12×5	32.4	56.75	2950	6.7	7.5	75	2.8
80D12×6	32.4	68.1	2950	8.04	11	75	2.8
80D12×7	32.4	79.45	2950	9.38	11	75	2.8
80D12×8	32.4	90.8	2950	10.72	15	75	2.8
80D12×9	32.4	102.15	2950	11.06	15	75	2.8
80D12×10	32.4	113.5	2950	13.4	15	75	2.8
80D12×11	32.4	124.85	2950	14.74	18.5	75	2.8
80D12×12	32.4	136.2	2950	16.08	18.5	75	2.8
100D16×2	54	35.2	2950	7.2	11	71.5	3.3
100D16×3	54	52.8	2950	10.8	15	71.5	3.3
100D16×4	54	70.4	2950	14.4	18.5	71.5	3.3
100D16×5	54	88	2950	18	22	71.5	3.3
100D16×6	54	105.6	2950	21.6	30	71.5	3.3
100D16×7	54	123.2	2950	25.2	30	71.5	3.3
100D16×8	54	140.8	2950	28.8	37	71.5	3.3
100D16×9	54	158.4	2950	32.4	37	71.5	3.3
100D16×10	54	176	2950	36	45	71.5	3.3
100D16×11	54	198.6	2950	39.6	55	71.5	3.3
100D16×12	54	211.2	2950	43.2	55	71.5	3.3
125D15×2	108	40	2950	15.6	18.5	76	4
125D15×3	108	60	2950	23.4	30	76	4
125D15×4	108	80	2950	31.2	37	76	4
125D15×5	108	100	2950	39	45	76	4
125D15×6	108	120	2950	46.8	55	76	4
125D15×7	108	140	2950	54.6	75	76	4
125D15×8	108	160	2950	62.4	75	76	4
125D15×9	108	180	2950	70.3	90	76	4
125D15×10	108	200	2950	78	90	76	4

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Foshan Dragon Edge Outdoor Equipment Co., Ltd , https://www.dragon-edge.com