LWP/LW Series Stainless Steel Vertical Sewage Pump

Model NO. LWP/LW Series Stainless Steel Vertical Sewage Pump

Pump material: Cast Iron, Stainless Steel

Outlet Size: DN25 - DN500

Flow Range: 7 - 2650 m³/h

Head Range: 7 - 35 m

Motor Power: 0.55 - 315 kW

Speed: 740-2900 r/min

Voltage: 220V / 380V / 415V / 440V / 460V

What is LWP/LW Series Stainless Steel Vertical Sewage Pump？

The LWP/LW series vertical sewage pump is a non-clogging vertical centrifugal pump engineered for efficient wastewater handling and liquid transfer. Built as a corrosion-resistant stainless steel centrifugal pump, this series is based on advanced hydraulic models to deliver high energy efficiency and reliable operational performance. Functioning as a heavy-duty stainless steel pump, it is widely used for industrial effluent discharge and serves as a dependable pump for septic tank and municipal drainage setups.

Features

High-Capacity Impeller: Equipped with a non-clogging impeller design, this stainless steel centrifugal pump easily handles solids and long fibrous materials in liquid media without clogging.
Durable Mechanical Seal: Features a wear-resistant shaft seal mechanism that ensures the stainless steel pump operates reliably for extended service lifespans.
Vertical Compact Design: The space-saving vertical layout allows this pump for septic tank and wastewater processing pump to fit easily into narrow motor rooms or tight installation sites.
Full-Head Safe Operation: Engineered to run smoothly across its complete performance curve without overloading the stainless steel centrifugal pumpmotor.
Flexible Installation: Supports direct pipeline connection or vertical floor installation to adapt to different stainless steel pump layout requirements.

Applications

Industrial & Commercial Wastewater: Discharge of heavily polluted industrial and commercial wastewater.
Sewage Treatment Plants: Drainage systems for municipal sewage treatment plants.
Residential Areas: Sewage discharge and drainage stations in residential communities.
Civil Air Defense Systems: Drainage stations for underground defense facilities.
Hospitals & Hotels: Sewage discharge for hospitals, hotels, and commercial buildings.
Municipal & Construction: Drainage for municipal engineering and construction sites.
Mining & Exploration: Supporting auxiliary equipment for mining and exploration projects.
Agriculture & Biogas: Rural biogas digesters and farmland irrigation.
Water Plants: Water supply systems for tap water plants.

Operating Conditions

The medium temperature does not exceed 60°C, and the medium density is 1–1.3 kg/dm³.
For pumps without an internal self-flow circulation cooling system, the exposed motor part above the liquid level shall not exceed 1/2.
The applicable range for cast iron material is pH 5–9.
The 1Cr18Ni9Ti stainless steel material can be used for various corrosive media.

Note: If users have special requirements for temperature, medium, etc., please specify the detailed information of the conveyed medium when ordering, so that our company can provide a more reliable product.

Structure

LWP LW Series Stainless Steel Vertical Sewage Pump Exploded Assembly View | JPZX

No.	Model	Caliber (mm)	Flow Rate (m³/h)	Head (m)	Speed (r/min)	Power (kW)	Efficiency (%)
1	25LW7-8-0.55	25	7	8	2900	0.55	45
2	25LW8-25-1.1	25	8	25	2900	1.1	45
3	32LW8-12-0.75	32	8	12	2900	0.75	48
4	40LW12-15-1.5	40	12	15	2900	1.5	48
5	50LW20-7-0.75	50	20	7	2900	0.75	62
6	50LW10-10-0.75	50	10	10	2900	0.75	54
7	50LW20-15-1.5	50	20	15	2900	1.5	51
8	50LW15-30-2.2	50	15	30	2900	2.2	51
9	50LW17-25-3	50	17	25	2900	3	53
10	50LW25-12-5.5	50	25	12	2900	5.5	49
11	65LW25-15-2.2	65	25	15	2900	2.2	52
12	65LW127-3	65	37	13	2900	3	60
13	65LW25-30-4	65	25	30	2900	4	58
14	80LW40-7-2.2	80	40	7	2900	2.2	50
15	80LW15-15-7.5	80	80	15	1450	7.5	45
16	80LW100-32-18.5	80	100	32	2900	18.5	65
17	80LW40-15-4	80	40	15	2900	4	57
18	80LW65-25-7.5	80	65	25	2900	7.5	56
19	100LW80-20-4	100	80	20	1450	4	62
20	100LW100-35-18.5	100	100	35	2800	18.5	67
21	100LW65-15-5.5	100	65	15	1450	5.5	59
22	100LW100-15-7.5	100	100	15	1450	7.5	70
23	100LW85-20-7.5	100	85	20	1450	7.5	71
24	100LW50-30-11	100	100	20	1450	11	61
25	150LW145-9-7.5	150	145	9	1450	7.5	68
26	150LW200-10-15	150	200	10	1450	15	44
27	150LW180-15-15	150	180	15	1450	15	67
28	150LW180-20-18.5	150	180	20	1450	18.5	74
29	150LW150-26-18.5	150	150	26	1450	18.5	72
30	150LW100-35-22	150	100	35	1450	22	69
31	150LW200-30-37	150	200	30	1450	37	65
32	150LW150-35-37	150	150	35	1450	37	63
33	200LW300-7-11	200	300	7	980	11	75
34	200LW250-11-15	200	250	11	1450	15	72
35	200LW250-15-18.5	200	250	15	1450	18.5	72
36	200LW400-10-22	200	400	10	1450	22	73
37	200LW300-15-22	200	300	15	1450	22	71
38	200LW400-13-30	200	400	13	1450	30	76
39	200LW250-22-30	200	250	22	1450	30	71
40	200LW300-25-37	200	300	25	1450	37	73
41	200LW250-35-45	200	250	35	1450	45	69
42	200LW400-30-55	200	400	30	1450	55	72
43	250LW600-9-30	250	600	9	980	30	78
44	250LW600-12-37	250	600	12	1450	37	76
45	250LW600-15-45	250	600	15	1450	45	71
46	250LW600-20-55	250	600	20	1450	55	73
47	250LW600-25-75	250	600	25	1450	75	71
48	300LW600-12-45	300	600	12	980	45	74
49	300LW460-15-45	300	460	15	1450	45	66
50	300LW400-20-45	300	400	20	1450	45	64
51	300LW600-20-55	300	600	20	1450	55	73
52	300LW800-20-75	300	800	20	1450	75	75
53	300LW950-20-90	300	950	20	1450	90	76
54	300LW950-24-110	300	950	24	1450	110	76
55	350LW1100-10-45	350	1100	10	980	45	85
56	350LW1140-13-75	350	1140	13	980	75	84
57	350LW1200-15-90	350	1200	15	980	90	81
58	350LW1130-18-90	350	1130	18	980	90	83
59	350LW1250-19.5-110	350	1250	19.5	740	110	83
60	350LW1500-20.5-132	350	1500	20.5	740	132	82
61	350LW1500-26-160	350	1500	26	740	160	83
62	400LW1000-9.5-75	400	1000	9.5	740	75	85
63	400LW1690-12-90	400	1690	12	980	90	85
64	400LW2000-13.5-110	400	2000	13.5	980	110	85
65	400LW1700-22-160	400	1700	22	740	160	83.5
66	400LW2000-18.4-160	400	2000	18.4	980	160	85
67	400LW1950-23-185	400	1950	23	980	185	85
68	400LW1980-26-220	400	1980	26	980	220	83
69	400LW1800-32-250	400	1800	32	740	250	82
70	450LW2300-9.5-90	450	2300	9.5	740	90	85
71	450LW2250-11-110	450	2250	11	740	110	85
72	450LW2260-14-132	450	2260	14	740	132	85
73	450LW2200-20-185	450	2200	20	740	185	83
74	450LW2300-25-250	450	2300	25	740	250	83
75	450LW2300-29-280	450	2300	29	740	280	83
76	450LW2100-36-315	450	2100	36	740	315	83
77	500LW2490-10-110	500	2490	10	740	110	85
78	500LW2500-16-160	500	2500	16	740	160	85
79	500LW2490-18.5-185	500	2490	18.5	740	185	85
80	500LW2500-12-132	500	2500	12	740	132	85
81	500LW2400-22-220	500	2400	22	740	220	85
82	500LW2650-24-250	500	2650	24	740	250	85
83	500LW2400-28-280	500	2400	28	740	280	85

Q1: What is the main structural difference between the LWP/LW series and the GW pipeline sewage pump series?

While the GW series features an in-line design with suction and discharge on the same horizontal line, the LWP/LW series features a vertical base-mounted design with a lower side inlet and a higher side outlet. This structural configuration offers a broader pump body cavity and higher stability, making it ideal for pump stations with offset piping or installations requiring dedicated foundation mounting.

Q2: How does the LWP/LW sewage pump handle solids and prevent impeller clogging?

The LWP/LW pump is engineered with a non-clogging single/double-flow hydraulic impeller and a widened volute casing. It allows large-diameter solid particles, suspended debris, and long fibrous materials to pass through easily without wrapping around the shaft, making it effective for untreated wastewater and municipal sludge.

Q3: How do I choose between Cast Iron and Stainless Steel options for different wastewater applications?

Cast Iron: Best suited for standard municipal sewage, rainwater drainage, residential building wastewater, and non-corrosive industrial effluents.

Stainless Steel (304/316): Essential for corrosive chemical wastewater, food processing plant discharge, acidic/alkaline industrial fluids, and applications requiring high hygiene or chemical resistance.

Q4: Is the LWP/LW vertical pump self-priming, and how should it be installed in a pump station?

No, it is a non-self-priming centrifugal pump. It must be installed under flooded suction conditions (where the liquid level in the collection pit is higher than the pump inlet) or paired with a foot valve/vacuum priming system. Its dry-installation setup allows engineers to perform routine maintenance in clean, safe conditions without touching submerged wastewater.

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