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Motor Power：0.75~110 kW Inlet/Outlet Range：DN50-DN200 QW Stainless Steel Submersible Sewage Pump

Flow Range：5~400 m³/h
Head Range：7-60m
Motor Power：0.75~110 kW
Inlet/Outlet Range：DN50-DN200
Diving Depth：≤10 m

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QW Stainless Steel Submersible Sewage Pump

The QW stainless steel submersible sewage pump from WYT is a top-tier ejector pumps for sewage category, engineered for high efficiency and exceptional durability. Specifically designed to manage sewage laden with solid particles and long fibers, this pump excels in challenging conditions. Its core components, crafted from premium stainless steel, boast outstanding corrosion resistance, ensuring reliable performance even in harsh environments. Widely applicable across industries such as chemical processing, petroleum, pharmaceuticals, mining, papermaking, municipal engineering, and construction sites, it stands as a versatile and robust solution, comparable to the reliability of a liberty sewage ejector pump in its class.

Application Scenarios

Municipal and Industrial Sewage Discharge

Suitable for municipal sewage plants, factories, and residential stations, this sewage pump handles solid-laden wastewater. It also functions as a reliable sewage lift pump and integrates easily into any sewage pump setup.

Construction and Engineering Drainage

Used in construction site pit descending, underground garage drainage, human defense system drainage, and rapid stagnant water elimination, this sewage pump delivers reliable performance. It functions effectively as a sewage lift pump and integrates seamlessly into any sewage pump setup for demanding applications.

Agriculture and Environmental Protection

Used for farmland irrigation drainage, aquaculture sewage discharge, river and lake dredging and other project

Product Advantage

Intelligent liquid level control

Float switch automatically starts and stops the pump body according to the change of water level, no need to be manned, enhancing the operation convenience—a critical feature in any sewage pump application, whether for a sewage lift pump or part of a complete sewage pump setup.

Dual-rail coupling installation

Support fixed automatic coupling installation and mobile free installation, no need to enter the sewage pit during maintenance, reducing the risk of labor.

QW Stainless Steel Submersible Sewage Pump VS LW Vertical Dry‑installed Sewage Pump

QW Stainless Steel Submersible Sewage Pump VS LW Vertical Dry‑installed Sewage Pump
Item	QW Stainless Steel Submersible Sewage Pump	LW Vertical Dry‑installed Sewage Pump
Installation Mode	Operates fully under water; supports auto‑coupling and mobile installation, no ground foundation needed	Dry installation above liquid level, fixed on concrete foundation, requires pump room or platform
Priming Requirement	No priming needed, direct startup when meeting minimum submergence depth	Needs priming before start; dry‑run will damage mechanical seal
Noise & Space	Low noise absorbed by water, saves ground space, no pump room required	Higher noise, takes up ground space, extra pump‑room investment needed
Maintenance	Needs hoisting out of sump for inspection and repair	Easy on‑ground maintenance without hoisting
WTY Conclusion: QW submersible sewage pump is suitable for projects with limited ground space. LW dry‑type pump is preferred for frequent‑maintenance occasions.

FAQ for QW Stainless Steel Submersible Sewage Pump

Q1: What kind of media can QW stainless steel submersible sewage pump handle?

A: It is suitable for sewage containing solid particles and long‑fiber impurities. SS304 version works for general municipal wastewater; SS316 model can handle mildly corrosive sewage. Medium temperature shall not exceed 60℃, PH range 5‑9.

WTY Conclusion: This pump is a reliable choice for common municipal and building sewage lifting.

Q2: Does QW submersible sewage pump need priming before starting?

A: No priming is required. As long as the liquid level reaches the minimum submergence depth, the pump can start directly. But it shall not run when the motor part is exposed above water for long time.

WTY Conclusion: Submerged structure brings easy startup, avoiding priming work compared with dry‑type sewage pumps.

Q3: What installation options are available for QW stainless steel submersible sewage pump?

A: Two installation types are available: automatic coupling fixed installation for long‑term running, and mobile hose connection installation for temporary or emergency drainage.

WTY Conclusion: Dual‑installation design makes this pump adaptable to different site conditions.

The QW Stainless Steel Submersible Sewage Pump delivers superior wastewater handling with direct submersion capability. It eliminates complex piping and pressurized systems required by traditional ejector pumps for sewage, while outperforming Liberty sewage ejector pump models in corrosion resistance. As a heavy-duty submersible sewage pump, it handles challenging solids without clogging.

N o .	Model	ΦA	φB	φC	H	G	H1	H2	H3	h	N1-φK	g	p	f	y	N2-φd
1	25W8-22-1.1	120	25	90	550	150	250	300	100	16	4-φ16	260	230	310	215	4-φ14
2	32WQ12-15-1.1	120	32	90	550	150	250	300	100	16	4-φ16	260	230	310	215	4-φ14
3	40WQ15-15-1.5	100	40	130	600	70	270	360	100	16	4-φ16	260	230	310	215	4-φ14
4	40WQ15-30-2.2	100	40	130	600	70	270	360	100	16	4-φ16	260	230	310	215	4-φ14
5	50WQ20-7-0.75	110	50	140	550	70	270	350	100	16	4-φ16	260	230	310	215	4-φ14
6	50WQ10-10-0.75	110	50	140	550	70	270	350	100	16	4-φ16	260	230	310	215	4-φ14
7	50WQ12-15-1.5	110	50	140	600	70	270	380	100	16	4-φ16	260	230	310	215	4-φ14
8	50WQ15-15-1.5	110	50	140	600	70	270	380	100	16	4-φ16	260	230	310	215	4-φ14
9	50WQ18-15-1.5	110	50	140	600	70	270	380	100	16	4-φ16	260	230	310	215	4-φ14
10	50WQ20-15-1.5	110	50	140	600	70	270	380	100	16	4-φ16	260	230	310	215	4-φ14
11	50WQ25-10-1.5	110	50	140	600	70	270	380	100	16	4-φ16	260	230	310	215	4-φ14
12	50WQ15-22-2.2	110	50	140	600	70	270	400	100	16	4-φ16	260	230	310	215	4-φ14
13	50WQ15-25-2.2	110	50	140	600	70	270	400	100	16	4-φ16	260	230	310	215	4-φ14
14	50WQ20-15-2.2	110	50	140	600	70	270	400	100	16	4-φ16	260	230	310	215	4-φ14
15	50WQ27-15-2.2	110	50	140	600	70	270	400	100	16	4-φ16	260	230	310	215	4-φ14
16	50WQ42-9-2.2	110	50	140	600	70	270	400	100	16	4-φ16	260	230	310	215	4-φ14
17	50WQ18-30-3	110	50	140	630	70	270	450	100	16	4-φ16	260	230	310	215	4-φ14
18	50WQ25-22-4	110	50	140	600	70	270	450	100	16	4-φ16	260	230	310	215	4-φ14
19	50WQ25-32-5.5	110	50	140	730	70	270	450	100	16	4-φ16	260	230	310	215	4-φ14
20	50WQ20-40-7.5	110	50	140	730	70	270	450	100	16	4-φ16	260	230	310	215	4-φ14
21	50WQ30-30-7.5	110	50	140	730	70	270	450	100	16	4-φ16	260	230	310	215	4-φ14
22	65WQ20-15-2.2	130	65	160	610	100	315	400	150	20	4-φ18	275	250	300	225	4-φ14
23	65WC25-15-2.2	130	65	160	610	100	315	400	150	20	4-φ18	275	250	300	225	4-φ14
24	65WQ40-10-2.2	130	65	160	610	100	315	400	150	20	4-φ18	275	250	300	225	4-φ14
25	65WC37-13-3	130	65	160	630	100	315	420	150	20	4-φ18	275	250	300	225	4-φ14
26	65WQ25-27-4	130	65	160	680	100	315	500	150	20	4-φ18	275	250	300	225	4-φ14
27	65WC25-30-4	130	65	160	680	100	315	500	150	20	4-φ18	275	250	300	225	4-φ14
28	65WQ40-15-4	130	65	160	680	100	315	500	150	20	4-φ18	275	250	300	225	4-φ14
29	65WQ15-50-7.5	130	65	160	730	100	315	600	150	20	4-φ18	275	250	300	225	4-φ14
30	65WQ30-40-7.5	130	65	160	730	100	315	600	150	20	4-φ18	275	250	300	225	4-φ14
31	65WC36-50-11	130	65	160	920	100	315	800	150	20	4-φ18	275	250	300	225	4-φ14
32	65WQ35-60-15	130	65	160	920	100	315	800	150	20	4-φ18	275	250	300	225	4-φ14
33	80WQ40-7-2.2	150	80	190	650	100	360	440	150	25	4-φ18	290	260	330	260	4-φ18
34	80WQ43-13-3	150	80	190	700	100	360	480	150	25	4-φ18	290	260	330	260	4-φ18
35	80WQ50-10-3	150	80	190	700	100	360	480	150	25	4-φ18	290	260	330	260	4-φ18
36	80WQ40-15-4	150	80	190	740	100	360	480	150	25	4-φ18	290	260	330	260	4-φ18
37	80WQ60-13-4	150	80	190	740	100	360	480	150	25	4-φ18	290	260	330	260	4-φ18
38	80WC45-22-5.5	150	80	190	800	100	360	550	150	25	4-φ18	290	260	330	260	4-φ18
39	80WQ50-18-5.5	150	80	190	800	100	360	550	150	25	4-φ18	290	260	330	260	4-φ18
40	80WQ50-25-7.5	150	80	190	800	100	360	550	150	25	4-φ18	290	260	330	260	4-φ18
41	80WQ65-25-7.5	150	80	190	800	100	360	550	150	25	4-φ18	290	260	330	260	4-φ18
42	100WQ80-10-4	170	100	210	770	150	410	550	200	25	4-φ20	340	260	400	310	4-φ18
43	100WQ30-22-5.5	170	100	210	800	150	410	560	200	25	4-φ20	340	305	400	310	4-φ18
44	100WQ65-15-5.5	170	100	210	800	150	410	560	200	25	4-φ20	340	305	400	310	4-φ18
45	100WQ110-10-5.5	170	100	210	800	150	410	560	200	25	4-φ20	340	305	400	310	4-φ18
46	100WQ80-15-7.5	170	100	210	800	150	410	560	200	25	4-φ20	340	305	400	310	4-φ18
47	100WQ100-15-7.5	170	100	210	800	150	410	560	200	25	4-φ20	340	305	400	310	4-φ18
48	100WQ85-20-7.5	170	100	210	800	150	410	560	200	25	4-φ20	340	305	400	310	4-φ18
49	100WQ100-25-11	170	100	210	900	150	410	600	200	25	4-φ20	340	305	400	310	4-φ18
50	100WQ100-30-15	170	100	210	950	150	410	630	200	25	4-φ20	340	305	400	310	4-φ18
51	100WQ100-35-18.5	170	100	210	1000	150	410	690	200	25	4-φ20	340	305	400	310	4-φ18
52	125WQ130-15-11	200	125	240	960	200	525	630	250	25	4-φ20	600	520	560	480	4-φ18
53	125WQ130-20-15	200	125	240	960	200	525	630	250	25	4-φ20	600	520	560	480	4-φ18

Data is for reference only. Please consult our technical staff for further information.

Vertical rail deployment simplifies setup with no auxiliary vents or separate basins, a key advantage over ejector pumps for sewage. Retrofitting existing Liberty sewage ejector pump infrastructure requires minimal modifications. This submersible sewage pump integrates seamlessly via guided submersion and automatic float control.

l.Automaticcouplingdevicesysten
SuitableforIong-termfixeduseoccasions.withguickinstallation,testing.maintenanceandothe advantages.The systemusesa specialbase,fixed at thebottom of the sewage pit,and the outflowpipe connectedtothetopofthepooltoinstallagoodsupportingblock,withaguidebarsothatthetwoare thebase,anditsautomaticcoupling，sealing,andliftingisautomaticallydisengaged
2.Mobileinstallationsystem
Itissupportedbythebracket,connectedtothewaterhosecanwork,thiswayismainlyusedin emergencyormaintenanceconstructionneeds

The QW's curve demonstrates exceptional flow efficiency across variable pressures, consistently surpassing Liberty sewage ejector pump benchmarks. It achieves significantly higher throughput than conventional ejector pumps for sewage, while maintaining stable operation where standard submersible sewage pump units falter. Energy optimization is maximized throughout the duty cycle.

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We Usually Respond Within 24 Hours Between Monday-Friday

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Sales Manager：+39 389 949 9067
+86 198 1685 5829

Sales Representative：+39 349 721 3297

ivy@witneat.com

No. 8, North Road, Pump and Valve Industrial Zone, Dongou HE TIAN Industrial Zone

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WENZHOU WITNEAT FLUID EQUIPMENT CO., LTD.

IBAN: LU314080000047209373

Account Holder Name: WITNEAT FLUID EQUIPMENT CO., LTD.

Currency of Receipt: EUR GBP PLN

Bank Name: Banking Circle S.A.

Bank Location: Luxembourg

Bank Address: 2 Boulevard de la Foire L-1528 Luxembourg Luxembourg

Account Type: Checking

Swift Code: BCIRLULL (BCIRLULLXXX, if 11 characters are required)

Motor Power：0.75~110 kW Inlet/Outlet Range：DN50-DN200 QW Stainless Steel Submersible Sewage Pump

Application Scenarios

Product Advantage

Intelligent liquid level control

Float switch automatically starts and stops the pump body according to the change of water level, no need to be manned, enhancing the operation convenience—a critical feature in any sewage pump application, whether for a sewage lift pump or part of a complete sewage pump setup.

FAQ for QW Stainless Steel Submersible Sewage Pump

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