WQ/QW Submersible Sewage Pump – Non-Clog Wastewater Pump

Product Description

Model Code Explanation

Product Overview

The WQ/QW non-clogging submersible sewage pump is a new generation of wastewater pump developed through extensive research and multiple technical improvements by our engineering team. All performance indicators have passed strict testing. The pump features outstanding energy efficiency, anti-winding capability, non-clogging structure, automatic installation, and automatic control. It delivers excellent performance in handling solid particles and long-fiber debris.

Flow rate: 7–2400 m³/h, Head: 7–60 m.
According to different media types and installation requirements, products with equivalent performance parameters can also be supplied in WL, YW, and GW series.

Product Features

1. The pump adopts a unique single-vane or double-vane impeller design, greatly improving its solid-passing capability. It can effectively pass fibrous materials up to five times the pump’s inlet diameter and solid particles up to approximately 50% of the inlet diameter.
2. The mechanical seal uses advanced corrosion-resistant carbide materials, allowing continuous safe operation of more than 8,000 hours.
3. Compact structure, small footprint, low noise, and easy maintenance. The pump works when fully submerged in water, eliminating the need for a pump house and greatly reducing construction costs.
4. The sealed oil chamber is equipped with a high-precision anti-interference leakage sensor. A thermal protector is embedded in the stator winding for automatic motor protection.
5. An optional fully automatic control panel can be supplied to protect against leakage, overload, overheating, and other operating faults, improving overall safety and reliability.
6. A float switch can automatically control pump start and stop according to liquid level changes, eliminating the need for manual supervision.
7. The WQ series can be equipped with a dual-guide automatic coupling system for easy installation and maintenance without entering the sewage pit.
8. The pump can operate across the full head range without overloading the motor.
9. Two installation methods are available: fixed automatic coupling installation and mobile free installation.

Applications

Suitable for industries such as chemical, petroleum, pharmaceuticals, mining, paper-making, cement plants, steel mills, power plants, coal processing, as well as municipal sewage plants, urban drainage systems, construction sites, and municipal engineering.
It is used for pumping sewage and wastewater containing solids, and can also be used for clean water or mildly corrosive liquids.

Operating Conditions

1. Medium temperature should not exceed 60℃; medium density: 1–1.3 kg/dm³.
2. For pumps without an internal self-circulation cooling system, the motor section must not be exposed above the liquid surface by more than one-third.
3. Cast iron pumps are suitable for media with pH 5–9.
4. 1Cr18Ni9Ti stainless steel pumps are suitable for general corrosive media.
5. Installation altitude should not exceed 1000 m. For higher-altitude applications, please specify when ordering so we can provide a more reliable configuration.

Note:
If you require special temperature or medium conditions, please specify the detailed characteristics of the liquid when placing the order so we may supply the most reliable product configuration.

Structure Diagram

No.	Name	No.	Name	No.	Name	No.	Name
1	Signal Cable	6	Upper Bearing Seat	11	Oil-Water Probe	16	Impeller Bolt
2	Motor Lead Wire	7	Motor Housing	12	Oil Chamber	17	Impeller
3	Terminal Box	8	Stator	13	Mechanical Seal	18	Seal Ring
4	Motor Cover	9	Shaft (Rotor)	14	Rear Cover Plate	19	Base Plate
5	Bearing	10	Bearing	15	Pump Body

 

Installation Dimensions

Performance Parameters

Model	Port Size	Flow Rate	Head	Speed	Power	Efficiency	A	B	C	D	H	Auto Coupler
	mm	(m3/h)	(M)	(r/min)	(kw)	(%)
25-7-8-0.55	25	7	8	2900	0.55	45	120	360	225	210	540
25-8-22-1.1	25	8	22	2900	1.1	45	120	360	225	210	540
32-8-12-0.75	32	8	12	2900	0.75	48	120	360	225	210	540
32-12-15-1.1	32	12	15	2900	1.1	45	120	360	225	210	540
40-15-15-1.5	40	15	15	2900	1.5	48	120	360	225	210	540
40-15-30-2.2	40	15	30	2900	2.2	54	120	360	225	210	540
50-20-7-0.75	50	20	7	2900	0.75	51	145	440	275	185	520	GAK-50
50-10-10-0.75	50	10	10	2900	0.75	52	120	250	230	185	520	GAK-50
50-20-15-1.5	50	20	15	290	1.5	53	120	250	230	210	564	GAK-50
50-15-25-2.2	50	15	25	2900	2.2	54	145	410	245	205	550	GAK-50
50-18-30-3	50	18	30	2900	3	55	155	420	250	260	660	GAK-50
50-40-15-4	50	40	15	2900	4	55	140	457	264	310	730	GAK-50
50-25-32-5.5	50	25	32	2900	5.5	55	165	480	285	310	770	GAK-50
50-20-40-7.5	50	50	20	2900	7.5	58	175	480	285	310	770	GAK-50
65-25-15-2.2	65	25	15	2900	2.2	50	145	450	280	205	570	GAK-65
65-37-13-3	65	37	13	2900	3	57	165	475	305	260	652	GAK-65
65-25-30-4	65	25	30	2900	4	61	170	505	300	325	710	GAK-65
65-30-40-7.5	65	30	40	2900	7.5	56						GAK-65
65-35-50-11	65	35	50	2900	11	45	165	460	300	350	920	GAK-65
65-35-60-15	65	35	60	2900	15	65	165	460	300	350	920	GAK-65
80-40-7-2.2	80	40	7	1450	2.2	59	165	510	330	260	640	GAK-80
80-43-13-3	80	43	13	2900	3	70	165	540	330	325	652	GAK-80
80-40-15-4	80	40	15	2900	4	61	180	565	330	325	775	GAK-80
80-60-13-5.5	80	60	13	2900	5.5	67	165	565	330	325	775	GAK-80
80-65-25-7.5	80	65	25	2900	7.5	63	180	656	330	325	775	GAK-80
Model	Port Size	Flow Rate	Head	Speed	Power	Efficiency	A	B	C	D	H	Auto Coupler
	mm	(m3/h)	(M)	(r/min)	(kw)	(%)
100-80-10-4	100	100	10	1450	4	65	220	700	430	420	800	GAK-100
100-100-15-7.5	100	100	15	1450	7.5	68	225	690	420	420	825	GAK-100
100-80-20-7.5	100	80	20	1450	7.5	65	225	690	420	420	825	GAK-100
100-100-25-11	100	100	25	1450	11	70	225	690	450	520	940	GAK-100
100-100-30-15	100	100	30	1450	15	65						GAK-100
100-100-35-18.5	100	100	35	1450	18.5	68	225	680	410	420	970	GAK-100
125-130-15-11	125	130	15	1450	11	72						GAK-125
125-130-20-15	125	130	20	1450	15	75						GAK-125
150-145-9-7.5	150	145	9	1450	7.5	76	225	800	510	420	795	GAK-150
150-180-15-15	150	180	15	1450	15	69	275	950	610	520	1060	GAK-150
150-180-20-18.5	150	180	20	1450	18.5	72	250	925	858	520	1060	GAK-150
150-180-25-22	150	180	25	1450	22	78	260	925	585	520	1060	GAK-150
150-130-30-22	150	130	30	1450	22	78	260	925	585	520	1060	GAK-150
150-180-30-30	150	180	30	1450	30	78						GAK-150
150-200-30-37	150	200	30	1450	37	73	275	1025	650	520	1320	GAK-150
200-300-7-11	200	300	7	980	11	66	290	990	610	520	1150	GAK-200
200-250-11-15	200	250	11	1450	15	64	270	970	600	520	1120	GAK-200
200-250-15-18.5	200	250	15	1450	18.5	73	290	1130	715	520	1130	GAK-200
200-400-10-22	200	400	10	1450	22	75	275	1120	710	520	1130	GAK-200
200-400-13-30	200	400	13	14501	30	76	275	1120	710	520	1320	GAK-200
200-300-15-22	200	300	15	1450	22	76	275	1120	710	520	1130	GAK-200
200-250-22-30	200	250	22	1450	30	71	275	1120	710	520	1290	GAK-200
200-350-25-37	200	350	25	1450	37	71	325	1080	680	520	1370	GAK-200
200-400-30-45	200	400	30	1450	45	74	330	1250	780	520	1370	GAK-200
Model	Port Size	Flow Rate	Head	Speed	Power	Efficiency	A	B	C	D	H	Auto Coupler
	mm	(m3/h)	(M)	(r/min)	(kw)	(%)
250-600-9-30	250	600	9	980	30	78	440	1100	700	520	1660	GAK-250
250-600-12-37	250	600	12	1450	37	76	440	1100	700	520	1660	GAK-250
250-600-15-45	250	600	15	1450	45	73	440	1100	700	520	1660	GAK-250
250-600-20-55	250	600	20	1450	55	73	440	1100	700	520	1700	GAK-250
250-600-25-75	250	600	25	1450	75	71	440	1100	700	520	1750	GAK-250
300-800-12-45	300	800	12	980	45	74	470	1305	850	650	1845	GAK-300
300-480-15-45	300	480	15	1450	45	66	470	1305	850	650	1845	GAK-300
300-800-15-55	300	800	15	1450	55	73	470	1305	850	650	2060	GAK-300
300-600-20-55	300	600	20	1450	55	73	470	1305	850	650	2060	GAK-300
300-800-20-75	300	800	20	1450	75	75	470	1305	850	650	2120	GAK-300
300-950-20-90	300	950	20	1450	90	76	470	1305	850	650	2120	GAK-300
300-1000-25-110	300	1000	25	1450	110	76	500	1350	875	650	2220	GAK-300
300-1100-10-55	300	1100	10	1450	55	73						GAK-300
350-1500-15-90	350	1500	15	740	90	87	630	1533	1280	700	2190	GAK-350
350-1200-18-90	350	1200	18	980	90	85	500	900	500	750	2190	GAK-350
350-1100-28-132	350	1100	28	980	132	84	700	1616	1363	700	2480	GAK-350
350-1000-36-160	350	1000	36	980	160	84	700	1666	1413	700	2590	GAK-350
400-1760-7.5-55	400	1760	7.5	980	55	83						GAK-400
400-1500-10-75	400	1500	10	980	75	86	600	1650	1365	780	2000	GAK-400
400-2000-13-110	400	2000	13	980	110	84	600	1650	1365	780	2280	GAK-400
400-2000-15-132	400	2000	15	980	132	83						GAK-400
400-1700-22-160	400	1700	22	980	160	83	630	1670	1380	780	2600	GAK-400
400-1500-26-160	400	1500	26	980	160	84	630	1670	1380	780	2600	GAK-400
Model	Port Size	Flow Rate	Head	Speed	Power	Efficiency	A	B	C	D	H	Auto Coupler
	mm	(m3/h)	(M)	(r/min)	(kw)	(%)
400-1800-32-250	400	1800	32	980	250	82	670	1730	1440	780	2850	GAK-400
500-2500-10-110	500	2500	10	740	110	85	900	2218	1875	900	2250	GAK-500
500-2600-15-160	500	2600	15	740	160	84	955	1968	1625	900	2450	GAK-500
500-2400-22-220	500	2400	22	740	220	85	900	2218	1875	900	2520	GAK-500
500-2650-24-250	500	2650	24	740	250	85	1017	2198	2395	900	3000	GAK-500

Operation, Inspection and Maintenance

1. Notes for Use

1. The pump must not be used in flammable or explosive environments, nor should it be used to handle combustible liquids.
2. Do not strike, crush, or roll over the power cable. Never use the cable as a lifting rope. Do not pull the cable while the pump is running, as it may damage the insulation, cause leakage, or reduce the sealing performance of the cable and motor junction box.
3. When using a fixed automatic coupling installation, lift the pump with a lifting chain attached to the handle. Lift and lower gently to avoid impact.
4. When lowering the pump into the water, it must be lifted vertically. Do not place the pump horizontally or allow it to sink into sludge.
5. A flow-regulating valve should be installed on the discharge pipeline to prevent excessive flow that may overload the motor.

OEM & Custom Solutions

Chaodun Pump offers OEM/ODM customization for WQ/QW series, including voltage, material, flow customization, and export packaging. Logo printing and documentation customization available for global distributors.

FAQs for Overseas Buyers

1. What is the WQ/QW submersible pump used for?
It is designed for sewage, slurry, and wastewater discharge in municipal, industrial, and agricultural systems.

2. Can it handle solids and fibers?
Yes, the impeller allows fibers 5× inlet size and solids up to 50% outlet diameter.

3. What’s the max temperature for operation?
Up to 60°C for normal models.

4. Can it operate dry?
No, dry running is prohibited to prevent motor damage.

5. Is stainless steel version available?
Yes, 1Cr18Ni9Ti stainless steel available for mild corrosive liquids.

6. What installation options exist?
Fixed coupling installation or portable mobile type.

7. Does Chaodun Pump offer export OEM service?
Yes, full OEM/ODM customization for international buyers.