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WQ Seriese Submersible Sewage Pump


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The WQ series submersible sewage pump is a high-efficiency, durable pumping solution specifically engineered for handling wastewater containing solid particles, fibers and other impurities. Featuring an integrated motor-pump design for complete submersion operation, it is ideal for municipal drainage, industrial wastewater treatment, building basement sewage discharge, agricultural irrigation drainage and similar applications. The WQ series sewage pump is a well-established, versatile wastewater pump with a power range from 0.75kW to 40kW. Capable of achieving heads up to 50 meters and flow rates reaching 100 m³/h, it serves diverse applications.

Product Description

FAQ

Key Features

High-Efficiency Wastewater Handling

Large passage impeller or vortex design allows smooth passage of 25-80mm solids (model dependent)

Optional cutting mechanism available for shredding fibers/plastics in viscous fluids

Robust Construction

Housing Materials: Cast iron (standard) or 304/316 stainless steel (corrosion-resistant)
Dual mechanical seals: Silicon carbide/tungsten carbide sealing for maximum motor protection

Intelligent Operation

Optional float switch or level sensor for automatic start/stop

Built-in thermal protection prevents dry-run damage

Energy Saving

Optimized hydraulic design reduces energy consumption by 15-20% versus conventional pumps

Complies with IE3 efficiency standards for continuous operation

Easy Installation

Compact design supports guide rail or coupling installation

Standard IP68 waterproof cable for 10-20m submersion

Operating conditions

Maximum fluid temperature up to +40℃.Maximum sand content:0.25%.

Motor and Pump

Rewindable motor Three-phase:380V-415V/50Hz Single-phase:220V-240V/50Hz

Options on request

Stainless steel Corp

Multi impellers

Special mechanical seal

Other voltages or frequency 60 Hz

Performance Curve Diagram

Technical Data
MODEL	Flow (m³/h)	Head (m)	Power (W)	Voltage (V)	Rotary velocity (r/min)	Caliber (mm)	Efficiency (%)	Automatic coupler
WQ10-10-0.75	10	10	0.75	220/380	2850	50	45	GAK-50
WQ10-15-1.1	10	15	1.1	220/380	2850	50	48
WQ15-15-1.5	15	15	1.5	380	2850	50	50
WQ15-20-2.2	15	20	2.2	380	2850	50	54
WQ15-30-3.0	15	30	3.0	380	2850	50	58
WQ15-35-4.0	15	35	4.0	380	2850	50	60
WQ15-40-5.5	15	40	5.5	380	2850	50	63
WQ25-40-7.5	25	40	7.5	380	2850	50	65
WQ15-10-1.1	15	10	1.1	220/380	2850	65	48	GAK-65
WQ25-10-1.5	25	10	1.5	380	2850	65	50
WQ25-18-2.2	25	18	2.2	380	2850	65	54
WQ25-24-3.0	25	24	3.0	380	2850	65	58
WQ25-30-4.0	25	30	4.0	380	2850	65	60
WQ25-35-5.5	25	35	5.5	380	2850	65	63
WQ30-35-7.5	30	35	7.5	380	2850	65	65
WQ30-7-0.75	30	7	0.75	220/380	2850	80	45	GAK-80
WQ45-9-2.2	45	9	2.2	380	2850	80	54
WQ45-12-3.0	45	12	3.0	380	2850	80	58
WQ30-26-4.0	30	26	4.0	380	2850	80	60
WQ30-30-5.5	30	30	5.5	380	2850	80	63
WQ45-22-7.5	45	22	7.5	380	2850	80	65
WQ30-45-11	30	45	11	380	2850	80	67
WQ30-60-15	30	60	15	380	2850	80	71
WQ60-7-3.0	60	7	3.0	380	2850	100	58	GAK-100
WQ60-10-4.0	60	10	4.0	380	2850	100	60
WQ65-18-5.5	65	18	5.5	380	2850	100	63
WQ100-15-7.5	100	15	7.5	380	2850	100	65
WQ100-25-11	100	25	11	380	2850	100	67
WQ100-30-15	100	30	15	380	2850	100	71
WQ100-35-18.5	100	35	18.5	380	2850	100	73
WQ100-40-22	100	40	22	380	2850	100	75
WQ100-7-5.5	.100	7	5.5	380	2850	150	63	GAK-150
WQ120-10-7.5	120	10	7.5	380	2850	150	65
WQ130-15-11	130	15	11	380	2850	150	67
WQ180-15-15	180	15	15	380	2850	150	71
WQ180-20-18.5	180	20	18.5	380	2850	150	75
WQ180-25-22	180	25	22	380	2850	150	76
WQ180-30-30	180	30	30	380	2850	150	78
WQ180-37-37	180	37	37	380	2850	150	79
WQ180-45-45	180	45	45	380	2850	150	81
WQ300-7-11	300	7	11	380	2850	200	67	GAK-200
WQ400-7-15	400	7	15	380	2850	200	71
WQ250-13-18.5	250	13	18.5	380	2850	200	75
WQ400-10-22	400	10	22	380	2850	200	76
WQ250-22-30	250	22	30	380	2850	200	78
WQ350-25-37	350	25	37	380	2850	200	79
WQ400-30-45	400	30	45	380	2850	200	81
WQ300-40-55	300	40	55	380	2850	200	83

Typical Applications

Municipal: WWTPs, water drainage, sewer maintenance
Industrial: Paper mills, food processing, chemical plants
Construction: Basements, underground parking drainage
Agriculture: Farmland drainage, aquaculture wastewater

How to Select the Right WQ Series Submersible Sewage Pump

1. Determine Key Performance Requirements

Flow Rate (Q): 5-3000 m³/h (select based on system demand)

Total Head (H): 5-50m (consider vertical lift + pipe friction losses)

Solid Handling: 25-80mm particle size capacity (standard/cutter models available)

2. Material Selection Guide

Liquid Type Recommended Material pH Range Special Features

Municipal sewage Cast iron (epoxy coated) 6-9 Cost-effective

Industrial wastewater 304/316 stainless steel 2-11 Corrosion-resistant

Chemical fluids Dual-phase stainless steel 1-13 Extreme corrosion protection

3. Motor Configuration

Single-phase: 0.75-3kW (residential/small commercial)

Three-phase: 3-40kW (industrial applications)

Voltage options: 220V/380V/415V/480V

4. Special Feature Options

Automatic float switch control

Anti-clog vortex impeller (V) or cutter mechanism (C)

Oil leakage sensor + moisture detection

Explosion-proof version (Ex d IIB T4)

Remote monitoring capability

5. Application-Based Selection Table

Application Model Series Flow Range Head Range Key Feature

Residential drainage WQ10 5-15 m³/h 5-15m Float switch

Commercial buildings WQ30 20-50 m³/h 15-30m Anti-clog design

Industrial plants WQ100 50-200 m³/h 20-40m SS construction

Municipal WWTP WQ300 200-3000 m³/h 10-30m Cutter system

6. Installation Considerations

Wet pit dimensions (minimum submergence required)

Discharge connection (flange size/DN standard)

Guide rail vs. coupling installation

Cable length (standard 10m, customizable)

Pro Tip: For abrasive fluids, select models with:

Hardened stainless steel impellers

Tungsten carbide mechanical seals

Replaceable wear plates

FAQs

Need Assistance?

Provide these details for optimal selection:
1. Liquid characteristics (temperature, viscosity, solids content)
2. System curve data (flow/head requirements)
3. Electrical specifications
4. Special environmental conditions
Note: For liquids with >40°C temperature or >1000mg/L abrasives, consult our engineering team for customized solutions.
Flow & Head Requirements
Power Supply (220V or 380V?)
We' recommend the best model!
What Makes SRM Pumps Different?

With over 40 years of expertise in professional pump manufacturing, SRM Group—a Top 500 Enterprise in China—stands out for its:
Mature Production System – Rigorous quality control ensures reliable, high-performance pumps.
Customer-Centric Approach – We customize solutions to meet specific needs.
End-to-End Support – Beyond a 1-year warranty, we provide ongoing service assistance.
Choose SRM for durable, tailored pumping solutions backed by decades of industry leadership.
How to Purchase SRM Pumps?

Purchasing SRM pumps is simple:
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(A dedicated representative will assist you promptly.)
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Custom Branding Option – We support OEM/ODM services and can produce pumps with your logo, provided you:
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