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The 200WQP400-20-37KW-4 is a large-flow 316 stainless steel submersible sewage pump designed for wastewater discharge, industrial wastewater treatment, municipal drainage, construction dewatering, and other applications requiring high-volume liquid transfer.
This model is designed for a rated flow of 400 m³/h, a head of 20 m, and a motor power of 37 kW. The pump is manufactured with 316 stainless steel, providing excellent corrosion resistance for demanding wastewater and industrial drainage environments.
As a WQP series submersible sewage pump, the unit can be installed directly in the liquid. Its submersible design helps simplify installation and reduces the need for a conventional dry pump room and long suction pipelines.
Main Product Specifications
Model:
200WQP400-20-37KW-4
Pump Type:
Submersible Sewage Pump
Rated Flow:
400 m³/h
Rated Head:
20 m
Motor Power:
37 kW
Main Material:
316 Stainless Steel
Pump Series:
WQP Series
Installation:
Submersible Installation
Application:
Wastewater, sewage, drainage water and liquids containing certain solid particles
The actual voltage, frequency, discharge size, speed, insulation class and other configurations can be customized or confirmed according to the project requirements.
316 Stainless Steel Construction
Excellent Corrosion Resistance: 316 stainless steel contains molybdenum, which provides better resistance to pitting and corrosion than many conventional stainless steel grades. This makes it suitable for wastewater treatment, industrial drainage and applications where the pumped liquid may have a certain level of corrosiveness.
Suitable for Industrial Wastewater: Industrial wastewater can contain complex chemical components and suspended solids. The 316 stainless steel construction provides improved material resistance for demanding industrial pumping systems. The final material selection should always be based on the actual chemical composition and operating conditions of the liquid.
Designed for Submersible Operation: The pump and motor are designed for submerged installation. The pump can be installed in a sewage sump, collection tank, drainage pit or wastewater tank, helping simplify the overall pumping system.
400 m³/h Large-Flow Pumping Capacity
The 200WQP400-20-37KW-4 is designed for a flow rate of 400 m³/h, making it suitable for large-volume drainage and wastewater transfer applications.
With a rated head of 20 m, this model is suitable for systems requiring relatively high flow at a moderate pumping head.
Pump selection should not be based on flow rate alone. The actual required head should include the static head and pipeline losses caused by pipe length, pipe diameter, valves, elbows and other system components. For a project requirement around 400 m³/h at 20 m head, this model can be considered as a reference pump, with final selection confirmed according to the actual system curve.
Working Principle
The 200WQP400-20-37KW-4 uses a submersible pump structure. When operating, the pump is immersed in the liquid and the rotating impeller generates centrifugal force to draw liquid into the pump and discharge it through the outlet pipeline.
The submersible configuration eliminates many of the suction-side requirements associated with conventional surface-mounted pumps.
It is suitable for installation in:
Sewage collection tanks
Wastewater sumps
Drainage pits
Municipal pumping stations
Industrial wastewater tanks
Construction drainage systems
For sewage applications, the solid particle size, fiber content and type of debris in the liquid should be considered when selecting the appropriate impeller and pump configuration.
Typical Applications
Municipal Sewage Drainage
Industrial Wastewater Treatment
Construction Dewatering
Wastewater Treatment Plants
Mining and Engineering Drainage
Large-Scale Drainage Systems
How to Select the 200WQP400-20-37KW-4
Proper submersible sewage pump selection should consider several key operating parameters:
Required Flow Rate: Determine the actual amount of wastewater that needs to be transferred. For this model, the reference rated flow is 400 m³/h.
Required Head: The model is designed for a 20 m rated head. However, the actual total dynamic head should be calculated based on the vertical lifting height and pipeline friction losses.
Pumped Liquid: Identify the liquid being pumped, such as municipal sewage, industrial wastewater, drainage water or other contaminated liquids.
Solid Particle Size: If the wastewater contains solid particles, fibers or debris, the particle size and concentration should be provided so the appropriate pump configuration can be selected.
Material Requirements: For relatively corrosive wastewater or applications requiring enhanced corrosion resistance, 316 stainless steel can be considered as a suitable material option, subject to chemical compatibility.
Frequently Asked Questions
What is the flow rate of the 200WQP400-20-37KW-4?
The reference rated flow is 400 m³/h.
What is the head of this submersible sewage pump?
The reference rated head is 20 m.
What is the motor power?
The model is equipped with a 37 kW motor.
What material is used for this pump?
The pump is manufactured using 316 stainless steel, making it suitable for applications requiring improved corrosion resistance.
Can this pump be used for industrial wastewater?
Yes. It can be considered for industrial wastewater applications. However, the wastewater temperature, chemical composition, corrosiveness, solid content and fiber content should be provided before final material and pump configuration are confirmed.
Is a 37 kW motor suitable for 400 m³/h at 20 m head?
The 200WQP400-20-37KW-4 is configured with a 37 kW motor for this pump specification. Final motor selection should be confirmed according to pump efficiency, liquid density, actual total dynamic head and operating conditions.
Can the submersible sewage pump run continuously?
Continuous operation depends on the motor design, liquid temperature, submergence level, cooling conditions and manufacturer operating requirements. For continuous-duty projects, the expected operating hours and site conditions should be provided for confirmation.
Why Choose a 316 Stainless Steel Submersible Sewage Pump?
Material selection is an important consideration when pumping industrial wastewater or other demanding liquids.
The 200WQP400-20-37KW-4 combines:
400 m³/h large flow
20 m rated head
37 kW motor power
316 stainless steel construction
Submersible installation
Large-volume wastewater pumping capability
This configuration makes it a potential solution for industrial wastewater, municipal drainage, wastewater treatment and large-scale dewatering projects.
Information Required for Pump Selection
To recommend the correct submersible sewage pump, buyers should provide the following information:
Required flow rate: m³/h
Required head: m
Pumped liquid
Liquid temperature
Solid particle size
Solid concentration
Chemical composition or corrosiveness
Voltage
Frequency
Installation method
Pipeline length
Discharge pipe diameter
Continuous or intermittent operation
Project location and operating environment
Required pump material
Based on these parameters, the pump model, motor power, material and electrical configuration can be confirmed more accurately.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
1986
Total Annual:
20000000-35000000
Employee Number:
301~500
Ecer Certification：
Verified Supplier
Zhengzhou Shenlong Pump Industry CO.,Ltd, a professional reputable ODM OEM water pump manufacturer in China since 1986, recognized by CE and ISO, ABS, SGS, BV.
Main products: Electric Submersible Pump for pumping clean water, hot water and sea water...
Zhengzhou Shenlong Pump Industry CO.,Ltd, a professional reputable ODM OEM water pump manufacturer in China since 1986, recognized by CE and ISO, ABS, SGS, BV.
Main products: Electric Submersible Pump for pumping clean water, hot water and sea water...
