DN40-DN100 Vertical Tank External Submerged Pump

Model NO. PWSCWY

Flow Range：10-100m³/h
Head Range：5-85m
Inlet/Outlet Range：DN40-DN100
Motor Power：0.55-75kw
Submersible Depth：0.5-5m

Quantity

Vertical Tank External Submerged Pump

A leak-free plastic water pump designed for corrosive, toxic, or high-purity chemical media. Featuring a plastic pump body immersed in liquid and an externally mounted motor, it solves traditional sealing issues while ensuring safety for flammable/explosive environments. Ideal for chemical, pharmaceutical, and high-purity industries.

Structural Features

ExternalTankDesign

The plastic pump body is vertically installed on the outside of the storage tank. Only the impeller, pump shaft and sheath are immersed in the medium (the immersion depth is usually 0.5m below the liquid surface), while the motor and bearing assembly are located above the liquid surface.

VerticalStructure

The pump body is installed vertically, occupying a small area and is suitable for occasions with limited space.

Working Principle

The motor drives the pump to rotate through the long shaft, causing the impeller to rotate synchronously. A negative pressure zone is formed at the center of the impeller.
The medium is sucked in through the suction port, accelerated by the impeller, and then discharged from the discharge port, achieving continuous circulation of the liquid.

Application Scenarios

ChemicalIndustry

It is used for transporting corrosive liquids, such as acids, alkalis, salt solutions, etc.

ElectroplatingIndustry

For the circulation of the liquid in the plating bath and transmission, such as chemical liquid copper, gold plated, nickel plating solution, etc.

EnvironmentalProtection

Sewage treatment, waste gas scrubber and other equipment used for the liquid circulation and transmission.

FAQ

Q1: What are the main applications of this submerged vertical pump?
A: It is widely used in chemical processing, wastewater treatment, electroplating, and environmental engineering to transfer corrosive, neutral, or hazardous liquids from tanks, sumps, and pits.

Q2What materials are available for wet end parts?

A:-Metals: Stainless Steel (304, 316L), Duplex Stainless Steel (2205), Hastelloy, etc.

-Plastics / Fluoropolymers: PP, PVDF, PTFE (ideal for strong acids, alkalis, and severe corrosive fluids).

PWS’s Vertical Tank External Submerged Pump is engineered to meet stringent demands in corrosive or chemically aggressive applications, where the resilience of plastic pumps is essential for safe, efficient operation. As a specialized plastic water pump designed for external submersion in tanks containing acids, alkalis, or industrial wastewater, its technical specifications balance hydraulic performance, material compatibility, and durability. Key parameters include a corrosion-resistant plastic casing (e.g., PP, PVDF, or PVC) with chemically inert seals, flow rates optimized for low-to-medium viscosity media, and head capabilities suited for tank-to-process transfers.

Model	Inlet x Outlet DN (mm)	Pole Number (P)	Power (kW)	50Hz Flow Rate (m3m^3m3 /h)	50Hz Head (m)
40NHCW-1	50*40	2	0.75	15	13

40NHCW-2	50*40	2	1.5	21	17

50NHCW-3	65*50	2	2.2	28	21

50NHCW-5	65*50	2	3.75	40	23

65NHCW-7.5	80*65	2	5.5	60	28

65NHCW-10	80*65	2	7.5	80	30

100NHCW-15	100*100	2	11	105	30

100NHCW-20	100*100	2	15	120	38

125NHCW-20	125*125	2	15	200	42

125NHCW-25	125*125	2	18.5	250	45

125NHCW-30	125*125	2	22	300	48

Note:Custom materials, voltages, and special specifications for high head/large flow available. Max. specific gravity: 1.2

PWS’s Vertical Tank External Submerged Pump is engineered with corrosion-resistant components optimized for harsh chemical environments, where the reliability of plastic pumps is critical to operational safety and longevity. As a specialized plastic water pump designed for external submersion in storage tanks handling acids, alkalis, or industrial effluents, its core parts—from the chemically inert plastic casing to the precision-engineered seals—are tailored to prevent leaks, material degradation, or mechanical failure. This overview highlights the materials, designs of key components that enable the pump to withstand aggressive media while maintaining hydraulic efficiency, ensuring seamless integration into chemical processing, wastewater treatment, or corrosive fluid transfer systems.

No.	Description	No.	Description	No.	Description
1	Motor	7	Upper Seat / Upper Base	13	Impeller Nut

2	Motor Adapter / Connector	8	Front Cover O-Ring	14	Nut

3	Ceramic Liquid Seal	9	Impeller	15	Screw / Bolt

4	O-Ring	10	Impeller Nut O-Ring	16	Impeller Key

5	V-Ring	11	Front Cover	17	Screw / Bolt

6	Main Body / Casing	12	Screw / Bolt

PWS’s Vertical Tank External Submerged Pump performance curves offer essential guidance for optimizing the operation of plastic pumps in chemical transfer, corrosive liquid handling, or industrial storage applications. As a durable plastic water pump designed for external submersion in tanks containing aggressive media (e.g., acids, alkalis, or wastewater), these curves illustrate hydraulic performance metrics—such as flow rate, head pressure, and efficiency—across operational ranges, enabling precise sizing for applications like chemical dosing, electroplating baths, or water treatment systems.

Proper installation of PWS’s Vertical Tank External Submerged Pump is critical to ensuring reliable performance in corrosive or chemically aggressive environments, where the durability of plastic pumps is paramount. As a specialized plastic water pump designed for external submersion in storage tanks, this model requires precise alignment, secure piping connections, and electrical integration to prevent leaks, vibration, or material degradation caused by harsh media.

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