HJ Centrifugal Chemical Pump

Product Introduction

HJ centrifugal chemical pump for corrosive, toxic, flammable, and particle-containing liquids. Custom materials, seals, motors, and performance.

Product Information

Pump type:

Horizontal single-stage centrifugal pump

Structure:

Single-suction, cantilever design

Flow capacity:

1.6–460 m³/h

Head:

4–132 m

Motor power:

0.44–78 kW

Maximum working pressure:

1.6 MPa at 20°C

The HJ centrifugal chemical pump is a horizontal, single-stage, single-suction pump for industrial chemical transfer. It is an improved version of the traditional IH chemical pump. Therefore, it offers a strong structure, stable performance, and easier maintenance.

The pump can transfer corrosive, toxic, flammable, and other demanding liquids. Selected models can also handle liquids that contain fine particles. As a chemical pump manufacturer, we match the hydraulic size, wetted material, shaft seal, motor, and base to each process.

The product shown has a DN90 suction flange, a DN65 discharge flange, and an explosion-proof motor. However, the final flow, head, and motor power must follow the selected performance curve.

Technical Specifications

Parameter	Typical Series Range
Pump type	Horizontal single-stage centrifugal pump
Structure	Single-suction, cantilever design
Flow capacity	1.6–460 m³/h
Head	4–132 m
Motor power	0.44–78 kW
Maximum working pressure	1.6 MPa at 20°C
Liquid temperature	−40°C to 180°C
Allowable liquid density	Up to 1.84 g/cm³
Design reference	ISO 2858 and GB/T 5656
Shaft seal	Packing or mechanical seal
Motor options	Standard or explosion-proof motor
Installation	Horizontal base-mounted unit
Visible flange size	DN90 inlet × DN65 outlet

These figures describe the general product range. Actual capacity depends on the pump model, speed, impeller size, liquid density, viscosity, temperature, and suction conditions.

Durable Chemical Process Pump Design

Liquid enters through the horizontal axial inlet. The rotating impeller then adds energy to the liquid. Next, the volute casing collects the flow and guides it to the top discharge flange.

The main parts include:

Pump casing
Closed or semi-open impeller
Pump cover
Shaft and shaft sleeve
Mechanical seal or packing
Bearing housing
Flexible coupling
Coupling guard
Electric motor
Steel baseplate

This layout keeps the pump stable during continuous service. Moreover, the separate bearing housing supports the shaft and helps control vibration.

HJ Centrifugal Chemical Pump 6.jpg

Materials for Corrosive Liquids

Different chemicals require different wetted materials. Therefore, material selection should be based on the full liquid composition, concentration, temperature, and particle content.

Available materials may include:

Carbon steel
304 or 304L stainless steel
316 or 316L stainless steel
Alloy 20
Duplex stainless steel
Monel alloy
Titanium
Other corrosion-resistant alloys

The casing, impeller, shaft, sleeve, seal faces, and gaskets should all suit the liquid. This complete approach helps reduce corrosion, swelling, wear, and early seal failure.

Mechanical Seal and Packing Options

The HJ centrifugal chemical pump can use packing or a mechanical seal. Packing is simple and works well in selected general duties. However, a mechanical seal provides better leakage control for many chemical processes.

Single and double mechanical seal arrangements can be supplied according to the medium. In addition, seal face materials such as silicon carbide, carbon, tungsten carbide, and ceramic may be selected.

For toxic, flammable, or crystallizing liquids, the seal system requires a detailed review. Flushing, cooling, or an external seal-support system may also be added when required.

HJ Centrifugal Chemical Pump 7.jpg

Explosion-Proof Motor Configuration

The pump in the photos uses an explosion-proof motor. This option is suitable for plants where flammable gas or vapor may be present.

Motor voltage, frequency, efficiency class, protection grade, and hazardous-area rating can be matched to the project. Furthermore, a variable-frequency drive can be used when the process needs adjustable flow or pressure.

The motor power must include enough margin for the actual liquid density. A dense chemical requires more shaft power than clean water at the same duty point.

Main Product Benefits

Wide flow and head range
Strong horizontal pump structure
Good resistance to chemical corrosion
Several metal material options
Packing and mechanical seal choices
Standard or explosion-proof motor
Stable performance during continuous duty
Easy access to common service parts
Custom flange and motor standards
Suitable for many industrial liquids

Chemical Pump Applications

The HJ pump is used in many process industries, including:

Chemical and fine chemical production
Oil refining and petrochemical plants
Pharmaceutical manufacturing
Pesticide and fertilizer production
Metal pickling and electroplating
Paper and pulp processing
Steel and non-ferrous metal plants
Power station water systems
Waste acid and wastewater treatment
Solvent and alcohol transfer
Food and sugar processing
Industrial water treatment

Selected configurations may handle liquids with fine solids. However, particle size, hardness, and concentration must be checked before selection. Highly abrasive slurry may require a dedicated slurry pump.

Installation and Operation

Install the pump on a level and rigid foundation. Meanwhile, support the inlet and outlet pipes separately so that pipe weight does not load the pump casing.

The suction pipe should be short, direct, and airtight. Before startup, fill the pump and suction line with liquid because the HJ pump is not self-priming.

Operators should also:

Check the motor rotation
Confirm coupling alignment
Open the suction valve fully
Vent trapped air from the casing
Never operate the pump dry
Avoid long operation with a closed discharge valve
Monitor vibration, seal leakage, and bearing temperature
Keep the pump close to its selected duty point

HJ Centrifugal Chemical Pump 8.jpg

Custom Manufacturing Service

We provide pump selection, material matching, seal design, motor configuration, assembly, testing, and export packing. Custom flange standards, base dimensions, coatings, and monitoring devices are also available.

For accurate selection, please provide:

Liquid name and composition
Concentration and temperature
Density and viscosity
Particle size and solid content
Required flow and head
Suction pressure or tank level
Motor voltage and frequency
Hazardous-area requirements
Required seal type
Daily operating hours

With complete process data, we can recommend a suitable HJ centrifugal chemical pump for safe and reliable service.

Frequently Asked Questions

Can the HJ pump transfer strong acids?

Yes, if the wetted material and seal are compatible with the acid, concentration, and temperature.

Is the pump self-priming?

No. The casing and suction line must be filled before startup.

Can it handle liquids containing solids?

Selected models can handle fine particles. However, the particle size, hardness, and concentration require review.

Can an explosion-proof motor be supplied?

Yes. The motor can be selected according to the required voltage, frequency, protection level, and hazardous-area rating.

Request an HJ Chemical Pump Quotation

Send us your process data and required duty point. Our team will recommend the pump size, material, seal, motor, and accessories for your chemical transfer system.