CZ Series Standard Chemical Pump

The CZ standard chemical process pump is designed with a smooth performance curve, low cavitation requirements, and high operating efficiency. These characteristics can also remain stable under partial-load conditions when the pump is correctly selected.

Pressure around the shaft seal is balanced by auxiliary impeller vanes or balance holes in the main impeller. This design helps reduce pressure on the sealing area. Moreover, selected pump sizes use a double-volute casing to balance radial forces and support smoother operation.

The shaft diameter and bearing structure are designed to provide stable rotor support. Durable rolling bearings help carry operating loads and maintain alignment during continuous service.

Back Pull-Out Design for Easier Maintenance

The CZ pump uses a modular bearing bracket assembly. The shaft, impeller, seal chamber, and related components form a removable unit.

During maintenance, this assembly can be withdrawn without removing the pump casing from the connected pipeline. When an extended coupling is used, the motor can normally remain in place as well. Therefore, technicians can inspect the impeller, shaft, wear rings, bearings, and seal with less disruption to the production line.

This back pull-out structure can shorten service time and simplify spare-part replacement. It is especially useful in chemical plants where long shutdowns can affect the whole process.

Shaft Seal Configurations

Different liquids place different demands on the sealing system. For this reason, the CZ chemical centrifugal pump supports several shaft seal arrangements:

• Cooled or uncooled packing seal
• Single mechanical seal
• Double mechanical seal
• Balanced mechanical seal
• Seal flushing or cooling arrangement

Packing seals provide a practical option for suitable general industrial duties. However, mechanical seals are often selected when leakage control, temperature, pressure, or chemical compatibility is more important.

For hot, crystallizing, toxic, or highly corrosive media, the seal type and flushing plan should be reviewed carefully. Customers should specify the required mechanical seal when requesting a quotation.

Corrosion-Resistant Material Options

The main pump materials can be selected according to the liquid composition and service temperature. Available options may include:

• 304 and 304L stainless steel
• 316 and 316L stainless steel
• 804, 904, and 904L alloys
• Titanium and titanium alloys
• Cast iron
• Carbon steel
• 1Cr13 stainless steel
• Other compatible materials upon technical review

Material selection should not be based only on the general name of the liquid. Concentration, temperature, contaminants, pH value, and operating pressure can all change the corrosion rate.

Therefore, customers should provide a complete medium description before production. Jingjiang Xiangsu Pumps can then review the casing, impeller, shaft, wear ring, gasket, and seal materials as one complete system.

Liquids Suitable for CZ Standard Chemical Pumps

With the correct material and seal configuration, the CZ pump can be used for many industrial liquids, including:

• Sulfuric acid
• Nitric acid
• Hydrochloric acid
• Phosphoric acid
• Organic acids
• Sodium hydroxide solutions
• Sodium carbonate solutions
• Salt solutions
• Liquid petrochemical products
• Organic chemical compounds
• Neutral process liquids
• Hot or low-temperature industrial liquids

For liquids containing particles, customers should also provide the particle size, concentration, shape, and hardness. This information is necessary to evaluate wear and prevent unsuitable pump selection.

Industrial Applications

The CZ Series Standard Chemical Pump is suitable for continuous transfer, circulation, loading, unloading, and process feed duties in:

• Chemical and petrochemical plants
• Oil refineries
• Power plants
• Pulp and paper mills
• Environmental protection projects
• Sugar processing plants
• Pharmaceutical facilities
• Marine and offshore systems
• Industrial water treatment
• Storage and process tank systems

In addition, the CZ series covers the main performance range of many IH chemical pumps. Certain CZ models may serve as replacement alternatives for corresponding IH duty points. However, dimensions, flange ratings, materials, and performance should be confirmed before replacement.

Manufacturer Configuration Support

Jingjiang Xiangsu Pumps Co., Ltd. can configure the pump according to the customer’s actual operating conditions. Support may include hydraulic model selection, impeller matching, material selection, seal configuration, motor matching, base fabrication, and flange selection.

Special motors can also be considered. When required, the customer should specify the motor power, voltage, frequency, protection level, and explosion-proof classification.

For accurate selection, please provide:

• Required flow and total head
• Suction pressure or available NPSH
• Liquid name and concentration
• Density and viscosity
• Operating and maximum temperature
• Particle size and concentration
• Required pump materials
• Preferred shaft seal
• Motor voltage and frequency
• Indoor, outdoor, or hazardous-area conditions

Frequently Asked Questions

Can the CZ pump handle corrosive liquids?

Yes. It can transfer many acidic, alkaline, saline, and organic liquids when suitable materials and seals are selected.

Can it handle high-temperature media?

The documented operating range is from -80°C to +300°C. The actual limit depends on the material, seal, bearing arrangement, and process conditions.

Is a double mechanical seal available?

Yes. Single and double mechanical seal configurations are available. Balanced arrangements can also be considered.

Can the pump transfer liquids containing solids?

Selected configurations can handle liquids containing particles. However, particle size, concentration, and hardness must be reviewed before model selection.

What information is required for a quotation?

Please provide the flow, head, suction pressure, liquid properties, temperature, materials, seal type, motor data, and installation conditions.