Product Introduction

The GB Diaphragm Metering Pump is a high-precision chemical dosing and fluid transfer pump designed for safe, accurate, and reliable handling of corrosive, abrasive, and hazardous liquids. Ideal for industrial, water treatment, chemical, pharmaceutical, and environmental applications, the GB pump combines robust construction, precise flow control, and long-term durability, making it a preferred choice in critical dosing processes.

The pump features a diaphragm-based design, which ensures leak-free operation, reducing risks associated with hazardous fluids. Constructed with 316L stainless steel, PTFE, PVDF, and chemically resistant polymers, the GB Diaphragm Metering Pump handles strong acids, alkalis, solvents, and other aggressive chemicals with excellent corrosion resistance.

With adjustable stroke length, variable speed drive, and precise control mechanisms, this pump offers accurate flow rates ranging from milliliters per hour to hundreds of liters per hour, making it suitable for both small-scale laboratory dosing and large-scale industrial applications. Its modular design allows for easy installation, inspection, and maintenance, minimizing operational downtime and ensuring consistent process performance.

The GB Diaphragm Metering Pump is compatible with automation systems, PLC controls, and remote monitoring, enabling high-accuracy dosing and integration into complex industrial processes. Whether used in water treatment, chemical processing, or laboratory environments, it delivers reliable, leak-free, and efficient fluid handling.

Key Features

1. Leak-Free Diaphragm Design

• Flexible diaphragm ensures complete isolation of fluid from mechanical components.

• Ideal for hazardous, toxic, or corrosive chemicals.

2. High-Precision Flow Control

• Adjustable stroke length allows fine-tuning of flow rates.

• Capable of accurate dosing from 0.1 L/h to 500 L/h.

3. Robust Construction

• Wetted parts in 316L stainless steel, PVDF, PTFE, or PFA.

• Resistant to corrosion, abrasion, and chemical attack.

4. High-Pressure Capability

• Standard operating pressure up to 16 bar, with high-pressure variants available.

5. Variable Flow Rate

• Manual stroke adjustment or electronic stroke controller.

• Compatible with VFDs for precise speed and dosing control.

6. Wide Chemical Compatibility

• Handles acids, alkalis, chlorine, oxidizers, solvents, and aggressive chemicals.

7. Automation Integration

• Supports remote control, PLC, SCADA, and digital feedback systems.

• Optional analog or digital input/output signals for precise process control.

8. Modular and Compact Design

• Facilitates easy installation, maintenance, and retrofitting.

• Compact footprint ideal for laboratory, skid-mounted, or inline installations.

9. Safety and Compliance

• CE, ISO 9001, ATEX, IECEx certified options available.

• Suitable for hazardous environments and critical dosing applications.

10. Energy Efficiency

• Optimized hydraulic and mechanical design reduces energy consumption and operational costs.

Technical Specifications (Product Parameters)

Applications of GB Diaphragm Metering Pump

1. Water Treatment

• Precise dosing of chlorine, sodium hypochlorite, flocculants, antiscalants, and acids.

• Ensures efficient disinfection, chemical treatment, and pH control.

2. Chemical Industry

• Dosing of acids, alkalis, oxidizers, and solvents for chemical processes.

• Ideal for continuous, batch, or pilot-scale chemical dosing.

3. Petrochemical and Oil & Gas

• Transfers corrosion inhibitors, demulsifiers, and scale inhibitors.

• Suitable for onshore and offshore chemical injection.

4. Pharmaceutical Industry

• Precise dosing of liquid reagents, active ingredients, and solvents.

• Compatible with GMP-compliant production lines.

5. Food and Beverage

• Handles flavors, additives, colors, and preservatives safely.

• Materials comply with FDA and hygiene standards.

6. Environmental Applications

• Dosing for wastewater treatment, effluent neutralization, and flocculation.

• Seal-less diaphragm design prevents chemical leakage and environmental hazards.

7. Laboratory and Pilot Plant

• Provides precise low-volume dosing for research, testing, and small-scale processes.

8. Industrial Process Automation

• Integrated with PLC or SCADA systems for automated chemical dosing and process control.

9. Mining and Power Plants

• Dosing of flocculants, antiscalants, corrosion inhibitors, and treatment chemicals in cooling towers, boilers, and wastewater treatment.

Operating Instructions

Pre-Start Checks

• Ensure proper pump mounting and motor alignment.

• Confirm pump wetted parts and diaphragm integrity.

• Verify fluid compatibility with diaphragm and pump materials.

• Check electrical supply, control systems, and automation signals.

Start-Up Procedure

1. Prime pump to eliminate air pockets in suction line.

2. Start motor gradually to prevent hydraulic shock.

3. Adjust stroke length or speed to achieve the desired flow.

4. Monitor pressure, flow rate, and diaphragm movement.

Normal Operation

• Maintain flow rate and pressure within operational limits.

• Inspect diaphragm and pump head periodically.

• Ensure consistent chemical compatibility with wetted materials.

Shutdown Procedure

• Gradually reduce pump speed.

• Flush pump with compatible solvent or water to clean internal components.

• Inspect diaphragm and pump head for wear or damage.

Maintenance Guidelines

1. Visual Inspection

• Check pump head, diaphragm, valves, and connections regularly.

2. Diaphragm Replacement

• Replace diaphragm if worn, cracked, or showing chemical degradation.

• Typical replacement interval depends on fluid type and operating conditions.

3. Valve Maintenance

• Inspect inlet/outlet valves for deposits, corrosion, or wear.

• Clean or replace valves to maintain precise dosing.

4. Drive System Maintenance

• Inspect motor, coupling, and gearbox (if applicable).

• Lubricate according to manufacturer recommendations.

5. Flushing and Cleaning

• Flush pump thoroughly after handling aggressive, viscous, or hazardous fluids.

6. Periodic Overhaul

• Recommended every 6–12 months, depending on operating intensity.

• Inspect and replace diaphragm, valves, seals, and other critical components.

Common Problems and Solutions

Advantages of GB Diaphragm Metering Pump

1. Leak-Free Operation – Diaphragm isolates fluid from mechanical components.

2. High Chemical Resistance – PTFE, PVDF, and stainless steel handle aggressive chemicals.

3. Precision Dosing – Adjustable stroke length ensures accurate volumetric flow.

4. Versatile Applications – Water treatment, chemical, pharmaceutical, and industrial uses.

5. Low Maintenance – Durable diaphragms and valves reduce downtime.

6. Modular and Compact Design – Facilitates installation and service.

7. Automation Ready – Supports PLC, SCADA, and digital control systems.

8. Safety and Compliance – ATEX, CE, ISO, and IECEx certified for hazardous environments.

9. Energy Efficiency – Optimized mechanical design reduces power consumption.

The GB Diaphragm Metering Pump provides accurate, reliable, and leak-free fluid dosing across a wide range of industrial applications, from water treatment and chemical processing to pharmaceuticals and food production. With robust construction, modular design, automation compatibility, and international compliance, it ensures safe and efficient chemical handling, delivering long-term operational reliability and performance.