Product Introduction

The GM Diaphragm Metering Pump is a high-precision, reliable chemical dosing and fluid transfer pump designed for accurate handling of corrosive, abrasive, and hazardous liquids. Engineered for industrial, water treatment, chemical, pharmaceutical, and environmental applications, the GM pump provides precise flow control, leak-free operation, and long-term durability, making it an ideal solution for critical dosing processes.

The pump uses a diaphragm-based design, which ensures complete isolation of the pumped fluid from mechanical components, eliminating the risk of leaks and chemical exposure. Constructed with 316L stainless steel, PTFE, PVDF, or chemically resistant polymers, the GM Diaphragm Metering Pump is capable of handling strong acids, alkalis, oxidizers, solvents, and other aggressive chemicals with exceptional reliability.

Equipped with adjustable stroke length, variable speed control, and optional electronic controllers, the GM pump achieves highly precise dosing, ranging from milliliters per hour to hundreds of liters per hour, suitable for laboratory experiments, pilot plants, and full-scale industrial processes. Its modular and compact design facilitates easy installation, maintenance, and integration into existing systems, minimizing downtime and maximizing operational efficiency.

The GM Diaphragm Metering Pump is also compatible with automation systems, PLC controls, and remote monitoring, allowing for real-time flow adjustment and process optimization. Whether applied in water treatment, chemical processing, or pharmaceutical production, the pump delivers reliable, efficient, and safe fluid handling, meeting both operational and regulatory requirements.

Key Features

1. Leak-Free Diaphragm Design

• Flexible diaphragm ensures complete isolation of fluid from pump mechanics.

• Suitable for hazardous, toxic, or corrosive chemicals.

2. High-Precision Flow Control

• Adjustable stroke length allows fine-tuning of volumetric output.

• Capable of accurate dosing from 0.1 L/h to 500 L/h, depending on model.

3. Robust Construction

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

• Resistant to corrosion, abrasion, and chemical attack.

4. High-Pressure Capability

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

5. Variable Flow Rate

• Manual or electronic stroke adjustment enables precise flow control.

• Compatible with VFDs for automated flow regulation.

6. Wide Chemical Compatibility

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

7. Automation Integration

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

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

8. Modular and Compact Design

• Facilitates easy installation, inspection, and retrofitting.

• Compact footprint suitable for laboratory, skid-mounted, or inline installation.

9. Safety and Compliance

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

• Ideal for hazardous environments and critical dosing applications.

10. Energy Efficiency

• Optimized hydraulic and mechanical design reduces power consumption.

Technical Specifications (Product Parameters)

Applications of GM Diaphragm Metering Pump

1. Water Treatment

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

• Ensures effective disinfection, pH control, and water purification.

2. Chemical Industry

• Used for precise metering of acids, bases, oxidizers, and solvents.

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

3. Petrochemical and Oil & Gas

• Transfers corrosion inhibitors, scale inhibitors, and demulsifiers.

• Optional seal-less or diaphragm isolation design reduces leakage risk.

4. Pharmaceutical Industry

• Accurate dosing of reagents, active ingredients, and solvents.

• Compatible with GMP-compliant production lines for sterile processing.

5. Food and Beverage

• Handles flavors, additives, preservatives, and coloring agents safely.

• Materials comply with FDA and hygiene standards.

6. Environmental Applications

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

• Diaphragm design prevents hazardous leakage.

7. Laboratory and Pilot Plant

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

8. Industrial Process Automation

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

9. Mining and Power Plants

• Used for dosing flocculants, antiscalants, and corrosion inhibitors in cooling towers, boilers, and wastewater systems.

Operating Instructions

Pre-Start Checks

• Confirm pump is properly mounted and aligned.

• Inspect diaphragm, valves, and wetted parts for wear or damage.

• Verify fluid compatibility with diaphragm and materials.

• Ensure correct electrical supply, drive system, and automation connections.

Start-Up Procedure

1. Prime the pump to eliminate air pockets.

2. Gradually start the drive to prevent hydraulic shock.

3. Adjust stroke length or flow rate according to process requirements.

4. Monitor pressure, flow, and diaphragm performance during operation.

Normal Operation

• Maintain flow within specified limits.

• Periodically inspect diaphragm, valves, and pump head.

• Ensure fluids are compatible with wetted materials.

Shutdown Procedure

• Reduce speed gradually before stopping.

• Flush the pump with compatible solvent or water.

• Inspect diaphragm and valves for wear and chemical damage.

Maintenance Guidelines

1. Visual Inspection

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

2. Diaphragm Replacement

• Replace diaphragm if showing wear, cracks, or chemical degradation.

3. Valve Maintenance

• Inspect inlet and outlet valves for deposits or damage.

• Clean or replace valves to maintain dosing accuracy.

4. Drive System Maintenance

• Inspect motor, coupling, and gearbox.

• Lubricate bearings as recommended by manufacturer.

5. Flushing and Cleaning

• Flush pump after handling aggressive or viscous fluids.

6. Periodic Overhaul

• Inspect critical components every 6–12 months depending on usage.

Common Problems and Solutions

Advantages of GM Diaphragm Metering Pump

1. Leak-Free Design – Diaphragm ensures safe fluid isolation.

2. Chemical Resistant Materials – Stainless steel, PTFE, PVDF handle aggressive chemicals.

3. Precision Dosing – Adjustable stroke for accurate volumetric control.

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

5. Low Maintenance – Durable diaphragm and valves minimize downtime.

6. Modular Construction – Facilitates installation and service.

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

8. Compliance & Safety – ATEX, CE, ISO, IECEx certified for hazardous areas.

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

The GM Diaphragm Metering Pump is a robust, precise, and reliable solution for chemical dosing, ensuring safe, leak-free, and efficient fluid transfer in a wide range of industrial, pharmaceutical, water treatment, and environmental applications. Its modular design, automation readiness, and compliance with international standards make it an ideal choice for long-term operational reliability and high-precision chemical metering.