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GB Series Mechanical Diaphragm Metering Pump

Flow Rate350–2000 L/h
Max Pressure1.0 MPa
Power0.75 / 1.1 / 1.5 KW
Stroke Speed140–180 spm
Diaphragm Size114 / 150 / 160 / 180 mm
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Product Details

Product Overview

The GB Series is an extra high flow mechanical diaphragm metering pump designed for large-scale industrial chemical dosing. With flow rates up to 2000 L/h and a robust PTFE diaphragm with dual-diaphragm rupture detection, it delivers safe and reliable performance for demanding high-volume applications.

Features

  1. High-strength PTFE diaphragm with excellent corrosion resistance and long service life, suitable for various corrosive and hazardous fluids.
  2. Dual-diaphragm design with rupture detection for safe handling of flammable, explosive, toxic, radioactive, irritant, and highly corrosive liquids.
  3. High-precision one-way check valve structure with accurate metering, compact design, excellent sealing, long life, high interchangeability, low cost, and easy installation.
  4. Motor mounted vertically above the gearbox to effectively prevent lubricant leakage and improve transmission reliability.
  5. Compatible with VFD motor receiving 4–20mA signal for flow adjustment. Supports digital metering pump controller or stroke controller for external automatic control.
  6. Oil-lubricated transmission mechanism — only requires periodic oil changes, no dedicated lubrication system maintenance needed.
  7. Gearbox cast from high-strength aluminum alloy, lightweight yet durable.
  8. Wetted parts available in PVC, PVDF, PTFE, 304/316 stainless steel, with custom special materials available for corrosive and non-corrosive fluids.

Applications

Widely used in petroleum, chemical, oil refining, power generation, food processing, environmental protection, mining, water treatment, textile, plastic foaming, papermaking, pharmaceutical, defense, and scientific research institutions.

Technical Specifications

ModelFlow Rate (L/h)Pressure (MPa)Port SizeStroke Speed (spm)Power (KW)Diaphragm (mm)Weight (KG)
GB-350/1.03501.0DN251400.7511442
GB-460/0.84600.8140114
GB-580/0.75800.7140114
GB-650/0.76500.7140114
GB-1000/0.410000.41801.1150
GB-1200/0.412000.4180150
GB-1400/0.314000.3DN40180160
GB-1600/0.316000.3180160
GB-1800/0.318000.31801.5180
GB-2000/0.320000.3180180


Specifications

Flow Rate350–2000 L/h
Max Pressure1.0 MPa
Power0.75 / 1.1 / 1.5 KW
Stroke Speed140–180 spm
Diaphragm Size114 / 150 / 160 / 180 mm
Weight42 KG
Port ConnectionDN25 / DN40
Wetted MaterialsPVC / PVDF / PTFE / 304 / 316 SS
Gearbox MaterialHigh-Strength Aluminum Alloy

Features

PTFE Diaphragm

High-strength PTFE diaphragm with excellent corrosion resistance and long service life, suitable for hazardous and corrosive fluids.

Dual-Diaphragm Safety

Dual-diaphragm design with rupture detection for safe handling of flammable, explosive, toxic, radioactive, and highly corrosive liquids.

High-Precision Check Valve

Precision check valve structure with accurate metering, compact design, excellent sealing, long life, and high interchangeability.

VFD Compatible

Supports VFD motor with 4–20mA signal for flow adjustment; compatible with digital controller or stroke controller for external automatic control.

Leak-Proof Gearbox

Motor mounted vertically above the gearbox to effectively prevent lubricant leakage and improve transmission reliability.

Wide Application Range

Widely used in petroleum, chemical, water treatment, food, pharmaceutical, power, environmental protection, mining, textile, papermaking, defense, and research institutions.

Frequently Asked Questions

What is a GB Series Mechanical Diaphragm Metering Pump and where is it commonly used?

The GB Series Mechanical Diaphragm Metering Pump is a precision fluid delivery system designed for accurate and reliable metering of various liquids, including corrosive, viscous, and sensitive chemicals. It is commonly used in water treatment, chemical processing, pharmaceutical manufacturing, food and beverage processing, and other industrial applications where precise chemical dosing is critical for process efficiency and safety.

How does the GB Series Mechanical Diaphragm Metering Pump ensure accurate dosing?

The GB Series Mechanical Diaphragm Metering Pump ensures accurate dosing through its design that features a mechanical diaphragm actuation, which provides a precise, repeatable stroke volume. The pump's adjustable stroke length and frequency allow for fine-tuning the flow rate, and the use of high-quality components and materials minimizes wear and tear, maintaining calibration and reliability over time. Additionally, the pump can be equipped with advanced control systems and sensors to monitor and adjust dosing in real-time, further enhancing accuracy.

What are the key advantages of using a GB Series Mechanical Diaphragm Metering Pump?

The key advantages of the GB Series Mechanical Diaphragm Metering Pump include high accuracy and repeatability in dosing, capable of handling a wide range of fluids from watery solutions to highly viscous materials and corrosive chemicals. It offers excellent chemical resistance due to the diaphragm seal, minimizing the risk of leaks and contamination. The pump also features easy maintenance, with replaceable wetted parts, and can operate at various pressures, making it suitable for different industrial applications.

Can the GB Series Mechanical Diaphragm Metering Pump handle hazardous chemicals?

Yes, the GB Series Mechanical Diaphragm Metering Pump is designed to handle hazardous chemicals effectively. Its mechanical diaphragm design and use of chemically resistant materials ensure that the pump can meter corrosive, toxic, and flammable liquids safely and reliably. The pump's sealed fluid path minimizes the risk of leaks, and it can be configured with additional safety features such as leak detection and fail-safe mechanisms to ensure safe operation in critical environments.

What type of maintenance does the GB Series Mechanical Diaphragm Metering Pump require?

The GB Series Mechanical Diaphragm Metering Pump requires regular maintenance to ensure optimal performance and longevity. This typically includes periodic inspection and replacement of the diaphragm and other wetted parts, lubrication of mechanical components, and cleaning of the pump and fluid lines. It is recommended to follow the manufacturer’s maintenance schedule and guidelines to prevent wear and ensure the pump operates efficiently. Regular maintenance also helps in identifying and addressing potential issues before they become critical.