Editorial Technical Reference

Metering Pump

This page explains how Metering Pump is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A precision pump designed to deliver precise, controlled volumes of liquid binder in spray systems.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Metering Pump

Definition
A metering pump is a critical component within a Liquid Binder Spray System responsible for the accurate and repeatable volumetric delivery of liquid binder (e.g., adhesives, resins, coatings) to the spray nozzle. It ensures consistent application rates, which is vital for product quality, material efficiency, and process control in manufacturing operations. The pump operates by creating a fixed displacement volume per cycle (e.g., via a piston, diaphragm, or gear mechanism). A drive mechanism (often motorized) controls the stroke length and/or frequency, allowing precise adjustment of the flow rate. This enables the delivery of a specific, metered volume of binder per unit time to the spray head. Typical specifications include a flow rate range of 0.1–50 L/h, adjustable via stroke length and frequency, with an accuracy of ±0.5% and repeatability of ±0.25%. Operating pressure is 1.0–1.6 MPa, with a maximum pressure of 2.5 MPa. Fluid temperature range is 0–80°C, and ambient temperature range is -10–50°C. Power supply is 220–240 V AC (50/60 Hz, single phase), with power consumption of 90–370 W. Ingress protection is IP54–IP65 (IEC 60529). Wetted materials are typically 316L stainless steel (ASTM A240), with optional PTFE or PVDF for corrosive fluids. Weight ranges from 15–25 kg. These values are directory reference ranges and must be confirmed for the actual model and application. Always verify model-specific values and standards with the legal manufacturer or supplier.
Working Principle
The pump operates by creating a fixed displacement volume per cycle (e.g., via a piston, diaphragm, or gear mechanism). A drive mechanism (often motorized) controls the stroke length and/or frequency, allowing precise adjustment of the flow rate. This enables the delivery of a specific, metered volume of binder per unit time to the spray head.
Common Materials
Stainless Steel, PTFE (Polytetrafluoroethylene), Ceramic
Technical Parameters
ParameterTypical rangeNotes & selection driver
Flow Rate0.1–50 L/hAdjustable via stroke length and frequency
Accuracy±0.5 %Steady-state accuracy of setpoint
Repeatability±0.25 %Consistency over repeated cycles
Operating Pressure1.0–1.6 MPa
Max Pressure2.5 MPaDo not exceed for continuous operation
Fluid Temperature0–80 °CHigher temperatures may require seal upgrades
Ambient Temperature-10–50 °COutside range may affect motor performance
Power Supply220–240 V AC50/60 Hz, single phase
Power Consumption90–370 WDepends on flow and pressure
Ingress ProtectionIP54–IP65IP65 for washdown environmentsIEC 60529
Wetted Materials316LOptional PTFE or PVDF for corrosive fluidsASTM A240
Weight15–25 kgDepends on motor size and configuration

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Pump Head / Fluid Chamber
    Contains the displacement mechanism and interfaces with the fluid. Provides the sealed volume for metering.
    Material: Stainless Steel or PTFE
  • Diaphragm / Piston Part
    The moving element that creates the displacement volume within the pump head, isolating the drive mechanism from the fluid.
    Material: PTFE, Rubber, or Ceramic
  • Check Valves (Inlet & Outlet)
    One-way valves that ensure fluid flows in the correct direction during the suction and discharge strokes.
    Material: Stainless Steel, PTFE
  • Drive Mechanism (Motor & Gearbox)
    Provides the mechanical power and controls the stroke frequency and length for flow rate adjustment.
    Material: Steel, Aluminum Alloy

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10 bar
flow rate: 0.1 to 100 L/h
temperature: -10°C to 80°C
slurry concentration: Up to 60% solids by weight
Media Compatibility
✓ Water-based adhesives ✓ Polyurethane resins ✓ Epoxy binders
Unsuitable: Highly abrasive slurries with sharp particles
Sizing Data Required
  • Required flow rate (L/h)
  • System pressure (bar)
  • Media viscosity (cP)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Valve seat wear/leakage
Cause: Abrasive particles in fluid causing erosion, chemical incompatibility leading to corrosion, or improper seating pressure
Diaphragm failure
Cause: Fatigue from cyclic flexing beyond design limits, chemical attack degrading material, or over-pressurization causing rupture
Maintenance Indicators
  • Irregular or pulsing flow output (audible knocking or visible pulsation)
  • Visible fluid leakage at pump head, valve seats, or diaphragm area
Engineering Tips
  • Implement proactive fluid filtration and compatibility testing to prevent abrasive wear and chemical degradation of wetted components
  • Establish and adhere to manufacturer-recommended diaphragm inspection/replacement intervals and proper pressure calibration procedures

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ANSI/HI 7.1-7.5 (Hydraulic Institute Standards for Metering Pumps) DIN EN 12266-1 (Industrial valves - Testing of metallic valves)

Quoted from the published standard.

Manufacturing Precision
  • Flow rate accuracy: +/- 1% of set point
  • Displacement volume repeatability: +/- 0.5%
Quality Inspection
  • Hydrostatic pressure test (1.5x maximum working pressure)
  • Flow calibration verification against NIST-traceable standards

Manufacturers of Metering Pump

10 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Shanghai Watson-Marlow Fluid Technology Co. Ltd.
Taiwan, CN
Founded 1956
ISO 9001:2015 IATF 16949
Also makes: Diaphragm Valve, Industrial Pumps, Process Pump and 3 more
Listed on the company's own website · profile compiled by CNFX from public sources
Huixin Machinery
Shandong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Kosen Valve
Zhejiang, CN
Also makes: Knife Gate Valve, Plug Valve, Ball Valve and 9 more
Listed on the company's own website · profile compiled by CNFX from public sources
Newdose Pump
Beijing, CN
Listed on the company's own website · profile compiled by CNFX from public sources
QEEHUA Pump
Guangdong, CN
Also makes: Butterfly Valve, Ball Valve, Industrial Pumps and 5 more
Listed on the company's own website · profile compiled by CNFX from public sources
Shandong Lango Metering Pump Tech Co.,Ltd
Shandong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Shanghai Crowns Pump
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Shenzhen Asenhe Environmental
Suzhou, Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
SIKOPUMP
Shanghai, CN
Also makes: Proportioning Pumps, Process Pump, Dosing Pump and 3 more
Listed on the company's own website · profile compiled by CNFX from public sources
Xiamen Micrava Technology Co., Ltd.
Fujian, CN
Listed on the company's own website · profile compiled by CNFX from public sources
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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the flow rate range of this metering pump?

The flow rate range is 0.1–50 L/h, adjustable via stroke length and frequency. This is a directory reference; confirm the exact range for your specific model.

What is the accuracy and repeatability?

The accuracy is ±0.5% of setpoint, and repeatability is ±0.25% over repeated cycles. These values are typical and should be verified for your application.

What are the operating pressure limits?

The operating pressure is 1.0–1.6 MPa, with a maximum pressure of 2.5 MPa. Do not exceed the maximum for continuous operation.

What materials are used for wetted parts?

Wetted materials are typically 316L stainless steel (ASTM A240), with optional PTFE or PVDF for corrosive fluids. Confirm material compatibility with your fluid.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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