Editorial Technical Reference

Metering Valve

This page explains how Metering Valve is classified within Chemical 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 valve designed to accurately control and measure the flow rate of oxidants within a dispensing system.

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

Product Specifications

Technical details and manufacturing context for Metering Valve

Definition
A metering valve is a critical component of an oxidant dispenser that precisely regulates the volume or flow rate of oxidant materials (such as oxygen, chlorine, or other oxidizing agents) delivered to a process. It ensures accurate dosing for chemical reactions, sterilization, bleaching, or other industrial applications where controlled oxidant addition is essential. The valve operates by adjusting an orifice or needle mechanism to create a precise, repeatable restriction in the flow path. Manual, pneumatic, or electric actuators position the valve stem to modulate the opening, allowing fine control over the oxidant flow rate based on system requirements. Typical materials of construction include stainless steel, PTFE, and Hastelloy, selected for corrosion resistance and chemical compatibility with oxidants. Key parameters include nominal diameter (DN15–DN50), flow coefficient (Cv 0.1–10), flow accuracy (±0.5%), repeatability (±0.1%), operating pressure (1.0–1.6 MPa), operating temperature (-20–80 °C), control signal (4–20 mA), supply voltage (24 V DC ±10%), ingress protection (IP65), body material (316L stainless steel), seal material (PTFE), and weight (2.5–8 kg). These values are reference ranges and must be verified for the specific model and application. The valve is designed for use in chemical manufacturing environments where precise oxidant dosing is required. It is not a standalone device but a component of a larger dispensing system. The valve's performance is influenced by upstream pressure, downstream conditions, and the physical properties of the oxidant. Proper selection requires consideration of flow capacity, pressure drop, and compatibility with the process media. The valve is not intended for use with non-oxidizing fluids unless specifically designed for such service. Maintenance includes regular inspection of seals and moving parts, and replacement of worn components. Failure to maintain the valve can lead to inaccurate dosing, leakage, or system downtime. The valve should be installed and operated according to the manufacturer's instructions and applicable standards. Always verify model-specific values and standards with the legal manufacturer or supplier before procurement.
Working Principle
The metering valve regulates oxidant flow by adjusting a needle or orifice within the flow path. An actuator (manual, pneumatic, or electric) positions the valve stem, changing the size of the opening. This creates a precise restriction that controls the flow rate. The valve's design allows for fine adjustments, enabling accurate dosing. The flow coefficient (Cv) indicates the valve's capacity at a given opening. The valve operates within specified pressure and temperature ranges, and its performance is affected by the fluid's properties. The control signal (4–20 mA) provides feedback for automated systems. The valve's repeatability ensures consistent performance under the same conditions. The valve is designed for oxidant service, with materials selected for corrosion resistance. Proper installation and calibration are essential for accurate flow control.
Common Materials
Stainless Steel, PTFE (Polytetrafluoroethylene), Hastelloy
Technical Parameters
ParameterTypical rangeNotes & selection driver
Nominal DiameterDN15–DN50 mmSelect based on required flow capacityISO 6708
Flow Coefficient0.1–10 CvDetermines pressure drop at given flowIEC 60534-2-1
Flow Accuracy±0.5 %Under steady-state conditionsISO 10791-7
Repeatability±0.1 %For same setpoint and conditionsISO 10791-7
Operating Pressure1.0–1.6 MPaBelow 1.0 MPa seat load insufficient
Operating Temperature-20–80 °CSeal material limits range
Control Signal4–20 mAStandard analog inputIEC 60947-5-6
Supply Voltage24 ±10% V DCFor actuator and electronicsIEC 61131-2
Ingress ProtectionIP65Dust-tight and water-jet protectedIEC 60529
Body Material316L SSCorrosion-resistant for oxidantsASTM A182
Seal MaterialPTFEChemical compatibilityASTM D4894
Weight2.5–8 kgDepends on size and actuator

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
  • Valve Body
    Main housing that contains fluid passage and provides connection points
    Material: Stainless Steel
  • Stem and Needle Part
    Precision component that moves to adjust orifice opening for flow control
    Material: Stainless Steel
  • Seals and Gaskets Part
    Prevent leakage between moving parts and connections
    Material: PTFE or Viton
  • Actuator
    Mechanism (manual, pneumatic, electric) that positions the stem for flow adjustment
    Material: Aluminum or Stainless Steel

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: 0 to 100 bar (max operating)
flow rate: 0.1 to 100 L/min (calibrated range)
temperature: -20°C to 150°C
slurry concentration: Up to 20% solids by weight (non-abrasive)
Media Compatibility
✓ Oxygen gas (medical grade) ✓ Nitrogen gas (industrial purity) ✓ Hydrogen peroxide solutions (aqueous, <30%)
Unsuitable: Hydrofluoric acid or halogenated solvents (causes material degradation)
Sizing Data Required
  • Required flow rate accuracy (±% of reading)
  • System operating pressure (bar)
  • Media viscosity and density at operating conditions

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Internal leakage due to seat wear
Cause: Abrasive particles in the fluid eroding the valve seat surface over time, compromising sealing integrity
Sticking or binding of the metering mechanism
Cause: Corrosion or contamination buildup on the precision sliding surfaces, often from improper fluid filtration or incompatible materials
Maintenance Indicators
  • Audible hissing or whistling during operation indicating internal leakage past the seat
  • Visible fluid seepage around the valve stem or body connections during normal operation
Engineering Tips
  • Install upstream filtration (minimum 10 micron) to remove abrasive particles and maintain fluid cleanliness
  • Implement regular calibration checks using flow measurement equipment to detect early performance degradation before complete failure

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
ISO 5208:2015 (Industrial valves - Pressure testing of valves) ANSI/FCI 70-2-2013 (Control valve seat leakage) DIN EN 1349:2009 (Industrial valves - Metallic valves for general purposes)

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: +/-0.01mm
  • Seat flatness: 0.05mm
Quality Inspection
  • Helium leak test for seat tightness
  • Dimensional verification with CMM (Coordinate Measuring Machine)

Manufacturers of Metering Valve

3 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.

AVM Extraordinary Intelligent Control (Zhejiang) Co., Ltd.
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Fitok Group
Beijing, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Hikelok
Chengdu, Sichuan, CN
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
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CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

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Frequently Asked Questions

What is the typical flow accuracy of this metering valve?

The flow accuracy is ±0.5% under steady-state conditions, as listed in the reference parameters. However, actual accuracy may vary depending on installation, fluid properties, and operating conditions. Always verify with the manufacturer for your specific application.

What materials are available for the valve body and seals?

The valve body is typically made of 316L stainless steel, and seals are made of PTFE. Other materials like Hastelloy may be available for specific corrosive applications. Confirm material compatibility with your oxidant and process conditions.

What is the operating pressure and temperature range?

The reference operating pressure range is 1.0–1.6 MPa, and the temperature range is -20 to 80 °C. These are general ranges; the actual limits depend on the valve size, actuator, and seal materials. Check the manufacturer's data sheet for your model.

How is the valve controlled?

The valve can be controlled manually, pneumatically, or electrically. For automated systems, a standard 4–20 mA control signal is used. The supply voltage for the actuator and electronics is 24 V DC ±10%. Ensure your control system is compatible.

Data Basis

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

Preliminary Technical Classification
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