Editorial Technical Reference

Pneumatic Valves

This page explains how Pneumatic Valves is classified within Motor Vehicle Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Control devices that regulate compressed air flow in tire pressure management systems

Product Specifications

Technical details and manufacturing context for Pneumatic Valves

Definition
Pneumatic valves are critical components within tire pressure control systems that manage the flow of compressed air to inflate, deflate, or maintain optimal pressure in vehicle tires. These valves operate using compressed air as the working medium and are designed to withstand the harsh environmental conditions and vibration typical in automotive applications. They are typically installed in the air lines between the compressor, reservoir, and tire inflation points, and are actuated by electrical signals from a central control unit. The valves are available in configurations that support different port sizes, flow capacities, and response times, allowing them to be matched to the specific requirements of the vehicle's tire system. Common body materials include brass, stainless steel, and engineering plastics, with seals made of synthetic rubber to ensure reliable operation across a wide temperature range. The operating pressure range is typically 1.0 to 1.6 MPa, with flow capacities (Cv) ranging from 0.5 to 2.5, and response times between 10 and 50 milliseconds. Leakage rates are kept below 0.1 L/min to prevent pressure loss, and the valves are rated for ingress protection from IP65 to IP67. Supply voltage is typically 12 to 24 V DC, with power consumption between 2 and 8 watts. Port sizes range from 1/8 to 1/2 inch, and the weight varies from 0.3 to 1.5 kg. These valves are designed for use in motor vehicle manufacturing, where they contribute to safety and efficiency by enabling precise tire pressure management. It is essential to verify model-specific values and standards with the legal manufacturer or supplier, as the listed parameters are reference ranges for typical applications and may vary depending on the exact valve model and vehicle system.
Working Principle
Pneumatic valves operate by using compressed air pressure to actuate internal mechanisms (such as spools, poppets, or diaphragms) that open or close flow paths. In tire pressure control systems, they typically receive electrical signals from the control unit that trigger pneumatic actuation, allowing precise control of air flow to individual tires for pressure adjustment. The valve's internal design determines its flow capacity, response time, and leakage characteristics, which are critical for maintaining accurate tire pressure under varying load and temperature conditions.
Common Materials
Brass, Stainless Steel, Engineering Plastics, Synthetic Rubber
Technical Parameters
ParameterTypical rangeNotes & selection driver
Flow Capacity (Cv)0.5–2.5 CvHigher Cv for larger tire systems
Response Time10–50 msFaster response for precise pressure control
Leakage Rate≤0.1 L/minExcessive leakage causes pressure lossISO 5208
Operating Temperature-40–85 °COutside range seals may fail
Supply Voltage12–24 V DCCommon in automotive systems
Power Consumption2–8 WLower power for energy efficiency
Ingress ProtectionIP65–IP67Protects against dust and waterIEC 60529
Body MaterialAluminum/Stainless SteelStainless steel for corrosive environments
Weight0.3–1.5 kgLighter for easier installation
Port Size1/8–1/2 inchMatch to air line diameterISO 7-1

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 containing all internal components and providing connection ports
    Material: Brass or Stainless Steel
  • Solenoid Coil
    Electromagnetic component that converts electrical signals into mechanical movement
    Material: Copper Wire with Epoxy Encapsulation
  • Spool/Poppet Part
    Moving element that opens or closes air flow paths
    Material: Stainless Steel or Engineering Plastic
  • Seals Part
    Prevent air leakage between moving parts and housing
    Material: Nitrile Rubber or Fluorocarbon
  • Spring Part
    Returns valve to default position when de-energized
    Material: Stainless Steel

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 150 psi (10 bar)
flow rate: 0.5 to 50 SCFM
temperature: -20°C to 80°C
response time: 10 to 100 ms
Media Compatibility
✓ Compressed Air ✓ Inert Gases (N2, CO2) ✓ Dry Process Gases
Unsuitable: Corrosive or Particulate-Laden Environments
Sizing Data Required
  • Required Flow Rate (SCFM)
  • System Operating Pressure (psi)
  • Valve Response Time (ms)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Sticking or binding
Cause: Contaminant buildup (dust, oil, particulates) in the valve body or actuator, leading to increased friction and restricted movement.
Internal leakage
Cause: Worn or damaged seals (O-rings, gaskets) due to aging, chemical incompatibility, or excessive operating pressure/temperature.
Maintenance Indicators
  • Audible hissing or air leakage from valve body or fittings during operation
  • Slow or erratic valve actuation (delayed response, incomplete opening/closing)
Engineering Tips
  • Implement regular air filtration maintenance: Use high-quality coalescing filters and dryers to remove moisture, oil, and particulates from compressed air supply.
  • Establish a preventive maintenance schedule for seal inspection/replacement based on operating hours or cycles, using manufacturer-recommended materials compatible with process media.

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 5599-1: Pneumatic fluid power - Five-port directional control valves - Part 1: Mounting interface surfaces without electrical connector ANSI/FCI 70-2: Control Valve Seat Leakage DIN 24340: Hydraulic fluid power - Directional control valves - Mounting surfaces

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: +/-0.02mm
  • Surface flatness: 0.05mm per 100mm
Quality Inspection
  • Pressure decay leak test
  • Flow capacity and pressure drop test
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
Check the legal entity, factory address, ownership, certifications, and direct contacts.

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Manufacturers of Pneumatic Valves

12 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.

AKS Pneumatic Components Co., Ltd.
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Pneumatic Valves”
View source page ↗ aks-pneumatic.com · recorded 2026-08-28
DELCO Valve
Dongguan, Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Pneumatic Valves”
View source page ↗ delcofluid.com · recorded 2026-09-10
GEYA
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “pneumatic control valves”
View source page ↗ pneumaticmfg.com · recorded 2026-08-28
GIM FLUID Equipment (Shanghai) Co., Ltd.
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Pneumatic Control Valves”
View source page ↗ gimfluid.com · recorded 2026-08-30
Hankun Fluid
Beijing, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Pneumatic Valves”
View source page ↗ hankunfluid.com · recorded 2026-09-08
HEBAI
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Pneumatic Control Valves >”
View source page ↗ hebaiele.com · recorded 2026-08-22
Hydrorelax Bathroom industry manufacturer
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Spa Air Control & Valves”
View source page ↗ hydrorelax.com · recorded 2026-08-31
Jiangxi YiKai Electric Co., LTD
Jiangxi, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Pneumatic Valves”
View source page ↗ cnecan.com · recorded 2026-08-29
Jingyan Hydraulics
Beijing, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Pneumatic Valves”
View source page ↗ jingyanhydraulics.com · recorded 2026-08-22
Pneuflex Pneumatic Co., Ltd.
Ningbo, Zhejiang, CN
Also makes: Quick Coupler
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Pneumatic Valves”
View source page ↗ pneuflex-fittings.com · recorded 2026-08-28
POV
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Pneumatic control valves”
View source page ↗ pov-valve.com · recorded 2026-09-14
QEEHUA
Dongguan, Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Motorized & Pneumatic Valves”
View source page ↗ qeehuaplastic.com · recorded 2026-09-16
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Frequently Asked Questions

What is the typical operating pressure range for these pneumatic valves?

The typical operating pressure range is 1.0 to 1.6 MPa, as listed in the reference data. However, the exact range depends on the specific valve model and application. Always verify with the manufacturer.

What materials are commonly used for the valve body and seals?

Common body materials include brass, stainless steel, and engineering plastics. Seals are typically made of synthetic rubber. The choice of material affects corrosion resistance and suitability for different environments.

How do I select the correct port size for my system?

Port sizes range from 1/8 to 1/2 inch. The correct size depends on the air line diameter and the required flow capacity. Match the port size to the existing air line to ensure proper connection and performance.

What is the significance of the leakage rate specification?

The leakage rate is specified as ≤0.1 L/min. Excessive leakage can cause pressure loss and affect tire pressure accuracy. This value is a reference; verify the actual leakage rate for the specific valve model with the manufacturer.

Related equipment

Applied To / Applications

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

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Pneumatic Valves.

Data Basis

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

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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