Structured Manufacturing Data (2026)

Delivery Valve

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Delivery Valve used in the Motor Vehicle Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Delivery Valve is characterized by the integration of Valve Plunger and Valve Seat. In industrial production environments, manufacturers listed on CNFX commonly emphasize Alloy Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A precision valve component within a fuel injection pump that controls the release of pressurized fuel to the injectors.

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Product Specifications

Technical details and manufacturing context for Delivery Valve

Definition
The delivery valve is a critical component of a diesel fuel injection pump, located between the high-pressure pump chamber and the fuel injection line. Its primary function is to precisely control the timing and quantity of fuel delivered to the injectors, prevent fuel backflow from the injection line into the pump chamber, and ensure a sharp cut-off of fuel delivery to eliminate post-injection dripping.
Working Principle
The valve operates on a spring-loaded plunger principle. During the pump's delivery stroke, fuel pressure overcomes the spring force, lifting the valve off its seat and allowing fuel to flow into the injection line. At the end of the stroke, the spring forces the valve to close rapidly, creating a pressure drop in the line that ensures a clean injection cut-off and prevents secondary injections.
Common Materials
Alloy Steel, Stainless Steel
Technical Parameters
  • Valve seat diameter, critical for flow capacity and sealing (mm) Per Request
Components / BOM
  • Valve Plunger Part
    Moves to open and close the fuel passage
    Material: Hardened Alloy Steel
  • Valve Seat Part
    Provides sealing surface for the plunger
    Material: Stainless Steel
  • Return Spring Part
    Forces the plunger back to closed position
    Material: Spring Steel
  • Valve Body/Housing Part
    Contains and aligns all internal components
    Material: Steel Alloy

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Delivery Valve.

Fuel Delivery Valve Injection Valve fuel injection pump delivery valve motor vehicle fuel delivery valve alloy steel delivery valve precision fuel valve component stainless steel valve plunger

Applied To / Applications

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

Fuel Injection Pump
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 2000 bar
flow rate: 0.5 to 10 L/min
temperature: -40°C to +150°C
slurry concentration: Not applicable (clean fuel only)
Media Compatibility
✓ Diesel fuel ✓ Biodiesel blends (B20 max) ✓ Kerosene-based fuels
Unsuitable: High-water-content fuels or corrosive chemicals
Sizing Data Required
  • Required fuel flow rate (L/min)
  • System operating pressure (bar)
  • Injector nozzle specification/type

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Cavitation damage
Cause: Pressure drop below fluid vapor pressure causing vapor bubble formation and implosion, leading to pitting and material loss on valve surfaces
Seat wear and leakage
Cause: Abrasive particles in fluid stream, improper seating alignment, or excessive cycling leading to degradation of sealing surfaces
Maintenance Indicators
  • Unusual high-frequency vibration or audible knocking sounds during operation
  • Visible external leakage at valve body connections or abnormal pressure fluctuations downstream
Engineering Tips
  • Implement proper upstream filtration and maintain fluid cleanliness to prevent abrasive wear and particle contamination
  • Ensure correct installation alignment and follow manufacturer's torque specifications for all connections to prevent stress-induced failures

Compliance & Manufacturing Standards

Reference Standards
ISO 5208: Industrial valves - Pressure testing of valves ANSI/ASME B16.34: Valves - Flanged, Threaded, and Welding End DIN EN 12266-1: Industrial valves - Testing of metallic valves
Manufacturing Precision
  • Bore diameter: +/-0.05mm
  • Seat flatness: 0.08mm maximum deviation
Quality Inspection
  • Hydrostatic pressure test
  • Leakage test with helium mass spectrometry

Factories Producing Delivery Valve

Manufacturer profiles with relevant production capability in China

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

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the function of a delivery valve in motor vehicle fuel systems?

The delivery valve precisely controls the release of pressurized fuel from the injection pump to the injectors, ensuring accurate fuel metering and timing for optimal engine performance.

What materials are used in high-quality delivery valves?

Premium delivery valves are manufactured from alloy steel and stainless steel components to withstand high-pressure fuel environments, resist corrosion, and maintain dimensional stability under extreme operating conditions.

What are the key components in a delivery valve assembly?

A complete delivery valve assembly includes a valve body/housing, valve plunger, valve seat, and return spring, all engineered to work together for precise fuel control in motor vehicle injection systems.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Motor Vehicle Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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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