Industry-Verified Manufacturing Data (2026)

Delivery Valve

Based on aggregated insights from multiple verified 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
    Moves to open and close the fuel passage
    Material: Hardened Alloy Steel
  • Valve Seat
    Provides sealing surface for the plunger
    Material: Stainless Steel
  • Return Spring
    Forces the plunger back to closed position
    Material: Spring Steel
  • Valve Body/Housing
    Contains and aligns all internal components
    Material: Steel Alloy
Engineering Reasoning
150-2000 bar
Exceeds 2200 bar or drops below 100 bar
Design Rationale: Cavitation erosion at pressures below 100 bar due to vapor bubble collapse on valve surfaces; plastic deformation above 2200 bar exceeding yield strength of hardened steel (typically 1600 MPa)
Risk Mitigation (FMEA)
Trigger Fuel contamination with particulate matter exceeding 5 μm
Mode: Sealing surface abrasion leading to 15% fuel leakage
Strategy: Install 2 μm absolute filtration with differential pressure monitoring at pump inlet
Trigger Cyclic thermal stress from 20-120°C temperature fluctuations at 2 Hz frequency
Mode: Thermal fatigue cracking in valve seat after 10^7 cycles
Strategy: Implement nickel-based superalloy (Inconel 718) valve seat with coefficient of thermal expansion 13.0 μm/m·°C

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
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Industrial Ecosystem & Supply Chain DNA

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

Verified manufacturers with capability to produce this product in China

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✓ 95% Supplier Capability Match Found

S Sourcing Manager from Brazil Feb 21, 2026
★★★★★
"Standard OEM quality for Motor Vehicle Manufacturing applications. The Delivery Valve arrived with full certification."
Technical Specifications Verified
P Procurement Specialist from Canada Feb 18, 2026
★★★★☆
"Great transparency on the Delivery Valve components. Essential for our Motor Vehicle Manufacturing supply chain. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from United States Feb 15, 2026
★★★★★
"The Delivery Valve we sourced perfectly fits our Motor Vehicle Manufacturing production line requirements."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

19 sourcing managers are analyzing this specification now. Last inquiry for Delivery Valve from Mexico (59m ago).

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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 Specifications verified by CNFX Industrial Index (v2.6.03) for Motor Vehicle Manufacturing sector.

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