INDUSTRY COMPONENT

Spool/Shuttle

A precision-machined spool or shuttle component that controls airflow direction and flow rate in pneumatic valves.

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Component Specifications

Definition
The spool/shuttle is a cylindrical or sliding component within an air valve that moves axially to open, close, or redirect airflow passages. It features precisely machined lands and grooves that align with valve ports to control pneumatic circuit functions. This component is critical for converting electrical or mechanical input signals into controlled pneumatic output.
Working Principle
The spool/shuttle operates on the sliding principle: when actuated (by solenoid, manual lever, or pilot pressure), it moves within a valve bore, aligning its grooves with inlet, outlet, and exhaust ports. This movement either connects or blocks airflow paths, enabling functions like directional control, flow regulation, or pressure switching. Sealing is achieved through tight tolerances, O-rings, or lapped metal-to-metal surfaces.
Materials
Typically carbon steel (AISI 1018/1045), stainless steel (303/304/316), aluminum alloys (6061-T6), or engineered plastics (POM, PTFE, PEEK). Hardness: 45-60 HRC for steel, anodized or coated for corrosion resistance.
Technical Parameters
  • Stroke 5mm to 30mm
  • Diameter 6mm to 50mm
  • Tolerance H7/g6 fit
  • Leakage Rate <0.1 mL/min at 0.5 MPa
  • Surface Finish Ra 0.4 μm or better
  • Temperature Range -10°C to 80°C
  • Operating Pressure 0.15 to 1.0 MPa
Standards
ISO 5599-1, DIN 24340, ISO 15407-1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Spool/Shuttle.

air valve spool pneumatic shuttle valve valve spool component spool valve parts industrial valve components ISO 5599 spool Spool/Shuttle Spool/Shuttle in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Air Valve (Spool/Shuttle)

A directional control valve that regulates airflow in pneumatic systems by shifting a spool or shuttle mechanism.

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Engineering Analysis

Risks & Mitigation
  • Mechanical wear leading to leakage
  • Contamination causing jamming
  • Corrosion in humid environments
  • Improper installation causing misalignment
FMEA Triads
Trigger: Abrasive particles in airflow
Failure: Increased leakage due to worn sealing surfaces
Mitigation: Install 5-micron filters upstream; use hardened or coated spools; implement preventive maintenance schedules.
Trigger: Moisture condensation in valve body
Failure: Corrosion and sticking of spool
Mitigation: Use air dryers; specify corrosion-resistant materials (stainless steel); apply protective coatings.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Dimensional tolerances per ISO 286, leakage rates per ISO 19973-1
Test Method
Flow testing per ISO 6358, pressure decay testing, cycle life testing per ISO 19973-3

Buyer Feedback

★★★★☆ 4.9 / 5.0 (31 reviews)

"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Spool/Shuttle so far."

"Testing the Spool/Shuttle now; the technical reliability results are within 1% of the laboratory datasheet."

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

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Frequently Asked Questions

What causes spool/shuttle sticking in air valves?

Sticking is typically caused by contamination (dust, oil residue), corrosion due to moisture, inadequate lubrication, or wear from misalignment. Regular maintenance using filtered, dry air and proper lubricants prevents this.

How do I select the right spool material for my application?

Choose carbon steel for general industrial use, stainless steel for corrosive environments, aluminum for lightweight needs, and engineered plastics for chemical resistance or low friction. Consider operating pressure, temperature, and media compatibility.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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