INDUSTRY COMPONENT

Interconnecting Piping

Interconnecting piping for vacuum pumping systems that transfers gases between components with minimal pressure loss.

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Component Specifications

Definition
A network of pipes, fittings, and connectors designed to link various components of a vacuum pumping system, including pumps, chambers, valves, and gauges. These pipes maintain vacuum integrity while allowing efficient gas flow between system elements, with specialized designs to minimize conductance losses and prevent contamination.
Working Principle
Operates by creating sealed pathways for gas molecules to travel between vacuum system components under pressure differentials. The piping's internal geometry and surface finish minimize flow resistance (conductance), while joints maintain hermetic seals to prevent air ingress. Gas molecules move from high-pressure areas (like process chambers) toward low-pressure areas (pump inlets) through these interconnections.
Materials
Stainless steel (304L/316L), aluminum alloys, or specialized polymers (PTFE/PFA). Stainless steel offers corrosion resistance and ultra-high vacuum compatibility; aluminum provides lightweight options; polymers handle corrosive gases. All materials feature electropolished or smooth internal surfaces to reduce outgassing and particle adhesion.
Technical Parameters
  • Diameter DN16 to DN200 (ISO)
  • Leak Rate < 1×10^-9 mbar·L/s
  • Conductance 10-1000 L/s (depending on diameter/length)
  • Wall Thickness Schedule 5S to 40S
  • Pressure Rating 10^-9 to 10^-3 mbar
  • Surface Roughness Ra ≤ 0.8 μm
Standards
ISO 1609, DIN 28400, ASME B31.3

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Interconnecting Piping.

vacuum piping interconnecting pipes vacuum system components stainless steel vacuum tubing high vacuum fittings conductance optimization leak detection Interconnecting Piping Interconnecting Piping in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Vacuum Pumping System

A system that creates and maintains the required vacuum level within a Vacuum Induction Degassing Unit by removing gases and vapors from the chamber.

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Inter-stage Transfer Pump/Piping

A system that transfers concentrated liquid between successive evaporation stages in a multi-stage vacuum evaporator train.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Leak development at joints
  • Contamination buildup
  • Vibration-induced fatigue cracks
  • Thermal expansion stress
  • Corrosion from process gases
FMEA Triads
Trigger: Improper flange alignment during installation
Failure: Vacuum leak exceeding 1×10^-8 mbar·L/s
Mitigation: Use alignment tools during assembly, perform helium leak testing after installation, implement torque-controlled tightening procedures
Trigger: Particle accumulation in low-flow sections
Failure: Reduced conductance and contamination of process chamber
Mitigation: Install inline filters, implement regular purge cycles, design piping with minimal dead volumes and smooth directional changes
Trigger: Thermal cycling between process temperatures
Failure: Stress cracking at welded joints
Mitigation: Use expansion bellows in long runs, select materials with matching thermal coefficients, implement controlled heating/cooling cycles

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.1 mm on diameter, ±0.05° on angular alignment of flanges, surface roughness within ±10% of specified Ra value
Test Method
Helium mass spectrometer leak detection per ISO 1609, pressure decay testing, visual inspection with borescopes, conductance measurement using gas flow methods

Buyer Feedback

★★★★☆ 4.9 / 5.0 (18 reviews)

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"The technical documentation for this Interconnecting Piping is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Interconnecting Piping so far."

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Frequently Asked Questions

What materials are best for corrosive gas applications in vacuum piping?

PTFE-lined stainless steel or pure PTFE/PFA piping provides excellent chemical resistance while maintaining vacuum integrity, with electropolished 316L stainless steel as an alternative for moderate corrosion environments.

How does pipe diameter affect vacuum system performance?

Larger diameters increase conductance (gas flow capacity), reducing pumping time and pressure differentials, but require more space and higher cost. Optimal diameter balances conductance needs with system constraints.

What maintenance is required for vacuum interconnecting pipes?

Regular leak testing using helium mass spectrometry, internal cleaning to remove contaminants, inspection of seals/flanges, and monitoring for vibration-induced stress at connection points.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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