INDUSTRY COMPONENT

Port Fittings

Port fittings are precision connectors used in vacuum manifolds to ensure leak-tight seals and proper fluid or gas flow in industrial vacuum systems.

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Component Specifications

Definition
Port fittings are specialized mechanical connectors designed for vacuum manifold applications, providing secure attachment points for hoses, pipes, or other components in vacuum systems. They maintain system integrity by preventing air ingress and ensuring consistent pressure levels, crucial for processes requiring controlled environments. These fittings typically feature standardized thread patterns and sealing surfaces compatible with vacuum-grade components.
Working Principle
Port fittings create a mechanical seal between the vacuum manifold and connected components using precision-machined surfaces and sealing elements (such as O-rings or gaskets). When tightened, they compress the sealing material against mating surfaces, eliminating gaps that could compromise vacuum integrity. The design minimizes dead volume and turbulence to maintain efficient flow characteristics within the system.
Materials
Stainless steel (typically 304 or 316 grade), aluminum alloys, or brass; sealing elements made from fluorocarbon elastomers (Viton), silicone, or ethylene propylene diene monomer (EPDM) for compatibility with vacuum conditions and process media.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Size RangeDN 10 to DN 100 (or 1/4" to 4" NPT equivalent)
Surface FinishRa ≤ 0.8 μm for sealing surfaces
Connection TypeThreaded (NPT, BSP, ISO-KF), Flanged (CF, ISO)
Pressure RatingHigh vacuum to 10^-9 mbar
Temperature Range-20°C to 150°C (dependent on sealing material)

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 2861, DIN 28403, ISO 1609

Parent Products

This component is used in the following industrial products

Vacuum Manifold

A distribution component that connects multiple vacuum ports to a central vacuum source in a vacuum table system.

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Water Inlet/Outlet Manifolds

Distribution components that manage water flow into and out of a water-cooled copper mold's cooling channels.

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Control Valve Manifold

A multi-port valve assembly that directs and regulates fluid flow within a leak testing system.

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Engineering Analysis

Risks & Mitigation
  • Leakage due to improper installation
  • Material incompatibility with process media
  • Thread damage during assembly
FMEA Triads
Trigger: Insufficient torque during installation
Failure: Vacuum leak leading to system pressure rise
Mitigation: Use calibrated torque wrenches and follow manufacturer specifications; implement leak testing procedures
Trigger: Chemical degradation of sealing materials
Failure: Loss of sealing integrity over time
Mitigation: Select chemically compatible materials; establish regular inspection and replacement schedules

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.1 mm on critical dimensions, surface flatness within 0.05 mm
Test Method
Helium leak detection per ASTM E493, pressure decay testing

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

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.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Port Fittings

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Ningbo Huaping Intelligent Control Technology Co., Ltd.
Zhejiang, CN
Also makes: Pressure Regulator, Check Valves, Check Valve and 2 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Union Port Fittings”
View source page ↗ hpmetalwork.com · recorded 2026-08-27
View profile Send enquiry

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What are the most common types of port fittings for vacuum manifolds?

The most common types are ISO-KF (quick flange) fittings for smaller systems, CF (ConFlat) flanges for ultra-high vacuum applications, and threaded fittings (NPT/BSP) for general industrial use.

How do I select the right sealing material for vacuum port fittings?

Select based on vacuum level, temperature range, and chemical compatibility. Viton is common for high vacuum and moderate temperatures, silicone for wider temperature ranges, and metal gaskets (copper or aluminum) for ultra-high vacuum applications.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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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