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ASA HV 5-Way Crosses (grooved flanges)

ASA HV 5-Way Crosses (grooved flanges): Five-Directional Vacuum Distribution with All-Grooved ASA Flanges

ASA HV 5-Way Crosses (grooved flanges) from TFM are engineered for advanced high-vacuum (HV) systems that demand reliable, multi-directional connectivity. Constructed from 304L stainless steel tubing for strength and corrosion resistance, each cross features five orthogonally arranged ports, all equipped with rotatable grooved ASA flanges—ready to accept elastomeric o-rings and mate with flat ASA flanges for secure vacuum sealing.

Designed around the sexed ASA sealing system, this component simplifies the process of distributing vacuum access points from a central junction while maintaining consistent sealing geometry. Whether used for diagnostics, gas injection, chamber extensions, or pumping lines, these crosses enable robust and leak-tight performance across a variety of vacuum system architectures.

Key Features of ASA HV 5-Way Crosses (grooved flanges):

  • 304L Stainless Steel Construction
    Provides excellent chemical compatibility, mechanical integrity, and vacuum cleanliness, suitable for harsh process environments and pressures down to 10⁻⁸ Torr.

  • Five-Port Configuration
    Delivers efficient spatial access in multiple directions, ideal for applications where standard 4-way crosses are insufficient.

  • All Grooved ASA Flanges
    Each port includes a rotatable grooved flange, designed to seat an o-ring and mate with a flat ASA flange. This uniform flange design streamlines integration into vacuum networks that rely on flat-to-groove sealing.

  • Rotatable Flange Design
    Ensures easy alignment and flexibility during installation, accommodating complex layout requirements.

  • Vacuum-Grade Clean and Tested
    Every ASA HV 5-Way Cross (grooved flanges) is helium leak tested and cleaned to meet high-vacuum service standards.

  • Standard Sizes and Customization Available
    TFM offers common ASA sizes such as 4″, 6″, 8″, 10″, and 12″, with the option for custom tube lengths, reducer configurations, and non-standard flange arrangements upon request.

Typical Applications:

  • Vacuum chamber manifolds with diagnostic or utility ports

  • Gas distribution nodes with five-point delivery

  • Multi-directional pumping, sensing, or venting junctions

  • Modular high-vacuum architectures in R&D platforms

  • Cleanroom-compatible vacuum system expansion

To complete your system build, TFM provides ASA flat flanges, FKM and Buna-N o-rings, bolt kits, blanking plates, and custom transition adapters, ensuring full integration and long-term performance.


In summary, ASA HV 5-Way Crosses (grooved flanges) offer a robust and scalable solution for distributing vacuum access across five ports with consistent, grooved-side sealing. Their stainless steel durability, rotatable flange design, and vacuum compatibility make them an ideal choice for sophisticated HV system configurations.

Ordering Table

Flange Size/OD Drawing Nominal Tube OD Dim A Part Number
ASA 1 (4.25" OD) Tooltip 1-1/2 2.5 AF5C04X15GCR
ASA 1.5 (5.00" OD) Tooltip 2 2.5 AF5C05X20GCR
ASA 1.5 (5.00" OD) Tooltip 2-1/2 2.5 AF5C05X25GCR
ASA 2 (6.00" OD) Tooltip 3 3.5 AF5C06X30GCR
ASA 3 (7.50" OD) Tooltip 4 5.12 AF5C07X40GCR
ASA 4 (9.00" OD) Tooltip 4 5.12 AF5C09X40GCR
ASA 4 (9.00" OD) Tooltip 6 5.25 AF5C09X60GCR
ASA 6 (11.00" OD) Tooltip 6 5.38 AF5C11X60GCR
ASA 6 (11.00" OD) Tooltip 8 7.38 AF5C11X80GCR
ASA 8 (13.50" OD) Tooltip 10 9.88 AF5C13X10GCR
ASA 8 (13.50" OD) Tooltip 8 7.38 AF5C13X80GCR
ASA 10 (16.00" OD) Tooltip 10 9.88 AF5C16X10GCR

FAQ

Tube fittings are designed for tubes (measured by outside diameter and wall thickness) used in high-pressure and instrumentation applications, whereas pipe fittings are for pipes (identified by nominal pipe size) primarily used in fluid transport.

 

Common valve types include ball valves, gate valves, check valves, butterfly valves, and globe valves. Each serves a specific function—from quick shutoff (ball/gate valves) to flow regulation (globe valves).

 
  • For tubing, measure the outside diameter; for pipes, refer to the nominal pipe size (using conversion charts if needed). Always match the valve or fitting size to your pipe’s dimensions and flow requirements.

  • Frequently used thread types include NPT (National Pipe Tapered), BSP (British Standard Pipe), and UNC, along with slip-fit options that rely on compression or fusion rather than threads.

Interchangeability depends on manufacturer specifications and certification. Always verify compatibility via manufacturer guides or certified interchangeability charts.

 
  • A coupling is a short, straight fitting used to join two pipes or tubes. It provides a secure, leak-tight connection and can sometimes serve to extend or repair piping runs.

Consider valve type, pressure and temperature ratings, material compatibility with your fluid, actuation method (manual or automatic), and maintenance requirements.

 
  • Valves regulate flow by opening, closing, or partially obstructing the pathway. Their mechanisms (such as the rotation of a ball or the linear movement of a gate) determine the speed and precision of flow control.

  • A flange is a flat, circular component used to connect pipes, valves, or other equipment. Bolted together with gaskets, flanges provide a secure, leak-proof joint that facilitates both assembly and maintenance.

  • Manual valves require physical operation via handles or levers, whereas actuated valves use mechanisms—pneumatic, electric, or hydraulic—to open and close automatically or remotely.

  • Issues include leaks caused by improper installation, over-tightening, degraded seals, material incompatibility, and fatigue from repeated cycling. Regular inspection and proper installation practices help mitigate these problems.

Regular maintenance involves periodic inspections, cleaning or replacing worn seals, ensuring proper torque during installation, and adhering to manufacturer guidelines and local plumbing codes to preserve system integrity.

 

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