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ASA HV 6-Way Crosses (flat flanges)

ASA HV 6-Way Crosses (flat flanges)

ASA HV 6-Way Crosses (flat flanges): Six-Way Vacuum Distribution with Flat ASA Flange Interfaces

ASA HV 6-Way Crosses (flat flanges) from TFM are engineered to provide high-performance, multidirectional vacuum connectivity in systems that utilize grooved ASA flanges with o-rings for sealing. Constructed entirely from 304L stainless steel tubing, these crosses feature rotatable flat ASA flanges on all six ports—allowing them to pair precisely with grooved ASA flanges for effective sexed vacuum sealing.

The design conforms to the ASA sealing principle, where the o-ring is seated in a groove on the mating flange, and the flat flange provides uniform compression during bolt-tightening. This configuration is widely used in high-vacuum (HV) systems for its mechanical simplicity, reliability, and ease of maintenance.

Key Features of ASA HV 6-Way Crosses (flat flanges):

  • All-Flat ASA Flange Configuration
    Each of the six axes features a rotatable flat ASA flange, ideal for sealing against grooved flanges with installed o-rings. This setup supports easy integration into existing ASA-based systems.

  • 304L Stainless Steel Construction
    Provides high corrosion resistance, mechanical strength, and vacuum cleanliness—suitable for pressures down to 10⁻⁸ Torr and compatible with process gases and thermal cycling.

  • Rotatable Flange Design for Installation Flexibility
    The rotatable flanges simplify component orientation during assembly, reducing mechanical stress and alignment complexity in complex vacuum builds.

  • Clean and Leak-Tested for HV Service
    Every ASA HV 6-Way Cross (flat flanges) is helium leak-tested and vacuum-cleaned to ensure optimal performance with minimal outgassing.

  • Available in Standard and Custom Sizes
    Offered in standard ASA diameters such as 4″, 6″, 8″, 10″, and 12″, with support for custom tube lengths, reducer configurations, or alternative flange interfaces upon request.

Typical Applications:

  • Connection hubs in large vacuum chambers

  • Foreline or exhaust distribution junctions

  • System expansions using grooved ASA-compatible flanges

  • Modular vacuum architecture with uniform flat-port requirements

  • R&D platforms with custom vacuum line routing

TFM also offers a complete selection of compatible components, including ASA HV grooved flanges, fluorocarbon (FKM) o-rings, bolt sets, and blank or reducer flanges, supporting full-system integration.

In summary, ASA HV 6-Way Crosses (flat flanges) deliver dependable, standardized performance in vacuum networks built around grooved o-ring-sealed ASA systems. With 304L stainless steel construction, rotatable flanges, and multi-axis access, they are a practical solution for any application requiring flat flange terminations across multiple vacuum lines.

Ordering Table

Flange Size/OD Drawing Nominal Tube OD Part Number
ASA 1 (4.25" OD) Tooltip 1-1/2 AF6C04X15R
ASA 1.5 (5.00" OD) Tooltip 2 AF6C05X20R
ASA 2 (6.00" OD) Tooltip 3 AF6C06X30R
ASA 3 (7.50" OD) Tooltip 4 AF6C07X40R
ASA 4 (9.00" OD) Tooltip 4 AF6C09X40R
ASA 4 (9.00" OD) Tooltip 6 AF6C09X60R
ASA 6 (11.00" OD) Tooltip 6 AF6C11X60R
ASA 6 (11.00" OD) Tooltip 8 AF6C11X80R
ASA 8 (13.50" OD) Tooltip 10 AF6C13X10R
ASA 8 (13.50" OD) Tooltip 8 AF6C13X80R
ASA 10 (16.00" OD) Tooltip 10 AF6C16X10R

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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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