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ASA HV Miter 90° Elbows (Grooved & Flat Flanges)

ASA HV Miter 90° Elbows (Grooved & Flat Flanges): Right-Angle Routing with Reliable ASA Vacuum Sealing

ASA HV Miter 90° Elbows (Grooved & Flat Flanges) from TFM are precision-engineered components designed for high-vacuum (HV) systems requiring a 90-degree redirection of vacuum flow. Manufactured from high-grade 304L stainless steel tubing, these elbows are fabricated in a mitered configuration, which provides a compact right-angle geometry with minimal footprint and clean internal transitions.

Each elbow is equipped with rotatable ASA flanges, with a combination of grooved and flat sealing faces. This sexed flange system supports the use of standard elastomeric o-rings, offering secure, repeatable sealing when grooved and flat flanges are bolted together.

Key Features of ASA HV Miter 90° Elbows (Grooved & Flat Flanges):

  • 304L Stainless Steel Construction
    Ensures long-lasting performance, vacuum compatibility, and resistance to corrosion in chemically reactive or high-temperature environments.

  • Mitered 90° Geometry
    Offers a space-efficient right-angle turn, ideal for vacuum routing in compact chambers or confined mechanical layouts.

  • Rotatable ASA Flanges (Grooved & Flat)
    Each port features a rotatable flange, available in one grooved and one flat configuration, enabling secure o-ring sealing in line with ASA vacuum standards.

  • Vacuum Performance
    When assembled with a matching grooved-to-flat ASA flange and o-ring, these elbows provide leak-tight sealing down to 10⁻⁸ Torr, ensuring stability across demanding HV applications.

  • Custom and Standard Sizes
    Available in common ASA sizes such as 4″, 6″, 8″, 10″, and 12″, with options for custom tube lengths, wall thicknesses, or flange pairings upon request.

Applications:

  • Right-angle transitions in vacuum chamber plumbing

  • Space-constrained vacuum manifolds or pump lines

  • Gas inlet/exhaust redirection for HV systems

  • Chamber-to-pump connections with directional change

  • Modular infrastructure in analytical or deposition systems

TFM also provides all supporting components for full system integration, including ASA o-rings (FKM, Buna-N), bolt kits, blank flanges, and ASA-to-ISO adapters.


In summary, ASA HV Miter 90° Elbows (Grooved & Flat Flanges) offer a compact, reliable, and vacuum-tight solution for redirection in ASA-flanged systems. With robust stainless steel construction and standard sealing compatibility, they ensure flexibility and performance in a wide range of HV configurations.

Ordering Table

Flange Size/OD Type Drawing Nominal Tube OD Dim A Part Number
ASA 1 (4.25" OD) Fixed Tooltip 1-1/2 3.25 AFEM04X15G
ASA 1 (4.25" OD) Rotatable Tooltip 1-1/2 3.25 AFEM04X15GR
ASA 1.5 (5.00" OD) Fixed Tooltip 1-1/2 3.25 AFEM05X15G
ASA 1.5 (5.00" OD) Rotatable Tooltip 1-1/2 3.25 AFEM05X15GR
ASA 1.5 (5.00" OD) Fixed Tooltip 2-1/2 3.25 AFEM05X25G
ASA 1.5 (5.00" OD) Rotatable Tooltip 2-1/2 3.25 AFEM05X25GR
ASA 2 (6.00" OD) Fixed Tooltip 3 5.12 AFEM06X30G
ASA 2 (6.00" OD) Rotatable Tooltip 3 5.12 AFEM06X30GR
ASA 3 (7.50" OD) Fixed Tooltip 3 5.12 AFEM07X30G
ASA 3 (7.50" OD) Rotatable Tooltip 3 5.12 AFEM07X30GR
ASA 3 (7.50" OD) Fixed Tooltip 4 5.12 AFEM07X40G
ASA 3 (7.50" OD) Rotatable Tooltip 4 5.12 AFEM07X40GR
ASA 4 (9.00" OD) Fixed Tooltip 4 5.12 AFEM09X40G
ASA 4 (9.00" OD) Rotatable Tooltip 4 5.12 AFEM09X40GR
ASA 4 (9.00" OD) Fixed Tooltip 6 5.25 AFEM09X60G
ASA 4 (9.00" OD) Rotatable Tooltip 6 5.25 AFEM09X60GR
ASA 6 (11.00" OD) Fixed Tooltip 6 6.44 AFEM11X60G
ASA 6 (11.00" OD) Rotatable Tooltip 6 6.44 AFEM11X60GR
ASA 6 (11.00" OD) Fixed Tooltip 8 7.38 AFEM11X80G
ASA 6 (11.00" OD) Rotatable Tooltip 8 7.38 AFEM11X80GR
ASA 8 (13.50" OD) Fixed Tooltip 10 9.88 AFEM13X10G
ASA 8 (13.50" OD) Rotatable Tooltip 10 9.88 AFEM13X10GR
ASA 8 (13.50" OD) Fixed Tooltip 8 7.75 AFEM13X80G
ASA 8 (13.50" OD) Rotatable Tooltip 8 7.75 AFEM13X80GR
ASA 10 (16.00" OD) Fixed Tooltip 10 9.88 AFEM16X10G
ASA 10 (16.00" OD) Rotatable Tooltip 10 9.88 AFEM16X10GR

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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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