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ASA HV 4-Way Crosses (grooved & flat flanges)

TFM fabricates these ASA crosses using 304L stainless steel tubing along with ASA flanges. Specifically designed for high vacuum (HV) applications, ASA flanges serve as straightforward, sexed vacuum seals—one flange is grooved to hold an o-ring, while the other mating flange is smooth (flat).

Features of ASA Crosses:

  • Durable Construction: Made from high-quality 304L stainless steel for exceptional strength and longevity.
  • Rotatable Flanges: Each axis includes one rotatable flange, which can be configured in various combinations of flat and grooved.
  • Size Adaptability: Reducer crosses are available to accommodate two different flange sizes.
  • Custom Options: Common lengths and tube diameters are listed; feel free to contact us with your specific requirements for tailored solutions.

Ordering Table

Flange Size/OD Drawing Nominal Tube OD Grooved Flanges Dim A Part Number
ASA 1 (4.25" OD) Tooltip 1-1/2 Flange 1 2.5 AF4C04X15G1R
ASA 1 (4.25" OD) Tooltip 1-1/2 Flanges 1 & 2 2.5 AF4C04X15G2R
ASA 1 (4.25" OD) Tooltip 1-1/2 Flanges 1 & 3 2.5 AF4C04X15G3R
ASA 1 (4.25" OD) Tooltip 1-1/2 Flanges 1, 2 & 3 2.5 AF4C04X15G4R
ASA 1.5 (5.00" OD) Tooltip 2 Flange 1 3.25 AF4C05X20G1R
ASA 1.5 (5.00" OD) Tooltip 2 Flanges 1 & 2 3.25 AF4C05X20G2R
ASA 1.5 (5.00" OD) Tooltip 2 Flanges 1 & 3 3.25 AF4C05X20G3R
ASA 1.5 (5.00" OD) Tooltip 2 Flanges 1, 2 & 3 3.25 AF4C05X20G4R
ASA 1.5 (5.00" OD) Tooltip 2-1/2 Flange 1 3.25 AF4C05X25G1R
ASA 1.5 (5.00" OD) Tooltip 2-1/2 Flanges 1 & 2 3.25 AF4C05X25G2R
ASA 1.5 (5.00" OD) Tooltip 2-1/2 Flanges 1 & 3 3.25 AF4C05X25G3R
ASA 1.5 (5.00" OD) Tooltip 2-1/2 Flanges 1, 2 & 3 3.25 AF4C05X25G4R
ASA 2 (6.00" OD) Tooltip 3 Flange 1 3.5 AF4C06X30G1R
ASA 2 (6.00" OD) Tooltip 3 Flanges 1 & 2 3.5 AF4C06X30G2R
ASA 2 (6.00" OD) Tooltip 3 Flanges 1 & 3 3.5 AF4C06X30G3R
ASA 2 (6.00" OD) Tooltip 3 Flanges 1, 2 & 3 3.5 AF4C06X30G4R
ASA 3 (7.50" OD) Tooltip 4 Flange 1 5.12 AF4C07X40G1R
ASA 3 (7.50" OD) Tooltip 4 Flanges 1 & 2 5.12 AF4C07X40G2R
ASA 3 (7.50" OD) Tooltip 4 Flanges 1 & 3 5.12 AF4C07X40G3R
ASA 3 (7.50" OD) Tooltip 4 Flanges 1, 2 & 3 5.12 AF4C07X40G4R
ASA 4 (9.00" OD) Tooltip 4 Flange 1 5.12 AF4C09X40G1R
ASA 4 (9.00" OD) Tooltip 4 Flanges 1 & 2 5.12 AF4C09X40G2R
ASA 4 (9.00" OD) Tooltip 4 Flanges 1 & 3 5.12 AF4C09X40G3R
ASA 4 (9.00" OD) Tooltip 4 Flanges 1, 2 & 3 5.12 AF4C09X40G4R
ASA 4 (9.00" OD) Tooltip 6 Flange 1 5.25 AF4C09X60G1R
ASA 4 (9.00" OD) Tooltip 6 Flanges 1 & 2 5.25 AF4C09X60G2R
ASA 4 (9.00" OD) Tooltip 6 Flanges 1 & 3 5.25 AF4C09X60G3R
ASA 4 (9.00" OD) Tooltip 6 Flanges 1, 2 & 3 5.25 AF4C09X60G4R
ASA 6 (11.00" OD) Tooltip 6 Flange 1 6.44 AF4C11X60G1R
ASA 6 (11.00" OD) Tooltip 6 Flanges 1 & 2 6.44 AF4C11X60G2R
ASA 6 (11.00" OD) Tooltip 6 Flanges 1 & 3 6.44 AF4C11X60G3R
ASA 6 (11.00" OD) Tooltip 6 Flanges 1, 2 & 3 6.44 AF4C11X60G4R
ASA 6 (11.00" OD) Tooltip 8 Flange 1 7.38 AF4C11X80G1R
ASA 6 (11.00" OD) Tooltip 8 Flanges 1 & 2 7.38 AF4C11X80G2R
ASA 6 (11.00" OD) Tooltip 8 Flanges 1 & 3 7.38 AF4C11X80G3R
ASA 6 (11.00" OD) Tooltip 8 Flanges 1, 2 & 3 7.38 AF4C11X80G4R
ASA 8 (13.50" OD) Tooltip 10 Flange 1 9.88 AF4C13X10G1R
ASA 8 (13.50" OD) Tooltip 10 Flanges 1 & 2 9.88 AF4C13X10G2R
ASA 8 (13.50" OD) Tooltip 10 Flanges 1 & 3 9.88 AF4C13X10G3R
ASA 8 (13.50" OD) Tooltip 10 Flanges 1, 2 & 3 9.88 AF4C13X10G4R
ASA 8 (13.50" OD) Tooltip 8 Flange 1 7.75 AF4C13X80G1R
ASA 8 (13.50" OD) Tooltip 8 Flanges 1 & 2 7.75 AF4C13X80G2R
ASA 8 (13.50" OD) Tooltip 8 Flanges 1 & 3 7.75 AF4C13X80G3R
ASA 8 (13.50" OD) Tooltip 8 Flanges 1, 2 & 3 7.75 AF4C13X80G4R
ASA 10 (16.00" OD) Tooltip 10 Flange 1 9.88 AF4C16X10G1R
ASA 10 (16.00" OD) Tooltip 10 Flanges 1 & 2 9.88 AF4C16X10G2R
ASA 10 (16.00" OD) Tooltip 10 Flanges 1 & 3 9.88 AF4C16X10G3R
ASA 10 (16.00" OD) Tooltip 10 Flanges 1, 2 & 3 9.88 AF4C16X10G4R

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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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