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Hydraulically (Hydro) Formed Bellows – ASA Flanged (Fixed)

Hydroformed Bellows – ASA Flanged (Rotatable)

TFM specializes in the fabrication of ASA flanged formed bellows designed for high voltage (HV) systems. These bellows are constructed using 300 series stainless steel flexible hoses combined with 304L stainless steel ASA flanges. ASA flanges serve as efficient vacuum seals for HV applications, featuring one grooved flange that accommodates an O-ring and a corresponding smooth (flat) mating flange.

Features of Hydroformed Bellows – ASA Flanged (Rotatable)

  • Durable Flexibility: Our bellows are designed to endure numerous flexing cycles without cracking, ensuring long-term reliability in demanding environments.
  • Leak-Free Design: The seam-welded construction effectively eliminates virtual leaks typically associated with lap-welded seams, providing a dependable seal.
  • Versatile Flange Configuration: Each assembly includes one rotatable and one fixed ASA flange, available in various combinations of flat and grooved styles to meet specific application requirements.
  • Dynamic Hose Flexibility: Unbraided flexible hoses can extend up to 10% beyond their live length and compress by up to 15%, accommodating movement without compromising performance.
  • Protective Braiding: The braided flexible hoses are equipped with a protective sheath that helps shield the convoluted hose from damage, enhancing durability and extending service life.

At TFM, we are committed to delivering high-quality solutions tailored to the unique demands of HV systems, ensuring optimal performance and reliability.

Ordering Table

Drawing FlangeSize BellowsID FreeLength ASASize ASAType Part Number
Tooltip 4.25 1 4 1 Grooved Rotatable Flange AFB04X010G1R
Tooltip 4.25 1 4 1 Grooved Fixed Flange AFB04X010G2R
Tooltip 4.25 1 4 1 Both Flanges Grooved AFB04X010GBR
Tooltip 4.25 1 4 1 Flat Flanges AFB04X010R
Tooltip 4.25 1.5 4 1 Grooved Rotatable Flange AFB04X015G1R
Tooltip 4.25 1.5 4 1 Grooved Fixed Flange AFB04X015G2R
Tooltip 4.25 1.5 4 1 Both Flanges Grooved AFB04X015GBR
Tooltip 4.25 1.5 4 1 Flat Flanges AFB04X015R
Tooltip 5 2 4 1.50 Grooved Rotatable Flange AFB05X020G1R
Tooltip 5 2 4 1.50 Grooved Fixed Flange AFB05X020G2R
Tooltip 5 2 4 1.50 Both Flanges Grooved AFB05X020GBR
Tooltip 5 2 4 1.50 Flat Flanges AFB05X020R
Tooltip 5 2.5 6 1.50 Grooved Rotatable Flange AFB05X025G1R
Tooltip 5 2.5 6 1.50 Grooved Fixed Flange AFB05X025G2R
Tooltip 5 2.5 6 1.50 Both Flanges Grooved AFB05X025GBR
Tooltip 5 2.5 6 1.50 Flat Flanges AFB05X025R
Tooltip 6 3 6 2 Grooved Rotatable Flange AFB06X030G1R
Tooltip 6 3 6 2 Grooved Fixed Flange AFB06X030G2R
Tooltip 6 3 6 2 Both Flanges Grooved AFB06X030GBR
Tooltip 6 3 6 2 Flat Flanges AFB06X030R
Tooltip 7.5 4 6 3 Grooved Fixed Flange AFB07X040G2R
Tooltip 7.5 4 6 3 Both Flanges Grooved AFB07X040GBR
Tooltip 7.5 4 6 3 Flat Flanges AFB07X040R
Tooltip 9 4 6 4 Grooved Fixed Flange AFB09X040G2R
Tooltip 9 4 6 4 Both Flanges Grooved AFB09X040GBR
Tooltip 9 4 6 4 Flat Flanges AFB09X040R
Tooltip 9 6 8 4 Grooved Rotatable Flange AFB09X060G1R
Tooltip 9 6 8 4 Grooved Fixed Flange AFB09X060G2R
Tooltip 9 6 8 4 Both Flanges Grooved AFB09X060GBR
Tooltip 9 6 8 4 Flat Flanges AFB09X060R
Tooltip 11 6 8 6 Grooved Rotatable Flange AFB11X060G1R
Tooltip 11 6 8 6 Grooved Fixed Flange AFB11X060G2R
Tooltip 11 6 8 6 Both Flanges Grooved AFB11X060GBR
Tooltip 11 6 8 6 Flat Flanges AFB11X060R

 

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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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