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Hydraulically (Hydro) Formed Bellows – ConFlat (CF) UHV Flanged (Thin Unbraided Wall)

CF Flanged Formed Bellows for HV Systems

At TFM, we manufacture CF flanged formed bellows specifically designed for high-vacuum (HV) systems. These bellows are constructed using flexible hoses made from 300 series stainless steel, paired with durable CF flanges made from 304L stainless steel.

Hydroformed Bellows with CF UHV Flanges (Thin Unbraided Wall)

Our MH-Series bellows, made through a hydraulic (hydro) forming process, offer a range of unique features that enhance their durability and flexibility for various applications:

Key Features:

  • Thin 300 Series Stainless Steel Construction: These bellows are made from thin-walled 300 series stainless steel, ensuring they can withstand numerous flexing cycles without compromising their integrity.
  • Unbraided Flexible Hoses: Designed to extend up to 10% beyond their standard length and compress up to 15%, these hoses provide excellent flexibility and adaptability in tight spaces.
  • Braided Flexible Hoses: For additional protection, braided hoses are equipped with a braided sheath, safeguarding the convoluted hose from potential damage in demanding environments.
  • Short Flexible Hoses: Ideal for correcting minor misalignments between components, these shorter hoses provide a simple solution for system adjustments.
  • Longer Flexible Hoses: Typically used in roughing lines, longer hoses offer greater reach and flexibility for more extensive system setups.

TFM offers a wide range of flexible, durable CF flanged bellows that can meet the rigorous demands of high-vacuum environments.

Ordering Table

Drawing FlangeSize Length WallThickness Part Number VacuCADSM
Tooltip 1-1/3" 3 0.006 MHT-CF-A03 N/A
Tooltip 1-1/3" 6 0.006 MHT-CF-A06 N/A
Tooltip 1-1/3" 10 0.006 MHT-CF-A10 N/A
Tooltip 1-1/3" 12 0.006 MHT-CF-A12 N/A
Tooltip 1-1/3" 18 0.006 MHT-CF-A18 N/A
Tooltip 1-1/3" 20 0.006 MHT-CF-A20 N/A
Tooltip 1-1/3" 24 0.006 MHT-CF-A24 N/A
Tooltip 1-1/3" 30 0.006 MHT-CF-A30 N/A
Tooltip 1-1/3" 36 0.006 MHT-CF-A36 N/A
Tooltip 2-1/8" 6 0.006 MHT-CF-B06 N/A
Tooltip 2-3/4" 3 0.006 MHT-CF-C03 N/A
Tooltip 2-3/4" 6 0.006 MHT-CF-C06 N/A
Tooltip 2-3/4" 10 0.006 MHT-CF-C10 N/A
Tooltip 2-3/4" 12 0.006 MHT-CF-C12 N/A
Tooltip 2-3/4" 18 0.006 MHT-CF-C18 N/A
Tooltip 2-3/4" 20 0.006 MHT-CF-C20 N/A
Tooltip 2-3/4" 24 0.006 MHT-CF-C24 N/A
Tooltip 2-3/4" 30 0.006 MHT-CF-C30 N/A
Tooltip 2-3/4" 36 0.006 MHT-CF-C36 N/A
Tooltip 2-3/4" 40 0.006 MHT-CF-C40 N/A
Tooltip 2-3/4" 48 0.006 MHT-CF-C48 N/A
Tooltip 3-3/8" 6 0.006 MHT-CF-D06 N/A
Tooltip 4-1/2" 6 0.006 MHT-CF-E06 N/A
Tooltip 6" 6 0.010 MHT-CF-G06 N/A
Tooltip 6-3/4" 6 0.010 MHT-CF-H06 N/A
Tooltip 8" 6 0.010 MHT-CF-J06 N/A

Accessories Table

Description For Per Package Manual VacuCADSM Part Number
Gasket, Copper, DN16CF (1.33" OD) Flange , 0.837" OD, 0.640" ID, (10) Per Package 1-1/3" (DN16CF) Flanges 10 — N/A GA-0133
Gasket, Copper, DN35CF-DN40CF (2.75" OD) Flange, 1.895" OD, 1.451" ID, (10) Per Package 2-3/4" (DN35-DN40CF) Flanges 10 — N/A GA-0275
Gasket, Copper, DN50CF (3.375" OD) Flange, 2.425" OD, 2.010" ID, (10) Per Package 3-3/8" (DN50CF) Flanges 10 — N/A GA-0337
Gasket, Copper, DN63CF (4.50" OD) Flange, 3.243" OD, 2.506" ID, (10) Per Package 4-1/2" (DN63CF) Flanges 10 — N/A GA-0450
Gasket, Copper, DN100CF (6.00" OD) Flange, 4.743" OD,4.006" ID, (10) Per Package 6" (DN100CF) Flanges 10 — N/A GA-0600
Gasket, Copper, DN160CF (8.00" OD) Flange, 6.743" OD, 6.007" ID, (10) Per Package 8" (DN160CF) Flanges 10 — N/A GA-0800
Thread Lubricant, 4 Ounce Tube All CF Flanges 1 — N/A VZTL-4OZ
Gasket Removal Tool, For All Conflat (CF) Flange Sizes All CF Flanges 1 — N/A VZGRT
Gasket, Copper, DN25 (2.125" OD) Flange, 1.291" OD, 1.010" ID, (10) Per Package 2-1/8" (DN25CF) Flanges 10 — N/A GA-0212
Gasket, Copper, DN125CF (6.75" OD) Flange, 5.567" OD x 5.010" ID, (10) Per Package 6-3/4" (DN125CF) Flanges 10 — N/A GA-0675
Gasket Clips, For All Conflat (CF) Flange Sizes, (10) Per Package All CF Flanges 10 N/A VGC0275S

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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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