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ASA HV Reducer Full Nipples (Grooved & Flat Flanges)

ASA HV Reducer Full Nipples (Grooved & Flat Flanges)

ASA HV Reducer Full Nipples (Grooved & Flat Flanges): Reliable Multi-Size Transitions for High Vacuum Systems

The ASA HV Reducer Full Nipples (Grooved & Flat Flanges) from TFM are engineered to provide robust and leak-tight connections between ASA flanges of differing sizes within high vacuum (HV) systems. These spools are constructed from high-quality 304L stainless steel tubing, delivering excellent mechanical strength, corrosion resistance, and vacuum compatibility in research, industrial, or process environments.

Each nipple features a pair of fixed ASA flanges—one grooved to accommodate an o-ring for sealing, and the other flat, creating a sexed flange pair that ensures vacuum integrity. The reducer design allows you to adapt between two different nominal pipe sizes, making these components ideal for vacuum setups with mixed flange dimensions.

Key Features:

  • Reducer Configuration
    Designed specifically to connect two ASA flanges of different sizes, enabling system expansion or reconfiguration without full redesign.

  • Grooved & Flat Flange Ends
    One end features a groove for o-ring sealing, while the other is flat, forming a standard ASA vacuum joint for reliable leak resistance.

  • 304L Stainless Steel Construction
    Offers durability under vacuum conditions and resilience against corrosive gases and thermal cycling, suitable for cleanroom and UHV-prep environments.

  • Wide System Compatibility
    Fits seamlessly into existing ASA flange-based systems—commonly found in HV chambers, foreline networks, and mechanical pump manifolds.

  • Customization Available
    While standard lengths and diameters are available, TFM also supports tailored fabrication to suit non-standard dimensions or integration requirements.

Applications:

  • Connecting chambers or components with mismatched flange sizes

  • Facilitating foreline or pump transitions without the need for custom reducers

  • Building or modifying HV manifolds, gas delivery paths, or pump trees

  • Suitable for thin-film deposition tools, analytical instrumentation, and vacuum R&D labs

With a complete range of ASA HV nipples, including standard, half, and reducer configurations—in both grooved and flat flange styles—TFM ensures maximum flexibility and reliability for your high vacuum system design.

Ordering Table

ASA HV Reducer Full Nipples (Grooved & Flat Flanges)

Flange Type Flange Size/OD Drawing Nominal Tube OD Grooved Flanges ASA Flange OD (Large) ASA Flange OD (Small) Dim A Part Number
Rotatable ASA 4 (9.00" OD) Tooltip 3 Flange 1 (larger) 9 6 5 AFR09X06G1R
Fixed ASA 8 (13.50" OD) Tooltip 4 Flange 1 (larger) 13.5 7.5 5 AFR13X07G1
Fixed ASA 8 (13.50" OD) Tooltip 8 Flange 1 (larger) 13.5 11 5 AFR13X11G1
Fixed ASA 10 (16.00" OD) Tooltip 8 Flange 1 (larger) 16 11 5 AFR16X11G1
Rotatable ASA 10 (16.00" OD) Tooltip 8 Flange 1 (larger) 16 11 5 AFR16X11G1R
Fixed ASA 10 (16.00" OD) Tooltip 8 Flange 2 (smaller) 16 11 5 AFR16X11G2

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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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