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ASA HV Reducer Full Nipples (Grooved Flanges)

ASA HV Reducer Full Nipples (Flat Flanges)

ASA HV Reducer Full Nipples (Flat Flanges): Size-Reducing Spools for ASA Grooved Flange Interfaces in High-Vacuum Systems

ASA HV Reducer Full Nipples (Flat Flanges) from TFM are precision-fabricated components designed to enable secure size transitions between dissimilar ASA flanges in high-vacuum (HV) applications. Constructed from 304L stainless steel tubing, these full nipples combine mechanical durability, vacuum-grade cleanliness, and corrosion resistance.

Each nipple is equipped with two rotatable flat ASA flanges, designed specifically to mate with grooved ASA flanges that contain elastomeric o-rings. This ensures compatibility with the sexed ASA flange standard, allowing for leak-tight sealing in systems that use o-ring compression between flat and grooved flanges.

The reducer configuration provides a streamlined solution for adapting between different ASA sizes (e.g., 10″ to 6″, 6″ to 4″) without requiring bulky adapters or multiple fittings.

Key Features of ASA HV Reducer Full Nipples (Flat Flanges):

  • Dual Flat ASA Flanges
    Allows secure mating with grooved ASA flanges using standard elastomeric o-rings for vacuum sealing down to 10⁻⁸ Torr.

  • Reducer Design
    Enables seamless connection between two different ASA flange sizes, ideal for system expansions, port resizing, or hybrid interface layouts.

  • 304L Stainless Steel Build
    Offers excellent resistance to corrosion, high-temperature cycling, and harsh chemical environments typical in vacuum processes.

  • Rotatable Flanges for Easy Alignment
    Both flat flanges are rotatable, facilitating quick, precise installation and optimal flange orientation during system integration.

  • Vacuum Cleaned & Leak Tested
    Each ASA HV Reducer Full Nipple (Flat Flanges) is helium leak tested and cleaned to meet stringent HV standards.

  • Standard & Custom Configurations Available
    TFM offers common reducer combinations and lengths. Custom tube lengths, diameters, wall thicknesses, and flange pairings can be manufactured upon request.

Applications:

  • Step-down or step-up connections in ASA-flanged HV systems

  • Pumping lines or chamber ports requiring flange size conversion

  • Retrofitting vacuum systems with dissimilar ASA interface points

  • Custom instrumentation or gas routing modules

  • Modular upgrades in research, aerospace, and semiconductor vacuum setups

To support full integration, TFM also provides matching grooved ASA flanges, o-rings (FKM, Buna-N), bolt sets, and blank flanges.

In summary, ASA HV Reducer Full Nipples (Flat Flanges) offer vacuum engineers a dependable, compact solution for size-matching ASA components with grooved flange terminations. Their dual-flat design ensures reliable sealing and smooth integration into high-vacuum environments.

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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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