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ASA HV Reducer Full Nipples (Grooved & Flat Flanges)

ASA HV Reducer Full Nipples (Grooved Flanges)

ASA HV Reducer Full Nipples (Grooved Flanges): Adaptable Connections for High Vacuum Line Transitions

The ASA HV Reducer Full Nipples (Grooved Flanges) offered by TFM are purpose-built to connect ASA flanges of different sizes in high vacuum (HV) environments, while maintaining robust, vacuum-tight performance. Manufactured from 304L stainless steel tubing, these reducer nipples feature two grooved ASA flanges, each engineered to accommodate elastomeric o-rings for secure sealing under vacuum.

Unlike standard full nipples, the reducer version is specifically designed to bridge two dissimilar nominal flange sizes, providing a straightforward solution for modifying or expanding vacuum pipelines without major structural changes. The dual grooved ends offer greater sealing uniformity and are ideal where both connected components require o-ring retention.

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

  • Dual Grooved ASA Flanges
    Both ends of the nipple are equipped with grooved flanges to support o-ring-based sealing, allowing easy integration into ASA flange systems with vacuum-safe joints.

  • Reducer Design for Multi-Size Connections
    Facilitates a secure transition between two different ASA flange diameters, enhancing system compatibility and flexibility during retrofits or new construction.

  • 304L Stainless Steel Construction
    Known for its corrosion resistance and mechanical strength, this material is ideal for demanding HV setups, including those involving reactive gases or high bake-out temperatures.

  • High Vacuum Performance
    When paired with suitable o-rings and bolts, these nipples support vacuum levels down to approximately 10⁻⁷ torr, making them suitable for a wide range of research and industrial systems.

  • Customization Support
    TFM provides standard lengths and tube diameters, but can also custom-fabricate reducer full nipples to meet your unique specifications—ideal for non-standard vacuum ports or system geometries.

Typical Applications:

  • Transitioning between mismatched ASA flange sizes in vacuum chambers or pump lines

  • Integration into foreline systems, manifolds, or HV distribution networks

  • Adapting legacy systems to newer components without extensive retrofitting

  • Vacuum system builds in thin-film coating, analytical instrumentation, or plasma research

TFM offers a complete range of ASA HV nipples, including half and full styles, grooved or flat variants, and reducer formats—each precision-built for demanding vacuum system requirements.

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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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