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ASA HV Reducer Full Nipples (Grooved Flanges)

ASA HV Reducer Full Nipples (Grooved Flanges)

ASA HV Reducer Full Nipples (Grooved Flanges): Dual-Grooved Connections for ASA Flange Size Transitions in High-Vacuum Systems

ASA HV Reducer Full Nipples (Grooved Flanges) from TFM are engineered for vacuum professionals who require size transitions between ASA flanges while maintaining consistent o-ring sealing. Constructed from 304L stainless steel tubing, these components provide robust mechanical strength, corrosion resistance, and excellent vacuum compatibility in high-vacuum (HV) environments.

Each nipple is fitted with two rotatable ASA flanges, both grooved to accommodate elastomeric o-rings. This dual-grooved configuration is ideal for mating with flat ASA flanges on either side, ensuring reliable sexed vacuum sealing across different flange sizes.

The reducer design allows for step-down or step-up connections between dissimilar ASA flange diameters (e.g., 10″ to 8″), helping to simplify system expansion, retrofitting, or port conversion.

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

  • Dual Grooved ASA Flanges
    Designed to interface securely with flat ASA flanges using o-rings, enabling a consistent, leak-tight seal in accordance with ASA vacuum standards.

  • Reducer Geometry
    Allows mating between two different flange sizes (e.g., 4″ to 6″, 6″ to 8″), making these nipples ideal for step transitions within vacuum piping systems.

  • 304L Stainless Steel Construction
    Provides excellent durability, vacuum compatibility, and corrosion resistance in chemically aggressive or high-temperature applications.

  • Rotatable Flanges for Ease of Installation
    Both ASA flanges are rotatable to ensure precise alignment, particularly valuable in complex system layouts or tight spatial configurations.

  • Vacuum-Grade Cleaned and Leak-Tested
    Each ASA HV Reducer Full Nipple (Grooved Flanges) is helium leak tested and cleaned to meet the demands of sensitive HV systems.

  • Available in Standard and Custom Configurations
    Common reducer combinations and lengths are offered, with full customization options available for tube diameter, length, wall thickness, and flange pairing on request.

Applications:

  • Transition points between different ASA flange sizes

  • Foreline or chamber ports with hybrid interface requirements

  • Modular expansion or system retrofit in ASA-based vacuum setups

  • Diagnostic or pumping ports requiring size adaptation

  • Research, semiconductor, or aerospace vacuum systems

TFM also offers compatible flat ASA flanges, FKM or Buna-N o-rings, bolt kits, and blank-off plates to ensure full installation support and sealing integrity.

In conclusion, ASA HV Reducer Full Nipples (Grooved Flanges) offer a reliable and space-efficient solution for vacuum engineers seeking to bridge flange size differences without sacrificing seal performance. Their grooved flange design ensures consistent o-ring compatibility across your ASA-standard system.

Ordering Table

Flange Size/OD Type Drawing Nominal Tube OD ASA Flange OD (Large) ASA Flange OD (Small) Note Dim A Part Number
ASA 3 (7.50" OD) Fixed Tooltip 1-1/2 7.5 4.25 5 AFR07X04
ASA 8 (13.50" OD) Fixed Tooltip 6 13.5 9 — 5 AFR13X09
ASA 10 (16.00" OD) Fixed Tooltip 8 16 11 — 5 AFR16X11
ASA 10 (16.00" OD) Rotatable Tooltip 8 16 11 — 5 AFR16X11R
ASA 10 (16.00" OD) Fixed Tooltip 10 16 13.5 — 5 AFR16X13
ASA 10 (16.00" OD) Rotatable Tooltip 10 16 13.5 — 5 AFR16X13R

 

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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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