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ASA HV Reducer Full Nipples (Grooved & Flat Flanges)

ASA Nipples for High Vacuum Applications

We manufacture ASA nipples (spools) from 304L stainless steel tubing paired with ASA flanges. These flanges provide straightforward, sexed vacuum seals suitable for high vacuum (HV) applications; one flange features a groove to accommodate an o-ring, while the mating flange is smooth (flat).

Features of ASA Nipples

  • Half Nipples: Each half nipple comes with one fixed flange, which can be either flat or grooved, offering flexibility for different sealing requirements.
  • Reducer Nipples: Designed to adapt to two different flange sizes, these nipples enhance compatibility within your vacuum system.
  • Customization Options: We provide a selection of common lengths and tube diameters. Please contact us with your specific requirements, and we will be happy to provide tailored solutions.

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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