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ASA HV Flanges – Rotatable Grooved

ASA HV Flanges – Rotatable Grooved

Introduction

ASA HV Flanges – Rotatable Grooved are high-vacuum connection components engineered for systems that require reliable sealing, precise alignment, and efficient installation. The rotatable design simplifies bolt alignment during assembly, while the grooved sealing face enhances gasket positioning and stability—making these flanges well suited for demanding laboratory and industrial HV applications.

Detailed Description

ASA rotatable grooved flanges combine a flat sealing geometry with a precision-machined groove and a freely rotating outer ring. The rotatable ring allows installers to align bolt holes without twisting connected pipes or chambers, reducing mechanical stress and installation time. The grooved face helps retain the gasket during assembly, minimizing the risk of misalignment and ensuring consistent compression.

Manufactured from vacuum-grade stainless steel (commonly 304 or 316L), these flanges provide excellent corrosion resistance, mechanical strength, and low outgassing. Smooth internal surfaces reduce particle generation and support clean vacuum operation. Optional electropolishing is available for applications with stringent cleanliness requirements.

Key benefits include:

  • Rotatable outer ring for fast, stress-free alignment

  • Grooved sealing face for secure gasket retention

  • Robust stainless steel construction for repeated use

  • Consistent, leak-tight performance in HV systems

Applications

  • High-vacuum piping, manifolds, and chamber connections

  • Thin film deposition systems (PVD, sputtering, evaporation)

  • Semiconductor processing tools and R&D setups

  • Analytical instruments and vacuum diagnostics

  • Industrial HV vacuum lines requiring frequent assembly

Technical Parameters

ParameterTypical Value / RangeImportance
MaterialStainless Steel 304 / 316LStrength, corrosion resistance
Flange TypeASA HV, rotatable groovedEasy alignment, stable sealing
Sealing MethodGrooved face with gasketImproves gasket positioning
SizesStandard ASA sizes (custom available)System compatibility
Surface FinishMachined / electropolished (optional)Cleanliness & outgassing control
Vacuum RangeUp to ~10⁻⁷ mbar (typical)Suitable for HV systems

Comparison with Related ASA Flanges

Flange TypeKey AdvantageTypical Application
ASA Rotatable GroovedEasy alignment + gasket retentionComplex or repeat assemblies
ASA Rotatable FlatEasy alignmentGeneral HV connections
ASA Non-Rotatable GroovedRigid, simpleFixed layouts

FAQ

QuestionAnswer
What advantage does the grooved face provide?It helps hold the gasket in place during assembly for consistent sealing.
Why choose a rotatable flange?It simplifies bolt alignment without rotating connected components.
Is this flange suitable for UHV?It is primarily intended for HV; CF flanges are recommended for UHV.
Are gaskets included?Gaskets are typically supplied separately unless requested.
Can custom sizes or finishes be supplied?Yes, custom dimensions and surface finishes are available.

Packaging

Our ASA HV Flanges – Rotatable Grooved are thoroughly cleaned, capped on sealing surfaces, and individually packed. Protective foam and export-grade cartons or wooden crates are used to prevent damage and contamination during transport and storage.

Conclusion

ASA HV Flanges – Rotatable Grooved provide a dependable, installer-friendly solution for high-vacuum connections where alignment flexibility and gasket stability are critical. With precision machining, durable materials, and optional customization, they integrate seamlessly into both laboratory and industrial HV systems.
For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.

Ordering Table

Flange Size/OD Type Flange Material Drawing Bore Bolt Hole Dia. # of Bolt Holes Note Dim A Dim B Dim C Dim D Dim E Dim F Part Number
ASA 6 (11.00" OD) Rotatable Grooved 304L SS Tooltip Blank 0.81 8 — 11 0.75 Blank — — 9.5 ASA1100X00GR
ASA 6 (11.00" OD) Rotatable Grooved 304L SS Tooltip 6.02 0.81 8 — 11 0.75 6.02 5.92 0.38 9.5 ASA1100X60GR
ASA 6 (11.00" OD) Rotatable Grooved 304L SS Tooltip 8.02 0.81 8 — 11 0.75 8.02 7.88 0.38 9.5 ASA1100X80GR
ASA 8 (13.50" OD) Rotatable Grooved 304L SS Tooltip Blank 0.81 8 — 13.5 0.75 Blank — — 11.75 ASA1350X00GR
ASA 8 (13.50" OD) Rotatable Grooved 304L SS Tooltip 10.02 0.81 8 — 13.5 0.75 10.02 9.88 0.38 11.75 ASA1350X10GR
ASA 8 (13.50" OD) Rotatable Grooved 304L SS Tooltip 8.02 0.81 8 — 13.5 0.75 8.02 7.88 0.38 11.75 ASA1350X80GR
ASA 10 (16.00" OD) Rotatable Grooved 304L SS Tooltip Blank 0.81 12 16 0.75 Blank — — 14.25 ASA1600X00GR
ASA 10 (16.00" OD) Rotatable Grooved 304L SS Tooltip 10.02 0.81 12 — 16 0.75 10.02 9.88 0.38 14.25 ASA1600X10GR
ASA 10 (16.00" OD) Rotatable Grooved 304L SS Tooltip 12.02 0.81 12 — 16 0.75 12.02 11.88 0.38 14.25 ASA1600X12GR
ASA 1 (4.25" OD) Rotatable Grooved 304L SS Tooltip Blank 0.63 4 — 4.25 0.5 Blank — — 3.13 ASA425X00GR
ASA 1 (4.25" OD) Rotatable Grooved 304L SS Tooltip 1.01 0.63 4 — 4.25 0.5 1.01 0.94 0.25 3.13 ASA425X10GR
ASA 1 (4.25" OD) Rotatable Grooved 304L SS Tooltip 1.51 0.63 4 — 4.25 0.5 1.51 1.44 0.25 3.13 ASA425X15GR
ASA 1.5 (5.00" OD) Rotatable Grooved 304L SS Tooltip Blank 0.63 4 — 5 0.5 Blank — — 3.88 ASA500X00GR
ASA 1.5 (5.00" OD) Rotatable Grooved 304L SS Tooltip 1.51 0.63 4 — 5 0.5 1.51 1.44 0.25 3.88 ASA500X15GR
ASA 1.5 (5.00" OD) Rotatable Grooved 304L SS Tooltip 2.01 0.63 4 — 5 0.5 2.01 1.94 0.25 3.88 ASA500X20GR
ASA 1.5 (5.00" OD) Rotatable Grooved 304L SS Tooltip 2.51 0.63 4 — 5 0.5 2.51 2.44 0.25 3.88 ASA500X25GR
ASA 2 (6.00" OD) Rotatable Grooved 304L SS Tooltip Blank 0.75 4 — 6 0.5 Blank — — 4.75 ASA600X00GR
ASA 2 (6.00" OD) Rotatable Grooved 304L SS Tooltip 2.01 0.75 4 — 6 0.5 2.01 1.94 0.25 4.75 ASA600X20GR
ASA 2 (6.00" OD) Rotatable Grooved 304L SS Tooltip 2.51 0.75 4 — 6 0.5 2.51 2.44 0.25 4.75 ASA600X25GR
ASA 2 (6.00" OD) Rotatable Grooved 304L SS Tooltip 3.01 0.75 4 — 6 0.5 3.01 2.94 0.25 4.75 ASA600X30GR
ASA 2 (6.00" OD) Rotatable Grooved 304L SS Tooltip 3.51 0.75 4 — 6 0.5 3.51 3.44 0.25 4.75 ASA600X35GR
ASA 3 (7.50" OD) Rotatable Grooved 304L SS Tooltip Blank 0.75 4 — 7.5 0.5 Blank — — 6 ASA750X00GR
ASA 3 (7.50" OD) Rotatable Grooved 304L SS Tooltip 3.01 0.75 4 — 7.5 0.5 3.01 2.94 0.25 6 ASA750X30GR
ASA 3 (7.50" OD) Rotatable Grooved 304L SS Tooltip 3.51 0.75 4 — 7.5 0.5 3.51 3.44 0.25 6 ASA750X35GR
ASA 3 (7.50" OD) Rotatable Grooved 304L SS Tooltip 4.01 0.75 4 — 7.5 0.5 4.01 3.92 0.25 6 ASA750X40GR
ASA 4 (9.00" OD) Rotatable Grooved 304L SS Tooltip Blank 0.75 8 — 9 0.5 Blank — — 7.5 ASA900X00GR
ASA 4 (9.00" OD) Rotatable Grooved 304L SS Tooltip 4.01 0.75 8 — 9 0.5 4.01 3.92 0.25 7.5 ASA900X40GR
ASA 4 (9.00" OD) Rotatable Grooved 304L SS Tooltip 6.02 0.75 8 — 9 0.5 6.02 5.92 0.25 7.5 ASA900X60GR

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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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