Product Image
Image
ansi-aluminum-reducing-flange-600x600-1
ANSI Aluminum Reducing Flange
Designed to connect pipes of different diameters while maintaining a secure, ANSI-standard bolted connection. Ideal for compressed air, vacuum, and inert gas systems, this flange allows contractors to transition between pipe sizes without compromising flow or system integrity. Made from corrosion-resistant Aluminum, it features metal clamshell union connectors and lug ring design for leak-free connection. Its full-volume flow and rugged construction make it perfect for demanding industrial environments. Reusable and easy to maintain, the reducing flange simplifies system modifications and ensures long-term reliability.

Key Features
- Durable Construction: Made from Aluminum, offering exceptional resistance to corrosion, vibration, and thermal variation.
- Weather-Resistant: Performs reliably in outdoor and harsh industrial conditions.
- Metal Clamshell Connectors: Stronger and more durable than polymer alternatives.
- 63–200mm: Lugged ring for zero risk of disconnection.
- Leak-Free Guarantee: Engineered for superior sealing and longevity compared to traditional pipe systems.
-  No welding, gluing, brazing, soldering, or thread cutting required.
- Quick Assembly: Supplied with two union connectors for fast, full-volume flow connection.
- Reusable & Dismantlable: Easily disassembled and reassembled for maintenance or system upgrades.
- Non-Flammable Materials: Safe for use in high-risk industrial zones.
- ANSI-Compliant Design: Ensures compatibility with standard flanged equipment and piping systems.
- Reducing Functionality: Allows seamless connection between varying pipe sizes without compromising flow efficiency.
Available Sizes
- 2½” to 10”
Applications
- Compressed Air (dry, wet, lubricated)
- Vacuum Systems
- Inert Gases (Argon, Helium, Nitrogen, CO₂ mixes)
Certifications
- ASME B31.1, B31.3
- ASTM B241, EN755-8, GB/T4437.1-2000, JIS H4080
- ISO 9001, 14001, 8573-1
Warranty
- 10-Year Warranty
The ANSI Aluminum Reducing Flange is a vital component for contractors seeking a durable, leak-proof, and standards-compliant solution for transitioning between pipe sizes in industrial piping systems—delivering performance, flexibility, and long-term reliability.

Additional information
Weight
8.3215 lbs
ANSI Reducing Flange
63mm (2-1/2") Pipe to 80mm (3") Flange, 63mm (2-1/2") Pipe to 100mm (4") Flange, 80mm (3") Pipe to 63mm (2-1/2") Flange, 80mm (3") Pipe to 100mm (4") Flange, 800mm (3") Pipe to 125mm (5") Flange, 100mm (4") Pipe to 80mm (3") Flange, 100mm (4") Pipe to 125mm (5") Flange, 100mm (4") Pipe to 150mm (6") Flange, 150mm (6") Pipe to 125mm (5") Flange, 250mm (10") Pipe to 200mm (8") Flange
Color
Gray
Features
Bolts and Gasket Included
Pressure
188 PSI, 232 PSI, 29.9 inHg (99% vacuum), 300 PSI
Connection
Lugged Ring Clamping Style
Temperature
-4°F to +176°F
Material
Aluminum
AIRpipe Certification
ASME, ASTM, CE, CRN, EN, ISO 14001, ISO 8573-1, ISO 9001, TS, TUV, UL, ASME B31.1, B31.3, ASTM B241, EN755-8, GB/T4437.1-2000, JIS H4080, ISO 9001, 14001, 8573-1

Use AIRpipe products in your next project design.

Download the drawing files in AutoCAD or STEP formats for your design software.

ansi-aluminum-reducing-flange.zip (ZIP, 833.8KB)
ZIP CAD files
Download