A flange adapter is a type of pipe fitting that allows two different types of flanges to be connected together. It is a adapter that connects two flanges with different sizes, shapes, or types, such as:

– Different diameters (e.g., 2″ to 4″)
– Different flange types (e.g., slip-on to weld neck)
– Different materials (e.g., carbon steel to stainless steel)
– Different pressure ratings (e.g., 150# to 300#)

Flange adapters are used to:

– Connect pipes with different end connections
– Adapt to changes in pipe size or type
– Allow for easier maintenance or replacement of pipes or equipment
– Reduce the need for custom or specialty flanges
– Save time and money by using standard flanges with an adapter

Types of flange adapters include:

– Reducers (e.g., 2″ to 1″)
– Expanders (e.g., 1″ to 2″)
– Adapter flanges (e.g., slip-on to weld neck)
– Spacer rings (e.g., for changing bolt patterns)
– Flange inserts (e.g., for changing flange types)

Flange adapters are commonly used in various industries, including:

– Oil and gas
– Chemical processing
– Power generation
– HVAC
– Water treatment
– Piping systems

When selecting a flange adapter, consider factors such as:

– Pipe size and type
– Flange type and size
– Material compatibility
– Pressure rating
– Temperature range
– Corrosion resistance
– Ease of installation and maintenance

Flange adapters are typically made from materials that match the flanges they are connecting, such as:

1. Carbon steel (e.g., A105, A350)
2. Stainless steel (e.g., 304, 316, 321)
3. Alloy steel (e.g., A182 F1, F5, F9)
4. Duplex steel (e.g., 2205, 2507)
5. Super duplex steel (e.g., 2507, 2707)
6. Inconel (e.g., 600, 625, 800)
7. Monel (e.g., 400, 500)
8. Hastelloy (e.g., B2, C276)
9. Titanium (e.g., Gr. 2, Gr. 5)
10. Copper nickel (e.g., 90/10, 70/30)

The material grade chosen depends on the application, pressure, temperature, and corrosion requirements.

Some common material grades for flange adapters include:

– ASTM A105 (carbon steel)
– ASTM A182 (alloy steel)
– ASTM A240 (stainless steel)
– ASTM B16.5 (copper nickel)
– ASTM B564 (Inconel)
– ASTM B366 (Monel)
– ASTM B381 (Titanium)
– API 6A (high-pressure steel)

It’s important to note that the material grade should match the flanges being connected, and the adapter should be designed to withstand the same pressure, temperature, and corrosion conditions as the flanges.