A mechanical part used to connect pipes, valves, pumps, or other equipment in a piping system

A mechanical part used to connect pipes, valves, pumps, or other equipment in a piping system

A flange is a mechanical part used to connect pipes, valves, pumps, or other equipment in a piping system. It provides a strong, sealed joint that can also be easily assembled or disassembled for maintenance or inspection.

🔩 Definition

A flange is a flat, circular disc (usually made of metal) that is bolted to another flange with a gasket in between to create a tight seal.

⚙️ Main Functions

1. Connects pipes, valves, or equipment together

2. Allows disassembly for inspection, cleaning, or repairs

3. Provides strength and alignment to the piping system

4. Seals the joint to prevent leaks

🧱 Common Flange Types

• Weld Neck Flange (WN): Welded to the pipe; used for high pressure/temperature

• Slip-On Flange (SO): Slipped over the pipe and then welded; easy to install

• Socket Weld Flange (SW): For small-size, high-pressure pipes

• Blind Flange (BL): Used to close the end of a pipe

• Threaded Flange (TH): Screwed onto pipes without welding

• Lap Joint Flange (LJ): Used with a stub end; good for frequent dismantling

📐 Example

If you have two sections of pipe that need to be joined together:

• You weld or thread a flange onto each pipe end

• Place a gasket between them

• Bolt the two flanges together to make a tight, leak-proof connection