Type of Flange

What is the most common type of flange used in process plant applications?

• Tongue-and-Groove (T&G)

• Raised Face (RF)

• Ring-Type Joint (RTJ)

• Flat Face (FF)

Which type of flange face has a gasket surface in the same plane as the bolting circle face?

• Raised Face (RF)

• Ring-Type Joint (RTJ)

• Flat Face (FF)

• Tongue-and-Groove (T&G)

In which pressure classes is the height of the Raised Face flange approximately 1/4 inch?

• 150 and 300

• 400, 600, 900, 1500, and 2500

• 600 and higher

• 700 bar

What is the purpose of a Raised Face (RF) flange?

• To decrease pressure containment capability

• To increase the height of the flange

• To reduce the contact area with the gasket

• To concentrate more pressure on a smaller gasket area

Which type of gasket is suitable for high-pressure and high-temperature applications?

• Flat Face gaskets

• Ring Type Joint gaskets

• Spiral wound gaskets

• Metallic composite gaskets

What is the main advantage of Tongue-and-Groove (T&G) flanges?

• They are self-aligning

• They are suitable for high-temperature services

• They have a larger contact area

• They are cheaper than other flange types

Which type of flange face should never be bolted together due to mismatched contact surfaces?

• Ring-Type Joint (RTJ) and Tongue-and-Groove (T&G)

• Flat Face (FF) and Raised Face (RF)

• Male-and-Female (M&F) and Tongue-and-Groove (T&G)

• Male-and-Female (M&F) and Raised Face (RF)

What is the recommended material for Ring Type Joint gaskets for high-pressure applications?

• Aluminum

• Copper

• Titanium

• Nickel alloys

What is the main disadvantage of Male-and-Female (M&F) flanges?

• They are not commercially available

• They are difficult to align

• They require specialized sealing material

• They are not suitable for high-pressure applications

What is the recommended surface roughness for flange faces according to ASME B16.5?

• 50 to 100 in Ra

• 125 to 250 in Ra

• 300 to 500 in Ra

• 600 to 800 in Ra