Piping, Flanges, and Gaskets

Question 1

What type of flange is this?

Answer 1

Flat Faced Flange

Question 2

What is the advantage of a flat faced flange?

Answer 2

FF flanges avoid the bending moment that is put on the flange as the bolts are torqued. Some flange materials can easily break at this time, such as cast iron and fiberglass. FF flanges eliminate this problem.

Question 3

What type of flange is this?

Answer 3

Raised Face Flange

Question 4

What is the advantage of a raised face flange?

Answer 4

Raised Face Flanges are widely used in oil and gas pipelines. They are appropriate for both high and low temperatures and pressures. The main purpose of the RF flange is to concentrate the contact pressure on the gasket area, resulting in increased strength of the seal.

Question 5

What type of flange is this?

Answer 5

Ring Type Joint

Question 6

What is the advantage of a Ring Type Joint flange?

Answer 6

RTJ Flanges are a good alternative to raised face in certain applications. Typically, higher pressure and temperature projects use Ring Type Joints. They provide a more effective sealing solution to media critical pipeline and pressure vessel infrastructure.

Question 7

What type of flange is designed for high-pressure and/or high-temperature pipeline applications?

Answer 7

The RTJ flange (Ring Type Joint) is designed for high-pressure and/or high-temperature pipeline applications. This makes them the required standard in API specification flanges. Applications include oil field valves, pipework assemblies, and high integrity pressure vessel joints.

Question 8

True or False?: Flat-faced flanges can be used with raised faced flanges?

Answer 8

False. Misatched flanges prevent gaskets from seating properly and leads to gaskets leaking and wearing out.

Question 9

What does EPDM stand for?

Answer 9

ethylene propylene diene terpolymer

Question 10

For 4” water piping, what is the approximate maximum support spacing?

Answer 10

14 feet