valves experience

[alhnaity]

could anyone guide me to respectable reference for valves knowledge in oil and gas field -contain casting and forging standard/abbriviation,international standards(ASME,ANSI,API),material grades and application, functions of valves and application for each typeand most international certificates for this industry?

any help will be highly appriciated.

 

[alchemon]

For the gas industry:

API 6D is the normal standard for gas valves. Most transmission companies will require them. Typically they are ANSI class 600 or 900 pressure rating. Gate valves, butterfly, plug, and ball valves are all common. Cameron is the most common cadillac transmission valve.

For distribution, you will see mainly forged steel ANSI 300 and 150 ball and plug valves. You will also find smaller threaded malleable iron "meter stops". Ball valves are more popular than they used to due to the easier maintenance. DO NOT SPECIFY A FLOATING BALL VALVE FOR A DEDICATED THROTTLING VALVE OR A BLOW DOWN VALVE. You will bend the shaft of the ball during construction and the valve will be worthless due to the high differential across the ball.

Most valves will conform to ASTM A105 as the MFG specification. There are others, but this is commonly used. If it is flanged, it should meet ASME B16.5 there is a specification for weld-in valves, but I can't remember it now. Just search for API 6D valve and you will find a lot of specification information

 

[alhnaity]

thank you very much, but is there any recommended reference for valves industry??

 

[Danlap]

alhnaity,

Mind me for asking, What is the purpose of this question? it is really broad subject.
On which side of the (valve) industry you are? End user / valve manufacturer / service company / student?
On which part of the world you are? I personally see segregation (or even mixed up) of standard/reference for North America, South America, Europe, Scandinavian, Middle East, South East Asia, East Asia and Australia?
And finally Downstream or Upstream? What is the expected valve lifetime for your industry?
Oil and gas is not just oil and gas, there is water (brackish, cool, sea), catalyst, H2S, etc. Which all have different 'reaction' with material selection.
Hundreds of matrix should be follow through before selecting A valve.

Regards,
MR

Greenfield and Brownfield have one thing in common; Valve(s) is deemed to "run to fail" earlier shall compared to other equipments

 

[BryceBunting]

Check out

http://valveactuation.com/valve-application-training/

Covers most of the topics including:
- The 4 Functions of Valves
- Four Types of Sealing Mechanisms
- Materials of Construction
- Various Pressure Ratings
- ANSI Seat Classes and Leakage Rate Explanation