8/20/2019 Valve Inspection PEW 101

1/17

 

Valve Inspection

8/20/2019 Valve Inspection PEW 101

2/17

 

Valve Inspection

 A leak or failure in a

piping system couldbecome a potential source

of fire or explosion.

8/20/2019 Valve Inspection PEW 101

3/17

 

Valve Inspection

 A inspector must have a

good understanding of theequipment he is inspecting.

8/20/2019 Valve Inspection PEW 101

4/17

 

Valve Inspection

 The most common

mechanical device used inSaudi Aramco is the valve.

8/20/2019 Valve Inspection PEW 101

5/17

 

Valve Inspection 

Valves in any piping system

serve four main basic

functions.

 

8/20/2019 Valve Inspection PEW 101

6/17

 

Valve Inspection 

1. Shut off or open a system to

fluid flo

!. "egulate or throttle any fluidflo

 

8/20/2019 Valve Inspection PEW 101

7/17 

Valve Inspection 

#. $revent backflo

%. "elieve $ressure

8/20/2019 Valve Inspection PEW 101

8/17 

Valve Inspection

 &heck valves have only one

main function to perform' and

 that is the prevention of 

 backflo in any system.

8/20/2019 Valve Inspection PEW 101

9/17 

Valve Inspection 

Some things that determine the

type of valve used are …

Speed of operation required  

8/20/2019 Valve Inspection PEW 101

10/17 

Valve Inspection 

 Amount of positive shut off 

Highly erosive or corrosive service

Temperature of process material 

 

8/20/2019 Valve Inspection PEW 101

11/17 

Valve Inspection 

Pressure in the piping system

 Amount of vibration present 

 Available spaceEpense

 

8/20/2019 Valve Inspection PEW 101

12/17 

Valve Types ()ate*

 

8/20/2019 Valve Inspection PEW 101

13/17 

Valve Types ($lug*

 

8/20/2019 Valve Inspection PEW 101

14/17 

Valve Types (+all*

 

8/20/2019 Valve Inspection PEW 101

15/17 

Valve Types (+utterfly*

 

8/20/2019 Valve Inspection PEW 101

16/17 

Valve Types ()lobe*

 

8/20/2019 Valve Inspection PEW 101

17/17

Valve Types (,eedle*