Generally, the pump inlet nozzle size is smaller than the suction line size. Therefore, usually, the reducer is required on suction pump nozzle. What the appropriate type of reducer should be applied ? Eccentric or Concentric ?
In this posting, I will share my experience in determining what reducer type should be used, whether it is eccentric or concentric ?
Hopefully, the following picture give you better understanding what the consideration in selection.
1. Suction Pump
Hopefully, the following picture give you better understanding what the consideration in selection.
You can refer to this link for check the availability of reducer size based on ANSI B16.9.
Eccentric type, TOP Flat is selected for suction pump.
Suction pump service fluid is liquid. To avoid build up vapor or bubble in the system, the eccentric type with TOP FLAT should be used.
2. Steam Flow
To avoid condensate accumulated which might will be potential cause slug flow, the eccentric, BOTTOM Flat type shall be used.
3. Flare Header
The flare header pipe shall be sloped to Flare KO Drum. The liquid formed along the pipe shall free draining to the KO Drum. Therefore, the appropriate type of reducer type is eccentric with BOTTOM flat.
My friends, That's all I can share ..
2. Steam Flow
To avoid condensate accumulated which might will be potential cause slug flow, the eccentric, BOTTOM Flat type shall be used.
3. Flare Header
The flare header pipe shall be sloped to Flare KO Drum. The liquid formed along the pipe shall free draining to the KO Drum. Therefore, the appropriate type of reducer type is eccentric with BOTTOM flat.
My friends, That's all I can share ..
What do you think ? what the appropriate type of reducer should be applied on control valves?
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