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API 686 Requirements for vertically suspended can pump foundation

API 686 Requirements for vertically suspended can pump foundation

API 686 Requirements for vertically suspended can pump foundation

(OP)
Dear All,
Attached file shows the axial & side clearance requirements as per api 686 for vertically suspended can pump.
Is this applicable to low temp pumps. What i think the purpose for these clearance is just for the thermal expansion.
Hope to hear your expert advise.

RE: API 686 Requirements for vertically suspended can pump foundation

The drawing says typical. One would think that the space is an allowance so that any particular pump will fit in all applications. The diameter of the pump cans also do not have a uniform dimameter along the pump shaft.

RE: API 686 Requirements for vertically suspended can pump foundation

(OP)
Thanks bimr. Have you have the experience that you implemented these clearances on your installation? thanks..

RE: API 686 Requirements for vertically suspended can pump foundation

Pumps in low temperature service that require insulation will need greater clearance to accommodate finished insulation dimensions and piping that may be external the pump can.

http://xa.yimg.com/kq/groups/3862917/874904906/nam...

RE: API 686 Requirements for vertically suspended can pump foundation

The clearance is for easy installation and removal.Some time the can may not be perfectly straight and so is the lining.

RE: API 686 Requirements for vertically suspended can pump foundation

(OP)
Hi Pumpsonly & bmir,
Based on your comments the purpose of the clearance will be easy installation (removal & installation) and provision for the insulation for low temp pumps. thank you very much....

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