Vertical Can Pump Lead Times

[JmanTexas]

I am trying to source some vertical can pumps for a low pressure NGL handling operation and am getting lead times of 26-30 weeks. The specs are as follows:

Liquids = Hydrocarbons
Flow = 300 US GPM
Pump Temp = 58 degrees F - 84 degrees F
Specific Gravity = 0.5485
Vapor Press = 763.1
Viscosity = 0.1136
Disch Press = 770 psig
Suct Press = 750 psig - 1200 psig
Diff Press = 20
Diff head = 85
Site Elev = 240 ft above sea level

It is a fast track project and is becoming not so fast track by the unavailability of appropriate pumps. Any information on refurbished / used pump options would be greatly appreciated.

 

[DubMac]

You better watch out buying a refurbished or used pump for this service. Not that it can't be done; but this is a TOUGH service.

VERY high suction pressure (and you realize you can't have a 1200psi suction pressure with a 770psi discharge right?)

Very light hydrocarbons; you will need very highly engineered mechanical seals.

This is not a service to play around with; 26 weeks is not very long at all for an API can pump with these Conditions. Flowserve, Goulds, Sulzer would probably be at 30-40 weeks I'm guessing??

Not tyring to be disrespectful of your knowledge at all; sure you know what you are doing, but if you do get a used one make sure you get it from a pro. Try BEST Eqpt. out of Houston for used. You may also try Afton if they are still around; they used to specialize in condensate can pumps.

 

[BigInch]

If your suctin can go that high, your discharge pressure will probably go to something near 1220 or more, so be sure both suction and discharge are rated to ANSI #600

Only put off until tomorrow what you are willing to die having left undone. - Pablo Picasso

 

[bimr]

Are you really being quoted firm delivery times or just a ball park estimate?

It is not unusual to pay a small premium to have the delivery expedited.

It may be worthwhile to negotiate further.

 

[1gibson]

Good luck. That differential pressure is so small compared to the suction, you will have a lot of trouble finding a pump that operates in downthrust. Looking for a used one is that much more difficult.

The problem to solve is the shaft and seal sleeve area have suction pressure acting on the bottom, and atmospheric pressure on top. Major upthrust. If you need zero emissions then you'll have a dual seal + barrier fluid system, that package by itself will take 20 weeks to get!


I think you're barking up the wrong tree looking for a typical VS6 pump for this service. Not sure what's out there but can you use some sort of mag-drive? Can you upgrade the pumps in the line before you need this increase?

 

[TenPenny]

I would expect pumps like this to run anywhere from 26 to 50 wks, if you're dealing with any of the major manufacturers. That's the reality of the market right now, there's lots on the go, and they're all busy.