×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Vertical Can Pump Lead Times

Vertical Can Pump Lead Times

Vertical Can Pump Lead Times

(OP)
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.

 

RE: Vertical Can Pump Lead Times

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.

RE: Vertical Can Pump Lead Times

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

RE: Vertical Can Pump Lead Times

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.

RE: Vertical Can Pump Lead Times

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?

RE: Vertical Can Pump Lead Times

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.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources