×
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

merits and demerits of VS1 and VS4
2

merits and demerits of VS1 and VS4

merits and demerits of VS1 and VS4

(OP)
Among the Vertical Suspended type pumps,

there are VS1 and VS4 type pumps.

What is the major defference with these two type?

From a ship owner's point of view,

What is more convenient to maintenance?

What pump type have more merit at efficiency, volume, etc?

please tell me the merits and demerits of these two pump types.

Hoping the soonest reply.

RE: merits and demerits of VS1 and VS4

2
naoe017
If we are on the same page and talking API terms VS 1 is a vertical turbine VS 4 is a vertical pump. Comparing the two is like comparing a full size pick up to a compact.  The VS 1 is a more expensive design and is available in sizes that will build over 500 psi. Its design is to build pressure without a significant increase in radial loads. Their curves are generally more flat so the discharge pressure does not fluctuate as much with flow as the VS4. The VS4 by design is to have a sharp drop in its performance curve so as flow increase the pressure will drop. The VS1 makes a better fire pump because you can control the amount of water  but maintain the pressure to get it where you want. But if all you want is to empty a sump with a consistent service conditions the VS4 should work fine as long as it is correctly sized.

Regards checman

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