Previous in Forum: Hammer Union   Next in Forum: Change Iconel Type and PWHT
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
4 comments
Rate Comments: Nested
Whitephone
Guru

Join Date: Jan 2010
Location: Mineral wells Tx
Posts: 630
Good Answers: 34

Oil, Water or What?

09/29/2010 11:46 AM

This one is a question on semantics.

Which is the difference between hydraulic test and hydrostatic test?
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Good Answers:

These comments received enough positive votes to make them "good answers".
Anonymous Poster
#1

Re: Oil, Water or What?

09/29/2010 1:05 PM

In the static case there is no fluid movement obviously.
Register to Reply
Tornado
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#2

Re: Oil, Water or What?

09/29/2010 2:00 PM

I think the more correct term is "hydrostatic," but "hydraulic" is sometimes used as a synonym. This is not very desirable, because "hydraulic" also means other things.

Even if you test a vessel with oil (such as for vessels destined for halocarbon refrigerant service) it is still called a hydrostatic test.

__________________
 In vino veritas; in cervisia carmen; in aqua E. coli.
Register to Reply
Holzfeller
Guru
Hobbies - Musician - New Member United Kingdom - Member - New Member Engineering Fields - Mechanical Engineering - New Member Engineering Fields - Transportation Engineering - New Member

Join Date: Mar 2007
Location: England
Posts: 951
Good Answers: 48
#3

Re: Oil, Water or What?

09/29/2010 2:37 PM

A hydrostatic test, as implied above, involves no flow. So it is a pressure test only. For example, a centrifugal pump rated at 16bar might be pressurized up to 24bar to ensure there are no leaks.

A hydraulic test might be better termed a performance test, so in this case the pump would be run to measure flowrate vs. pressure.
Register to Reply
4
Anonymous Poster
#4

Re: Oil, Water or What?

09/30/2010 2:54 AM

hi.....

  • Hydromechanics, the branch of physics that deals with forces acting upon & within fluids,liquids & gases.
  • Hydromechanics is divided into hydrodynamics, the study of fluids in motion(Hydraulic); and hydrostatics, the study of fluids at rest.
  1. Hydrodynamics, the study of fluids in motion
  2. Hydrostatics, the study of fluids at rest.

A liquid or gas flows from regions of high pressure to regions of low pressure, for example, when water is squeezed from a sponge .

so hydraulic test is used for flow rate, velocity, head etc

hydrostatic test is used for pressure measurements.
Register to Reply Good Answer (Score 4)
No more Good Answers.
Register to Reply
Have a Different Question?
4 comments

Good Answers:

These comments received enough positive votes to make them "good answers".
Copy to Clipboard

Users who posted comments:

Anonymous Poster (2); Holzfeller (1); Tornado (1)

Previous in Forum: Hammer Union   Next in Forum: Change Iconel Type and PWHT

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Quality Assurance / Control:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (187 right now)
Show Members
Advertisement