×
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

swing check valve used with air operated double diaphragm pump

swing check valve used with air operated double diaphragm pump

swing check valve used with air operated double diaphragm pump

(OP)
We are planning on utilizing a few pneumatic diaphragm pumps which will be discharging into a pressurized drain system. We currently have swing type check valves in the discharge of the pumps (as all lines entering the pressurized drain system have check valves).

Is there any good reason why we shouldn't use swing check valves in the discharge line? Like because its in reciprocating service and may wear excessively?

Thanks

RE: swing check valve used with air operated double diaphragm pump

Hey processeng2014,

I wouldn't worry about the wear, but a cwing check can cause hammers if backflow closes it too quick. It isnt clear the process contitions for your service or criticality. Process PD pump piping deserves some attention because of pulsation, premature pump or relief system failures, etc.

With respect to backflow, most diaghram pumps have internal ball or lift check valves essentual to their method of operation.

Good luch,
Sshep

RE: swing check valve used with air operated double diaphragm pump

The risk of clanging in a swing check at low flow is much higher than with a dual plate check valve on a horizontal pipe run.
A discharge pulsation dampener can also further help to smoothen out the flow pulsations with this pump.

RE: swing check valve used with air operated double diaphragm pump

Agree with George, consider installing a pulsation dampener. Swing checks are normally used on larger pumps. Consider installing a silent check valve.

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