×
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

Knifegate Mounted in Horizontal Direction

Knifegate Mounted in Horizontal Direction

Knifegate Mounted in Horizontal Direction

(OP)
My colleague is working on a valve installation on a chilled water supply to one of our customers. At the tail end of the project, the customer decided to add temporary chiller connections for emergency use. The supply to the connections in a 24" line off of our 60" main. The customer wants an isolation valve in the event that the temporary chiller connections develop a leak. Space is nearly non-existent to add a valve. Originally, my colleague looked at a butterfly valve, but it is so close to the wall, there is no clearance for the mounting hardware. My colleague is now considering a knifegate, however it would have to be mounted so the gate moves to the side rather than up due to height limitations. Does anyone have any successful experience with this type of configuration and if so, can you offer make/model of valve used.

RE: Knifegate Mounted in Horizontal Direction


This is not a commercial forum so I am afraid you have to do the commercial part elsewhere.

On the other hand I do have experience with larger horizontal mounted knifegate valves, both positive and negative.

Most (all) suppliers warn against this positioning, as this could fast lead into trouble if not following general 'best practice' for selection of product and mounting/operation:

a) Select a renowned brand, with longtime references you can inspect , not necessarily horizontal mounted, but difficult cases.
b) Select a valve that keeps tight in both directions also at zero pressure, and without pockets where residue can gather.
c) Check how simple it is to adjust and change top seal for knife, and general maintenannce.
d) Separate supports for pipeline, no weight transferred to valve.
e) Separate support for valve, extra separate support for actuator.
f) Fork with room for movements as connection between valve-spindle and actuator not to give skew weight trasfer.
c) Use actuator with gear
d) Electric actuator with large gear excange for high start torque and easy operation absolutely recommended.
e) Proper and exact adjusting of torqe and limit switces.
f) Regular testing to full open and closed position (each third month??), greasing if necessary.

By following theese rueles yuo should avoid the most common traps.

Best Luck!

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