Y Strainers
Y Strainers
(OP)
When using a y-strainer upstream of control valves or equipment what basket perforations or mesh is typically used to remove mill slag, weld beads and other trash in carbon steel piping.
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RE: Y Strainers
Martindup
RE: Y Strainers
Here is website that has a lot of information on strainers and others.
http://www.lesliecontrols.com/Handbooks/Handbooks.html
RE: Y Strainers
There is also a theory that they should be fitted on their side which helps, but have to admit, I cannot comment on this though.
RE: Y Strainers
Agree with Unclesyd and PeteBennett that after startup and a period of initial operation that the screen can be replaced with one having larger perforations and/or removed depending on the application.
I recently specified a strainer on the inlet to a starter with a 100 mesh screen but then begin second guessing myself. One past application in particular was the fuel gas regulators to a gas turbine located a short distance downstream of a filter-separator in which weld beads caused us to have to pull and repair the regulators several times despite having blown the line "clean" with full line pressure prior to commissioning. (Yes we had a small PECO in-line filter mounted on the inlet flange to the gas turbine.)
I typically use start-up strainers on the inlet to compressors, pumps, separator liquid dump lines to name a few usually using perforated baskets or "witches' hats." Since nothing was damaged then "no news is good news" but others may have a more difinitive take on this issue which is the reason for opening this discussion.
Thanks to anyone for my future education based on their experiences.