Sanitary Wye
Sanitary Wye
(OP)
Where can I find data on pressure drop through a sanitary wye? Equivalent length or K-factor will do. Thanks. (I have already searched the forum - no luck).
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RE: Sanitary Wye
Depending on the flow direction, I would probably estimate it as a either a tee flow through a branch or a bull head tee.
RE: Sanitary Wye
RE: Sanitary Wye
I already have lots of data on regular tee fittings.
Any Euros with that data? Thanks.
RE: Sanitary Wye
If your velocity in the pipe is 1 m/s then the velocity head is 51 mm of water column. An absolute error of 0.1 in the K-value will therfore change the pressure drop by 5 mm WC. If your design is this tight then you need to determine the pressure drop experimentally for your specific geometry. If you are working with pressure drops in the range of several inches or centimetres of WC then the error is likely to be negligible.
Katmar Software - AioFlo Pipe Hydraulics
http://katmarsoftware.com
"An undefined problem has an infinite number of solutions"
RE: Sanitary Wye
Also, ASPE Tech Standard 45 "Siphonic Roff Drainage" should offer design assistance/guidance.
Some of the designs I have seen did not use sanitary wyes since siphonic drainage is a "pressure" system so using drainage fittings which assist in flow of gravity systems may not be required. Most jurisdictions require siphonic drainage to be an "engineered system" so use of drainage type fittings may not be required.
I agree with katmar that the K value will be somewhere between a bull nose tee and a 45 or 60 degree miter bend.
RE: Sanitary Wye
Katmar Software - AioFlo Pipe Hydraulics
http://katmarsoftware.com
"An undefined problem has an infinite number of solutions"