Strainer for gas service 2

[engrom]

Friends & experts, pls help: 1" CS (150# class - DP: 1900kPa) instrument gas strainer need to be replaced, what would be the best option of strainers (preferably flange-flange type) available? Pls advise on any website to gather more info on product models. Whether 'Y'-type strainers could be used for gas service? Is any other type which is more reliable? Not able to retrieve model/tag info from existing strainer and believe these models should be obsolete by now.

 

[jte]

Hayward Industrial has a good web site for strainers:

http://www.haywardindustrial.com/html/prods/toc.asp?TLDID=1

jt

 

[engrom]

thx jte, helpful site...let's hope more replies from our forum friends

 

[1969grad]

1. A y strainer should work unless you have a big dirt load in which case you would need a basket strainer.

2. End connections are a function of the piping design and has no impact on dirt removal. FYI, piping sizes less than 2" normally have NPT ends but flanged end models are available although maybe not as quick a delivery. Flanged ends will also have a higher total cost.

3. Something I have struggled with is the mesh size. I have finally decided that a 100 mesh screen is a resonable choice but am open to discussion by others on this forum.

4. If the service is instrument air then a filter would be a better choice unless the strainer is upstream of a filter. IA lines generally require that smaller particles be filtered than can be done with a strainer.

 

[engrom]

1969grad, thx for ur valuable post. System is power gas/instrument gas and existing strainer is with NPT ends. But, we feel flanged types would be better due to maintenance ease on inlet/outlet DN25 pipework. Probably, looking at straining capacity of 1micron & more. Y type & Hayward basket type strainers suggested to be used for liquid pipeline services. Do you have any experience with these types of strainers? What are the other available make/models which could be appropriate? Thanks again.

 

[1969grad]

Try Mueller. We generally end up with either a Mueller or Hayward for small size strainers.

BTW, you cannot remove dirt down to 1 micron with a strainer. You have to use a filter.

For small filters, take a look at Peco.