temporary Strainer gap post flush

[pipe15]

good afternoon, I am wondering if there is a standard practice for flanged, cone type, temporary strainers for when they are removed post flush. Is the strainer replaced with a spacer and the two gaskets or perhaps is there a thicker gasket which would fill the resulting gap?
thanks
Mark

 

[KevinNZ]

A thicker gasket could be a big mistake. A thicker gasket may not have the shear strength required for your line pressure. If the piping is flexible then you maybe able to pull the gap with a normal gasket, otherwise a spacer and two gaskets is the way to go. Make sure you have the correct gasket faces on your spacer.

 

[pipe15]

thanks, I agree that the gripping strength of the facing is always a consideration!

 

[LittleInch]

Unless the pipe is particularly rigid, I'm having difficult working out why you need to do this?

Granted if the strainer is actually an RTJ solid disc, then use a spacer, but many are just 2mmthick.

Given you have to remove the pipework to remove these sorts of filters, it's all fairly loose so is there a reason you can't find an extra 5mm??

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[pipe15]

thanks little inch. we have to follow a pipe fab spec that precludes springing the pipe into place, regardless of the magnitude.

 

[LittleInch]

How much distance are talking about?

"flanged" is a bit vague. May are just thin metal, some are proper spacers. Which is yours?

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Also: If you get a response it's polite to respond to it.

 

[pipe15]

the difference in the gap would be a max of ~0.25".

 

[LittleInch]

Your SOP though seems to be fixed - "we have to follow a pipe fab spec that precludes springing the pipe into place, regardless of the magnitude"

I don't think this is really "springing" but if it is then introduce a ring and use two gaskets.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[maxdistortion]

We do both too, if it won't make it difficult to get pump alignment again we suck the pipe together, otherwise it gets a spacer.