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HIGH PRESSURE FILTER

HIGH PRESSURE FILTER

(OP)
Dear All,

I've a problem. The supplier has an absolute NPT fitting for the port and now they giving me new spec for a Pall high pressure filter with new port option which is 1 1/2” SAE J514 straight thread (where we requested for Flanged SAE J518c-code 62 - see attachment).

Our system pressure is 3000 psi, but when i checked the SAE J514, it is only rated to 2000 psi.
I just wonder if it is ok? I've asked Pall but they are very slow. I'm also asking from different supplier now for alternative.

Please advice.

RE: HIGH PRESSURE FILTER

SAE J514 is the hydraulic tube fitting specification which spans SAE-ORB and pipe fittings. Assuming the port on the filter could possibly be an SAE J1926-1 straight thread o-ring port since they specifically call out straight thread and not pipe thread. Since your port size is 1-1/2 inches this equates to a dash 24 fitting size. Looking in a Parker fitting catalog with an 24 F5OX straight thread connector 37deg flare to SAE-ORB shows a dynamic pressure rating of 3000 psi.
Viewing your catalog information I see that the port is spot faced which is typical of an SAE J1926-1 port, though this may not be the case and they are using a stock photo of the filter.
Verify with the filter supplier if it is an SAE J1926-1 port or an NPTF-Dryseal American Standard Taper Pipe SAE J476 port. This will then allow you to determine the allowable pressure at the port. From this you can then look in a hydraulic fitting catalog and determine the allowable pressure on the fitting and port.

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