Hi,

I'm looking to do some maintenance on some duo 2.5s we have, and the exhaust ports that came with the pumps seem to be specialty, they're threaded male to fit to pump, then have internal threads (3/8" bsp female) to fit an agilent oil mist filter (G1099-80039).

I'm looking to get a standard DN16 ISO KF flange but no idea what threads the pump has. Any ideas? Thank you.