veneto

My flexible supply line (83083.00.000) is leaking but I see the original model is discontinued. Can someone provide a spec for replacement. I need to know the sizing for the connector on both ends. Thanks https://terrylove.com/pdf/veneto_parts_3362.pdf

I'm trying to replace the gasket (part #7 in the diagram), which I have except cannot figure out how to remove the lower valve housing. Does it need to be rotated counter-clockwise or clockwise, or just pulled out? Seems to be stuck and I'm worried I'll break the lower plastic legs connecting...