PondMeister Note: FVS112 and FVS200 no longer have threads for attaching. They have 1 1/2" and 2" PVC Spigot Adapters. To be used, they will need to be glued into a PVC slip fitting. In other words, the attachment part of these Foot Valve Screens are the same outside dimensions as 1 1/2" and 2" PVC pipe and must be glued into a PVC slip fitting.