Hayward FLV Series Glass Filled Polypropylene #2 Bag Filter Housing, FPM Seals, PVC Socket End Connections Size:1-1/2 Inch - FLV4P2S15S1VS they feature a on-piece body

they feature a on-piece body design and a metal-to-metal disc seal

FPZ SCL K05-MS-3-115/230 NP

EPDM seats

The oil removal concept is through the collision of the oil droplet with the media surface or "adsorption" where gravity separation becomes a lesser element of oil removal in coalescing designs

Teledyne 465M Datasheet

Hayward FLV Series Glass Filled Polypropylene #2 Bag Filter Housing, FPM Seals, PVC Socket End Connections Size:1-1/2 Inch - FLV4P2S15S1VS they feature a on-piece bodyHayward FLV Series Glass Filled Polypropylene #2 Bag Filter Housing, FPM Seals, PVC Socket End Connections Features: Platinum Glass Filled Polypropylene One Piece Injection Molded Construction Hand Removable, Ergonomic Cover with Liquid Displacing Dome Vent Valve Included on Cover Simplex Rated up to 100 GPM Duplex Rated up to 150 GPM True Union Socket, Threaded or Flanged End Connections In Line or Loop Flow Configurations Double Length Solid Basket