$8 valve Low-poly 3D model by a757374307. Available on CGTrader with 4254635 polys and 2736872 vertices. Check it out on CGHub.
MAX (Autodesk 3ds Max, filesize: 61.2 MB), OBJ (OBJ, filesize: 71.4 MB), FBX (Autodesk FBX, filesize: 257 MB), STL (Stereolithography, filesize: 203 MB), 3DS (3D Studio, filesize: 2.28 MB)