This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 Bell siphon with improvements implementas by Affnan aquaponista, Malaysia. This has the siphon part of drain a reduction of 2: 1 in this case a 50 x 25 mm.