Part For 475 NDS Backwater Valve 3D Printer Model
The file 'Part For 475 NDS Backwater Valve 3D Printer Model' is (stl,f3d) file type, size is 199.3KB.
The file 'Part For 475 NDS Backwater Valve 3D Printer Model' is (stl,f3d) file type, size is 199.3KB.
I have an old (from the 80s) NDS backwater prevention device where the hanger part (blue part in photos) broke. I looked everywhere online and couldn't find a replacement part anywhere. The company had parts for the newer models but I couldn't locate the part anywhere - if you have a source please drop a note in the comments.
My unit is an NDS 475 (4" pipe) but I believe the part is the same on the 275, 375 and 675 models - not 100% sure though. I've included a picture of the access port for the unit, which I believe is unique to this generation of units. It has two tabs on the top - one of mine is broken off. The flap also has a distinct cylinder on the flap.
In order to maximize strength I printed the arms and back separately - both lying flat on their backs with no supports. I then used 3mm threaded inserts and screws/bolts to attach the two parts together. I printed in ABS with 4 or 5 walls and 90% infill. The part feels quite strong and I'm comfortable that it will hold up.
I've included the Fusion 360 file.
| Arms.stl | 68.4KB | |
| Back.stl | 61.6KB | |
| Combined.stl | 38.2KB | |
| PartForSewer.f3d | 168.8KB |
