Thingiverse
Reverse Osmosis Diaphragm Plunger for Whirlpool WHER25 by SunnyJames
by Thingiverse
Last crawled date: 4 years, 5 months ago
My Whirlpool Referse Osmosis system has a plastic plunger used for auto-shut-off. Years ago, I purchases a replacement plunger which also eventually failed (cracked into multiple pieces). This 3d printed replacement part has been in operation in our system for more than a year without issue.
Print using Food Grade PLA and sanitize before installing. I used RAPTOR Series Black PLA which has FDA approval for food contact and prints at 245F. Depending on your printer (and whether the final part has seams or small nubs, the part may require light sanding to ensure perfect fit as the plunger must travel freely for proper operation.
Food Grade PLA:https://www.makergeeks.com/collections/raptor-series-pla/products/raptor-series-pla-high-performance-3d-filament-true-black-175mm-1kg
Print using Food Grade PLA and sanitize before installing. I used RAPTOR Series Black PLA which has FDA approval for food contact and prints at 245F. Depending on your printer (and whether the final part has seams or small nubs, the part may require light sanding to ensure perfect fit as the plunger must travel freely for proper operation.
Food Grade PLA:https://www.makergeeks.com/collections/raptor-series-pla/products/raptor-series-pla-high-performance-3d-filament-true-black-175mm-1kg