| VIVA21 5-Stage Reverse Osmosis Filtration System | WQA Gold Seal Certified | filterunited.com | 199.99 USD | 289.99 USD | −31% |
| VIVA21 6-Stage Alkaline Remineralization Reverse Osmosis Filtration System | WQA Gold Seal Certified | filterunited.com | 249.99 USD | 339.99 USD | −26.5% |
| 4 Gallon Reverse Osmosis Water Tank | filterunited.com | 59.99 USD | — | — |
| 3 Gallon Reverse Osmosis Water Tank | filterunited.com | 49.99 USD | — | — |
| Ice Maker Kit 1/4" RO System to Refrigerator Quick Connect | filterunited.com | 29 USD | — | — |
| Ice Maker Kit 3/8" RO System to Refrigerator Quick Connect | filterunited.com | 29 USD | — | — |
| O-Ring Set for RO Housings - 7 Pieces | filterunited.com | 19.99 USD | — | — |
| Wrench Set For Filter Housing & Membrane Housing | filterunited.com | 15 USD | — | — |
| ASO Valve (Auto Shut Off Valve) Quick Connect | filterunited.com | 15 USD | — | — |
| Drain Saddle Quick Connect 1/4" | filterunited.com | 12 USD | — | — |
| Feed Water Valve Compatible both 1/4" and 3/8" Quick Connect | filterunited.com | 12 USD | — | — |
| Check Valve 1/4" Quick Connect | filterunited.com | 10 USD | — | — |
| Tank Ball Valve 1/4" Quick Connect | filterunited.com | 9 USD | — | — |
| Tank Ball Valve 3/8" Quick Connect | filterunited.com | 9 USD | — | — |
| Ball Valve - 3/8" OD x 1/4" OD | filterunited.com | 8 USD | — | — |
| Ball Valve 1/4" Quick Connect | filterunited.com | 8 USD | — | — |
| Ball Valve - 1/4" OD x 1/4" NPTF | filterunited.com | 7 USD | — | — |
| Union Tee - 3/8" OD x 1/4" OD x 3/8" OD | filterunited.com | 6 USD | — | — |
| Male Run Tee - 3/8" OD * 3/8" OD * 3/8" NPT | filterunited.com | 6 USD | — | — |
| Male Run Tee - 3/8" OD x 1/4" OD x 1/4" NPT | filterunited.com | 6 USD | — | — |
| Union Connector - 3/8" OD x 3/8" OD | filterunited.com | 6 USD | — | — |
| Male Connector - 3/8" OD x 3/8" NPT | filterunited.com | 5 USD | — | — |
| Stem Run Tees - 3/8" Stem x 3/8" OD x 3/8" OD | filterunited.com | 5 USD | — | — |
| Male Branch Tee - 3/8" OD x 3/8" NPT x 3/8" OD | filterunited.com | 5 USD | — | — |
| Two Way Divider - 1/4" OD x 1/4" OD x 1/4" OD | filterunited.com | 5 USD | — | — |
| Two Way Divider - 3/8" OD x 3/8" OD x 3/8" OD | filterunited.com | 5 USD | — | — |
| Male Connector - 1/4"OD x 1/4" NPT | filterunited.com | 5 USD | — | — |
| Stem Branch Tees - 1/4" OD x 1/4" Stem x 1/4" OD | filterunited.com | 5 USD | — | — |
| Stem Branch Tees - 3/8" OD x 3/8" Stem x 3/8" OD | filterunited.com | 5 USD | — | — |
| Union Tee - 3/8" OD x 3/8" OD x 3/8" OD | filterunited.com | 5 USD | — | — |
| Male Elbows - 3/8" OD x 1/2" NPT | filterunited.com | 4 USD | — | — |
| Male Elbows - 3/8" OD x 3/8" NPT | filterunited.com | 4 USD | — | — |
| Stem Elbow - 1/4" OD x 1/4" Stem | filterunited.com | 4 USD | — | — |
| Stem Elbow - 3/8" OD x 3/8" Stem | filterunited.com | 4 USD | — | — |
| Union and Reducing Elbows - 1/4" OD x 1/4" OD | filterunited.com | 4 USD | — | — |
| Union Tee - 1/4" OD x 1/4" OD x 1/4" OD | filterunited.com | 4 USD | — | — |
| Union Tee - 1/4" OD x 3/8" OD x 1/4" OD | filterunited.com | 4 USD | — | — |
| Male Elbows - 3/8" OD x 1/4" NPT | filterunited.com | 4 USD | — | — |