The F-450 spare parts recommended are listed below:
F-450 (In-Line) Replacement Parts
| ITEM NO. | PART NUMBER | DESCRIPTION | QTY |
| 1 | F-45011N-2 | 3/8” Female NPT in-line adapter, Polypropylene | 2 |
| F-45N013 | 1/2” Male NPT in-line, Polysulfone | 2 | |
| F-44N09 | 3/4” Male NPT in-line, Polysulfone | 2 | |
| 2 | F-44N06 | 3/4” Half Union, Nylon | 2 |
| 4 | 90003-082 | 3/4” O-ring seal, Viton | 2 |
| 90003-039 | 3/4” O-ring seal, EP | 2 | |
| 5 | N/A | Meterbody and Float (not sold separately) | 1 |
| 6 | F-45N005 | F-45375, F-45376, F-45500 Guide Rod, 316 SS | 1 |
| F-45N021 | F-45750 Guide Rod, 316 SS | 1 | |
| 7 | F-45N019 | Guide Rod holder, Polysulfone | 2 |
| 11 | F-45N043 | Indicator, Red | 1 |
F-450E (Elbow Panel Mount) Replacement Parts
| ITEM NO. | PART NUMBER | DESCRIPTION | QTY |
| 1 | F-44N41 | 3/8” Male NPT 90o Elbow, Polysulfone | 2 |
| F-44N42 | 1/2” Male NPT 90o Elbow, Polysulfone | 2 | |
| F-44N21 | 3/4” Male NPT 90o Elbow, Polysulfone | 2 | |
| 2 | F-44N06 | 3/4” Half Union, Nylon | 2 |
| 3 | F-4427A | 3/8” and 1/2” Panel mount lock nut | |
| F-4428A | 3/4” Panel mount lock nut | ||
| 4 | 90003-082 | 3/4” O-ring seal, Viton | 2 |
| 90003-039 | 3/4” O-ring seal, EP | 2 | |
| 5 | N/A | Meterbody and Float (not sold separately) | 1 |
| 6 | F-45N005 | F-45375, F-45376, F-45500 Guide Rod 316 SS | 1 |
| F-45N021 | F-45750 Guide Rod, 316 SS | 1 | |
| 7 | F-45N019 | 3/4” Guide Rod Holder | 2 |
| 11 | F-45N043 | Indicator, Red | 1 |
F-450A (Adjustable Panel Mount) Replacement Parts
| ITEM NO. | PART NUMBER | DESCRIPTION | QTY |
| 1 | F-44N41 | 3/8” Male NPT 90o Elbow, Polysulfone | 1 |
| F-44N42 | 1/2” Male NPT 90o Elbow, Polysulfone | 1 | |
| F-44N21 | 3/4” Male NPT 90o Elbow, Polysulfone | 1 | |
| 2 | F-44N06 | 3/4” Half Union, Nylon | 1 |
| 3 | F-4427A | 3/8” and 1/2” Panel mount lock nut, PP | 1 |
| F-4428A | 3/4” Panel mount lock nut, PP | 1 | |
| 4 | 90003-082 | 3/4” O-ring seal, Viton | 2 |
| 90003-039 | 3/4” O-ring seal, EP | 2 | |
| 5 | N/A | Meterbody and Float (not sold separately) | 1 |
| 6 | F-45N005 | F-45375, F-45376, F-45500 Guide Rod 316 SS | 1 |
| F-45N021 | F-45750 Guide Rod, 316 SS | 1 | |
| 7 | F-45N019 | Guide Rod holder, Polysulfone | 2 |
| 8 | F-45N031-1 | 3/8” M/NPT Needle Valve Assy, large, Polysulfone/Polypropylene, Viton | 1 |
| F-45N031-2 | 1/2” M/NPT Needle Valve Assy, large, Polysulfone/Polypropylene, Viton | 1 | |
| F-45N031-3 | 3/4” M/NPT Needle Valve Assy, large, Polysulfone/Polypropylene, Viton | 1 | |
| 9 | 90003-010 | O-ring, Viton | 2 |
| 90003-597 | O-ring, EP | 2 | |
| 10 | 90003-071 | O-ring, Viton | 1 |
| 90003-018 | O-ring, Ep | 1 | |
| 11 | F-45N043 | Indicator, Red | 1 |
