💧 Split Nut, Waterway, 1-1/2″, with screws
Made by Waterway Plastics, manufacturer part number 400-5491.
📏 Specifications
| Specification | Value |
|---|---|
| Brand | Waterway Plastics |
| Manufacturer part number | 400-5491 |
| Catalog description | Split Nut, Waterway, 1-1/2″, with screws |
Exploded parts diagram: This part is shown as item #6 on the Waterway Above-Ground In-line Chlorinator exploded parts diagram.
🔧 Waterway Above-Ground In-line Chlorinator – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Connection Fitting Sub Assy, WW Chlorinator, 1-1/2" |
| – | Connection Pipe, Waterway, 1-1/2" mpt x 1-1/2 bt |
| 9 | Tablet Feeder, Waterway, In-Line, Above Ground, White |
| 8 | Bracket, Waterway Above-Ground In-Line Chlorinator |
| 7b | O-Ring, Viton, 7/8" ID, 3/32" Cross Section, Generic |
| 7a | O-Ring, Viton, 1-1/4" ID, 3/32" Cross Section, Generic |
| 7 | Dial Stem Assy, WW Above-Ground In-Line Chlorinator |
| 6 | Split Nut, Waterway, 1-1/2", with screws ◀ this part |
| 5 | Check Valve Assy, WW Above Ground In-Line Chlorinator |
| 4 | Elbow, 90deg, Waterway In-Line Chlorinators, 1/4 |
| 3 | Filter Screen, Waterway Above Ground In-Line Chlorinator |
| 2 | O-Ring, Viton-VT75, 4-3/8" ID, 3/16" Cross Section, Generic |
| 1 | Lid, Waterway In-Line Chlorinators |
🔧 Exploded diagram and parts
This part belongs to the Waterway Above-Ground In-line Chlorinator assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
| No. | Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|---|
| 1 | ![]() |
Lid, Waterway In-Line Chlorinators | 519-1167 | 4 in stock | $21.76 | Add to cart |
| 3 | ![]() |
Filter Screen, Waterway Above Ground In-Line Chlorinator | 519-1250 | 4 in stock | $6.45 | Add to cart |
| 4 | ![]() |
Elbow, 90deg, Waterway In-Line Chlorinators, 1/4 | 411-1170 | 1 in stock | $3.50 | Add to cart |
| 5 | ![]() |
Check Valve Assy, WW Above Ground In-Line Chlorinator | 600-1180 | 3 in stock | $11.98 | Add to cart |
| 7 | ![]() |
Dial Stem Assy, WW Above-Ground In-Line Chlorinator | 600-1207 | 4 in stock | $28.43 | Add to cart |
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Connection Fitting Sub Assy, WW Chlorinator, 1-1/2" | 400-9820 | 7 in stock | $21.16 | Add to cart | |
![]() |
Connection Pipe, Waterway, 1-1/2" mpt x 1-1/2 bt | 425-0030 | 10 in stock | $17.20 | Add to cart |
Parts that go with this
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
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Heater Split Nut | -1/2"FBT, Large Flange w/ Screws | 0121108015 | 140 in stock | $4.03 | Add to cart |
![]() |
Waterway Gasket 711-4000 | 711-4000 | 1548 in stock | $0.73 | Add to cart |
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Waterway O-Ring/Gasket 711-4050 | 711-4050 | 791 in stock | $0.78 | Add to cart |
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Silicone, DOW 732, 10.1oz Cartridge, Clear | DC-732-CLR-10.3 | 43 in stock | $28.02 | Add to cart |
![]() |
Waterway Gasket 711-0010 | 711-0010 | 168 in stock | $0.73 | Add to cart |
Commonly replaced parts
Parts commonly replaced on this item that we stock.
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
![]() |
Balboa Screw 50087 | 50087 | 124 in stock | $0.73 | Add to cart |



























