💧 Lock Ring, Waterway Pro Clean Plus (Boxed)
Made by Waterway Plastics, manufacturer part number 550-0701B.
📏 Specifications
| Specification | Value |
|---|---|
| Brand | Waterway Plastics |
| Manufacturer part number | 550-0701B |
| Catalog description | Lock Ring, Waterway Pro Clean Plus (Boxed) |
Exploded parts diagrams: This part is shown as item #3 on the Cartridge Filter, Waterway, Pro Clean Plus; the Cartridge Filter, Waterway, Pro Clean exploded parts diagrams.
🔧 Cartridge Filter, Waterway, Pro Clean Plus – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Reducer, Waterway, 2" to 1-1/2" |
| – | Air Relief Valve, Waterway ProClean Plus, w/ O-Ring |
| – | Union Complete, 2 Pack, WW ProClean, 2-1/2" x 2" TP,w/Gskt |
| – | _PCCF-200 |
| – | _PCCF-175 |
| – | Pro-Clean2 150Sf Cartridge Filter |
| – | Pro-Clean2 125Sf Cartridge Filter |
| – | Pro-Clean2 75Sf Cartridge Filter |
| – | Pro-Clean2 100Sf Cartridge Filter |
| 7 | Drain Cap Assembly, Waterway Pro Clean Plus |
| 6f | 16-270-W020K6F |
| 6e | 16-270-W020K6E |
| 6d | 16-270-W020K6D |
| 6c | 16-270-W020K6C |
| 6b | 16-270-W020K6B |
| 6a | 16-270-W020K6A |
| 5 | Filter Screen, Waterway Clearwater II, with Clamp |
| 4 | 16-270-W020K4 |
| 3 | Lock Ring, Waterway Pro Clean Plus (Boxed) ◀ this part |
| 2 | Tank Body, Waterway Pro Clean Plus, w/ Lock Ring |
| 1 | 16-270-W020K1 |
🔧 Exploded diagram and parts
This part belongs to the Cartridge Filter, Waterway, Pro Clean assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
| No. | Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|---|
| 5 | ![]() |
Diverter, Waterway Pro Clean | 519-0221 | 9 in stock | $8.61 | Add to cart |
| 6 | ![]() |
Drain Cap, Waterway Pro Clean | 550-0240 | 12 in stock | $6.94 | Add to cart |
| 8 | ![]() |
Bleed Tube, Waterway Pro Clean 75/100 sqft, 1/4" x 21" | 872-4000E | Available to order | $2.72 | |
| 8 | ![]() |
Bleed Tube, Waterway Pro Clean 175/200 sqft, 1/4" x 30" | 872-4000F | Available to order | $7.27 | |
| 9 | ![]() |
Air Release Valve, Waterway Pro Clean, with O-Ring | 600-0200 | 24 in stock | $9.57 | Add to cart |


















