💧 Cartridge Joiner, Waterco Ful-Flo
Made by Waterco, manufacturer part number WCW02588. If your old part carries one of the cross-reference numbers further down, this is listed as its alternative.
📏 Specifications
| Specification | Value |
|---|---|
| Brand | Waterco |
| Manufacturer part number | WCW02588 |
| Catalog description | Cartridge Joiner, Waterco Ful-Flo |
🔄 Cross-reference part numbers
These part numbers are listed as alternatives for this part.
| Brand | Part number |
|---|---|
| Jandy/Laars/Zodiac | R0352400 |
Exploded parts diagram: This part is shown as item #7 on the Cartridge Filter, Waterco, Ful-Flo 200, 300 & 400 Sqft exploded parts diagram.
🔧 Cartridge Filter, Waterco, Ful-Flo 200, 300 & 400 Sqft – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Knob, Waterco FulFlo/MultiCyclone, Cartridge Filter |
| 18 | O-Ring, 2-3/8" ID, 3/16" Cross Section, Generic |
| 17 | Union Barrel, Waterco Ful-Flo, 2" Slip |
| 16 | Tank Base, Waterco Ful-Flo |
| 15 | Outlet Elbow, Waterco Ful-Flo, 2" |
| 13 | Cartridge Adapter, Waterco Ful-Flo, Bottom |
| 12 | Tank Body, Waterco Ful-Flo |
| 11 | Inlet Baffle, Waterco Ful-Flo |
| 10 | O-Ring, Waterco Ful-Flo, Tank Body |
| 9 | Spacer, Waterco Ful-Flo |
| 7 | Cartridge Joiner, Waterco Ful-Flo ◀ this part |
| 6A | 16-252-W003K6A |
| 6 | Cartridge, 100sqft,3-1/16"ot, 3-1/16"ob, 12-1/16",8-1/2" 4oz |
| 5a | Clamp Ring, Waterco Ful-Flo |
| 5 | Clamp Ring Knob, Waterco Ful-Flo, with Bolt |
| 4 | 16-252-W003K4 |
| 3 | 16-252-W003K3 |
| 2 | Air Release, Waterco Filter/Valve, with O-Ring |
| 1 | Pressure Gauge, 1/4"mpt, 0-60psi, Bottom Mount, Generic |
🔧 Exploded diagram and parts
This part belongs to the Cartridge Filter, Waterco, Ful-Flo 200, 300 & 400 Sqft assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
| No. | Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|---|
| 1 | ![]() |
Pressure Gauge, 1/4"mpt, 0-60psi, Bottom Mount, Generic | IPG602-4LNL | 265 in stock | $8.72 | Add to cart |
| 2 | ![]() |
Air Release, Waterco Filter/Valve, with O-Ring | 620221 | 28 in stock | $15.35 | Add to cart |
| 3 | ![]() |
Cartridge Adapter, Waterco Ful-Flo, Top | 8223501 | 1 in stock | $4.38 | Add to cart |
| 5 | ![]() |
Clamp Ring Knob, Waterco Ful-Flo, with Bolt | 62203 | Available to order | $94.09 | |
| 6A | ![]() |
Cartridge, 200sqft, 3-1/16"ot, 3-1/16"ob, 12-1/16", 17" 4oz | FC-0840 | 1 in stock | $197.89 | Add to cart |
| 9 | ![]() |
Spacer, Waterco Ful-Flo | 62236 | 4 in stock | $28.98 | Add to cart |
| 12 | ![]() |
Tank Body, Waterco Ful-Flo | 822343PEW | Available to order | $450.64 |













