💧 Multiport Valve, Waterco Side Mount, 2″, 6 Position
Made by Waterco, manufacturer part number 2290590. It is listed for the equipment shown below, so check the model on your own unit against that list.
MPV & PIPING KIT 2.0″ SM VALVE W/ 2.0″ CONN. (WATERCO VALVE) W/ SWEEP ELBOWFits Micron SM750-SM900 8″ Neck with 2″ Connection
📏 Specifications
| Specification | Value |
|---|---|
| Brand | Waterco |
| Manufacturer part number | 2290590 |
| Mounting Style | Side Mount |
| Plumbing Connection Type | Female Buttress Thread (fbt) |
| Plumbing Connection Size | 2″ |
| Multiport Valve Complete | Complete Valve |
| Mount Information | Centerline |
| Manufacturer # | WC2290590 |
| Catalog description | Multiport Valve, Waterco Side Mount, 2″, 6 Position |
✅ Listed for
- Waterco/Baker Hydro HRV Series 1984-2009 Sand Filter
- Waterco HRV24 2021 – Present Sand Filter
Exploded parts diagrams: This part is shown as the Waterco Side Mount Multiport Valve, 2″, 2290590; the Sand Filter, Waterco, Micron Series Side Mount, SM600; the Sand Filter, Waterco, Micron Series Side Mount, SM750; the Sand Filter, Waterco, Micron Series Side Mount, SM900; the Sand Filter, Waterco HRV30, 2021 – Present; the Sand Filter, Waterco HRV18, 2021 – Present; and 1 other assembly exploded parts diagrams.
🔧 Waterco Side Mount Multiport Valve, 2", 2290590 – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Multiport Valve, Waterco Side Mount, 1-1/2", 6 Position |
| – | Multiport Valve, Waterco Side Mount, 2", 6 Position ◀ this part |
| 16A | 26-252-W003K16A |
| 16 | Half Union, 2", with O-Ring |
| 15 | Nut, Waterco SupaTuf/HydroStorm/SupaStream, 1/4-20 |
| 14 | Sight Glass, Waterco 2" Top/Side Mount Valves |
| 13 | 27-252-1190 |
| 12 | Air Release, Waterco Filter/Valve, with O-Ring |
| 11 | Gasket, Waterco 2" Top/Side Mount, 6-13/16"OD, 5 Spokes |
| 10 | Rotor, Waterco 2" Top/Side Mount Valves |
| 9 | 26-252-W003K9 |
| 8 | Spring, Waterco 2" Top/Side Mount Valves |
| 6 | O-Ring, Waterco Top/Side Mount, Cover, 7-1/4"ID, 1/8"OD |
| 5 | Cover, Waterco 2" Top/Side Mount Valves |
| 4 | Bolt, Waterco 1-1/2" and 2" Top/Side Mount Valves |
| 3 | 26-252-W003K3 |
| 2 | 27-252-1128 |
| 1 | 26-252-W003K1 |
🔧 Exploded diagram and parts
This part belongs to the Waterco Side Mount Multiport Valve, 2", 2290590 assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
| No. | Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|---|
| 4 | ![]() |
Bolt, Waterco 1-1/2" and 2" Top/Side Mount Valves | 621464 | Available to order | $3.78 | |
| 6 | ![]() |
O-Ring, Waterco Top/Side Mount, Cover, 7-1/4"ID, 1/8"OD | 30C3105 | Available to order | $18.53 | |
| 8 | ![]() |
Spring, Waterco 2" Top/Side Mount Valves | 621181 | 3 in stock | $47.68 | Add to cart |
| 9 | ![]() |
O-Ring, Waterco 2" Top/Side Mount Valves, Spring | WC621201 | Available to order | $2.10 | |
| 10 | ![]() |
Rotor, Waterco 2" Top/Side Mount Valves | 621231 | Available to order | $76.58 | |
| 11 | ![]() |
Gasket, Waterco 2" Top/Side Mount, 6-13/16"OD, 5 Spokes | 621261 | 7 in stock | $64.14 | Add to cart |
| 12 | ![]() |
Air Release, Waterco Filter/Valve, with O-Ring | 620221 | 28 in stock | $15.35 | Add to cart |
| 14 | ![]() |
Sight Glass, Waterco 2" Top/Side Mount Valves | 621381 | 2 in stock | $17.70 | Add to cart |
| 16 | ![]() |
Half Union, 2", with O-Ring | 634024BLK | 10 in stock | $34.69 | Add to cart |
Parts that go with this
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
![]() |
Gasket, Waterco Top/Side Mount, Spring, 1"ID, 1-11/16"OD | 621455 | Available to order | $11.70 | |
![]() |
Backwash Hose, Valterra, 2" x 50 foot Roll, with Clamp | B8258 | 27 in stock | $42.98 | Add to cart |































