💧 Sight Glass, Waterco 1-1/2″ Top/Side Mount Valves
Made by Waterco, manufacturer part number 621463.
📏 Specifications
| Specification | Value |
|---|---|
| Brand | Waterco |
| Manufacturer part number | 621463 |
| Mounting Style | Side Mount, Top Mount |
| Plumbing Connection Size | 1-1/2″ |
| Valve Part Type | Sight Glass |
| Catalog description | Sight Glass, Waterco 1-1/2″ Top/Side Mount Valves |
Exploded parts diagrams: This part is shown as item #15 on the Waterco Top Mount Multiport Valve – 1-1/2″ Model; item #17 on the Waterco 6-Way TM Multiport Valve – 1-1/2″, 228042 exploded parts diagrams.
🔧 Waterco Top Mount Multiport Valve – 1-1/2" Model – 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 Top Mount, 1-1/2"fpt/b, 6 Position |
| – | Multiport Valve, Waterco Top Mount,1-1/2"fpt, Clamp-On,6 Pos |
| – | Multiport Valve, Waterco Top Mount, 1-1/2", 6 Pos, w/Unions |
| 19 | Half Union, 1-1/2", with O-Ring |
| 18 | Cover Nut, Waterco 1-1/2" Top/Side Mount Valves |
| 17 | 26-252-W005K17 |
| 16 | O-Ring, Buna-N, 5-3/4" ID, 3/16" Cross Section, Generic |
| 15 | Sight Glass, Waterco 1-1/2" Top/Side Mount Valves ◀ this part |
| 14 | O-Ring, Buna-N, 7/8" ID, 3/32" Cross Section, Generic |
| 13 | Air Release, Waterco Filter/Valve, with O-Ring |
| 12 | 27-252-1198 |
| 11 | Gasket, Waterco 1-1/2" Top/Side Mount, 5-9/16"OD, 5 Spokes |
| 10 | Rotor, Waterco 1-1/2" Top/Side Mount Valves |
| 9 | O-Ring, 1" ID, 1/8" Cross Section, Generic |
| 8 | Spring, Waterco 1-1/2" Top/Side Mount Valves |
| 7 | Gasket, Waterco Top/Side Mount, Spring, 1"ID, 1-11/16"OD |
| 6 | Bolt, Waterco 1-1/2" and 2" Top/Side Mount Valves |
| 5 | Square Ring, Waterco Top/Side Mount Valve, Cover |
| 4 | Cover, Waterco 1-1/2" Top/Side Mount Valves |
| 3 | PTFE Ring, Waterco 1-1/2" and 2" Top/Side Mount Valves |
| 2 | 27-252-1128 |
| 1 | Handle, Waterco 1-1/2" and 2" Top/Side Mount Valves |
🔧 Exploded diagram and parts
This part belongs to the Waterco Top Mount Multiport Valve – 1-1/2" Model assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
| No. | Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|---|
| 4 | ![]() |
Cover, Waterco 1-1/2" Top/Side Mount Valves | 621453 | Available to order | $24.40 | |
| 5 | ![]() |
Square Ring, Waterco Top/Side Mount Valve, Cover | 621454 | 3 in stock | $22.79 | Add to cart |
| 6 | ![]() |
Bolt, Waterco 1-1/2" and 2" Top/Side Mount Valves | 621464 | Available to order | $3.78 | |
| 7 | ![]() |
Gasket, Waterco Top/Side Mount, Spring, 1"ID, 1-11/16"OD | 621455 | Available to order | $11.70 | |
| 8 | ![]() |
Spring, Waterco 1-1/2" Top/Side Mount Valves | 621456 | Available to order | $46.50 | |
| 10 | ![]() |
Rotor, Waterco 1-1/2" Top/Side Mount Valves | 621458 | 1 in stock | $88.41 | Add to cart |
| 11 | ![]() |
Gasket, Waterco 1-1/2" Top/Side Mount, 5-9/16"OD, 5 Spokes | 621460 | 16 in stock | $67.15 | Add to cart |
| 13 | ![]() |
Air Release, Waterco Filter/Valve, with O-Ring | 620221 | 28 in stock | $15.35 | Add to cart |
| 19 | ![]() |
Half Union, 1-1/2", with O-Ring | 122243B | 35 in stock | $24.56 | Add to cart |
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