Outside diameter: 2.25”
Inside diameter: 1.5”
Exploded parts diagram: This part is shown as item #9 on the Pentair Return Line Check Valve exploded parts diagram.
🔧 Pentair Return Line Check Valve – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Check Valve, Spring, Return Line, 1-1/2" Male Pipe Thread |
| – | Check Valve, Spring, Return Line, 1-1/2" Slip |
| 11 | Housing, Pentair Sch 40/Return Line Check Valve, w/O-Ring |
| 10 | Eyeball Assembly, Pentair Return Line Check Valve |
| 9 | Screw Cover, Pentair Return Line Check Valve ◀ this part |
| 8 | Washer, Pentair Sch 40/Return Line Check Valve, White |
| 7 | Rubber Pad, Pentair Sch 40/Return Line Check Valve |
| 6 | 27-110-1838 |
| 5 | Ball, Pentair Return Line Check Valve |
| 4 | O-Ring, 1-5/8" ID, 3/32"Cross Section,Generic |
| 3 | Spring,Pent Ortega Equalizer/Sch 40/Return Line Check Valves |
| 2 | Nut,Pent Ortega Equalizer/Return Line Check Valve,Brass 8-32 |
| 1 | Eyeball Housing, Pentair Return Line Check Valve, 1-1/2" |













