Pilot-Operated Check Valve
| Controlled Port | Type | Model |
| A | Pilot -Operated | HK3H-A-Y*-025B |
| HK3H-A-Y*-03 | ||
| HK3H-A-Y*-06 | ||
| B | HK3H-B-Y*-025B | |
| HK3H-B-Y*-03 | ||
| HK3H-B-Y*-06 | ||
| A/B | HK3H-W-Y*-025B | |
| HK3H-W-Y*-03 | ||
| HK3H-W-Y*-06 |
| Controlled Port | Type | Model |
| A | Decompression | HK3H-A-W*-025B |
| HK3H-A-W*-03 | ||
| HK3H-A-W*-06 | ||
| B | HK3H-B-W*-025B | |
| HK3H-B-W*-03 | ||
| HK3H-B-W*-06 | ||
| A/B | HK3H-W-W*-025B | |
| HK3H-W-W*-03 | ||
| HK3H-W-W*-06 |