Việt Nam 
Specifications
| Model | PASSAGE | PASSAGE SIZE | THRU BORE | OVERALL DIAMETER | OVERALL LENGTH | Drawing |
|---|---|---|---|---|---|---|
| HVH-3531 | 3 | 0.750” | 0.750 | 6.438 | 9.550 |  |
| HVH-3631 | 3 | 0.875” | 0.750 | 6.438 | 10.303 | |
| HVH-3731 | 3 | 1.250” | 0.750 | 7.438 | 11.370 | |
| HVH-3831 | 3 | 1.500” | 0.750 | 8.938 | 12.293 | |
| HVH-3541 | 4 | 0.750” | 0.750 | 6.438 | 11.283 | |
| HVH-3641 | 4 | 0.875” | 0.750 | 6.438 | 12.283 | |
| HVH-3741 | 4 | 1.250” | 0.750 | 7.438 | 13.664 | |
| HVH-3841 | 4 | 1.500” | 0.750 | 8.938 | 14.878 | |