 |
 |
Special Characteristics
- Lightweight
- Compact
- Economical
- Easily installed
- Tight shut-off (resilient seat)
- Anti-slam
- Complies fully with API 594 except face to face
- Suitable for all common flanges
| Model | 717 | 727 | 747 |
|---|---|---|---|
| Body | Bronze | Steel | 316 S.S. |
| Plates | Bronze | 316 S.S. | 316 S.S. |
| Pins | Monel | 316 S.S. | 316 S.S. |
| Retainers | Monel | 316 S.S. | 316 S.S. |
| Spring | Inconel-X | Suffix 'X' | Suffix 'S' |
| Seat | Metal | Suffix 'M' | |
| Viton | Suffix 'B' | ||
| Buna. N | Suffix 'V' |