Pressure seal construction is adopted for Valves for high pressure service, typically in excess of above 170 bar. The unique feature about the pressure seal Bonnet is that the body-Bonnet joints seals improves as the internal pressure in the Valve increases, compared to other constructions where the increase in internal pressure tends to create leaks in the body-Bonnet joint.
Specifications
| Pressure-Seal Gate Valves | Pressure-Seal Y-Pattern Globe Valves | Pressure-Seal Globe Valves | Pressure-Seal Tilt Disc Check Valves | |
| Sizes, in [mm] | 2 to 36 [50 to 900] | 2 to 36 [50 to 900] | 2 to 36 [50 to 900] | 2 to 36 [50 to 900] |
| Class | 600 to 4500 | 600 to 4500 | 600 to 4500 | 600 to 4500 |
| Design | ANSI B16.34 | ANSI B16.34 | ANSI B16.34 | ANSI B16.34 |
| Ends | Raised face, ring-type joint, butt weld | Raised face, ring-type joint, butt weld | Raised face, ring-type joint, butt weld | Raised face, ring-type joint, butt weld |
| Materials | All grades | All grades | All grades | All grades |
