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Sealing :
- Low pressure Service (1000 to 2000 PSI Range), the spherical surface of the male sub and the cone shaped surface of the female provide a metal-to-metal seal.
- Medium Pressure Service (2000 to 4000 PSI Range), the metal-to-metal seal is supplemented with a resilient seal ring.
- High Pressure Service (6000 to 9000 PSI Range), A replaceable, lip type seal ring is part of the female sub. This seal ring reduces flow turbulence and protects the metal-to-metal seal from corrosion.
Indicates different Cold Working Pressure due to other design factor - Difference as shown below :
- 5", 6" 12" : Figure 400, Cold Working Pressure 2,500 PSI & Test Pressure 4,000 PSI
- 5", 6" : Figure 1002 Butt weld, Cold Working Pressure 7,500 PSI & Test Pressure 11,250 PSI Std. Service
- 4", 5" : Figure 1003 Butt weld, Cold Working Pressure 7,500 PSI & Test Pressure 11,250 PSI Std. Service
- 5", 6" : Figure 1002 Butt weld, Cold Working Pressure 5,000 PSI & Test Pressure 7,500 PSI Sour Service
- 4", 5" : Figure 1003 Butt weld, Cold Working Pressure 5,000 PSI & Test Pressure 7,500 PSI Sour Service
- 1/2" : Figure 300, cold working pressure 15,000 PSI & Test Pressure 20,000 PSI
