Fixed Trunnion Ball Valve Seat Seal Pressure (DBB/DIB) Calculator

DBB/DIB (double block & bleed / double isolation & bleed) seat sealing specific pressure verification at high pressure condition

Input Parameters

Design Pressure P (high cond.) MPa

Seat Loop Outside Dia DJH mm

Seal Inside Dia DMN mm

Seal Outside Dia DMW mm

Ball Radius R mm

Seal Projection Width h mm

Contact Angle α deg

Material Coefficient C -

Pressure Coefficient K -

Spring Total Force Fn N

Allowable Pressure [q] MPa