Loading of Valve | ||
Load Steps | Pressure Run | Remarks |
Step 1 | Pre-tension load in valve thread, (pressure = 0.0 MPa) | One event |
Step 2 | Autofrettage pressure applied (650 - 1425 MPa) | One event |
Step 2 | Min pressure cycle (0.875 MPa) | Pressure cycle |
Step 3 | Max pressure cycle (87.5 MPa) | |
Step 4 | Min pressure cycle (0.875 MPa) |