Patent ID: 11885436
Assignee: EBM PAPST LANDSHUT GMBH
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 8:
9. A method for monitoring the coaxial dual-safety valve of the valve monitoring system according to claim 1, wherein, after the completion of the gas request in the course of the heat request to the gas valve unit, the method runs through the steps:
i. the control valve is brought into the closed position and blocks the heretofore open gas path in the gas valve unit,
ii. the first and the second pilot valves are brought into the closed position,
iii. the control valve is brought back into the open position,
iv. the switching pressure in the fluid space is checked and, for the tightness check of the second pilot valve, is compared with a pressure threshold valve,
v. the second pilot valve is brought into the open position for the at least partial degassing into the open position, while the first pilot valve remains in the closed position,
vi. the switching pressure in the fluid space is checked and, for the tightness check of the first pilot valve, is compared with a pressure threshold value.