The JFD interlock is designed to prevent the doors of medical, equipment, or transfer locks being opened whilst under pressure.
This interlock is very simple to operate. As the chamber is pressurised, the interlock mechanically locks the bolt in the extended position. The interlock bolt cannot be retracted until the chamber pressure is less than 1psi.
When the bolt is in the retracted position the gas supply to the chamber is isolated and the chamber cannot be pressurised.
When the bolt is retracted the chamber is vented through the interlock vent ports, this ensures that the chamber cannot be pressurised from another source. This facility also allows the interlock to be used in a vent only configuration, in which case port B would be plugged.
Further Information
| Item | Order Code |
| Interlock | DC0300AA |
| Spares kit for interlock | DC0300202 |
| Interlock DNV approved | DC0300DA |
| Interlock Lloyds approved | DC0300LA |
Design and operational notes
Interlock bolt cannot be retracted with port pressure above 1psi.
Pressure ratings
| Maximum working pressure | 45 bar |
| Design pressure | 49.5 bar |
| Hydrostatic test pressure | 68 bar |
| Design temperature | -20oC to +50oC |
Bolt and bolt stroke can be any practical length. (By changing interlock bolt only). Interlock can lock in any attitude.
| Document | Document Type |
| Divex interlock | Datasheet |
| Type DC0300** interlock variants | Operations and maintenance |
| Interlock assembly, sliding bolt, general arrangement | Drawing |
| Interlock standard, medical / equipment / transfer lock | Drawing |
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