Masoneilan 77-6/77-60 Air Lock-Up Valve
The Model 77-8 three-way transfer valve is used alone or
Air lock valve position holding means is a pneumatic instrument cluster One of the shop assistant units. When the instrument air source system fails, the lock valve can automatically cut off the passage between the regulator and the valve, keeping the valve in the original position, and the process will proceed normally until the air source failure is eliminated, and normal operation will be restored. Therefore, the pneumatic lock valve is suitable for important automatic control circuits as a safety protection position.