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- This valve may be used either normally open or normally closed.
- Normally closed: pressure inlet port 1 (P).
- Normally open: pressure inlet port 3 (R).
- A signal arriving at 12 (Z) switches the flow of the valve from 1 (P) to 2 (A) and closes port 3 (R) after the set time has expired.
- Instead of supplying main pressure to either port 1 or 3, the branched signal line can be connected to 1 or 3.
- The signal line to port 1 or 3 must not be longer than the signal line to port 12.