SPX APV DELTA DF plus 2 Operating Manual page 10

DELTA DFplus2 - UK1 / qxd.12.2004
seat lift
actuator
valve feedback
PMO
5
4. Auxiliary Equipment
Seat lift actuator
- If necessary for reasons of process technology or hygiene,
the DFplus2 valve can be equipped with a seat lift actuator.
The upper and lower valve seats can be lifted individually by the
seat lift actuator. Through the lifting of the individual valve seats
the seal surfaces and the leakage chamber are cleaned.
Valve feedback (standard)
- Switches to signal the limit position of the closed and open valve
position can be installed in the yoke area if requested.
We recommend our APV standard types.
Operating distance: 5 mm / diameter: 11 mm.
If the customer decides to use valve feedback switches other than
APV type, we cannot take over the liability for any malfunctions.
Valve feedback according to PMO
- The limit position of the upper and lower valve shafts can be
interrogated individually.
- Switches to signal the limit position can be mounted in the yoke
area or at the housing cover if requested.
The following feedback kits are available:
1. Inquiry of upper and lower valve shaft closed.
Prox. switch kit DFplus2
2. Inquiry of upper and lower valve shaft closed as well as valve open.
Prox. switch kit DFplus2
24 VDC closed
ref-No.:000 - 08 - 60 - 415/93
24 VDC closed + open
ref-No.:000 - 08 - 60 - 416/93
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
UK