N-valve
U-valve
Feedback side
Resting position closed
®
Resting position open
Fig.36
Fig.37
Resting position open
®
Resting position
closed
Fig.38
Fig.39
Valve side
10.8.2 Installing the Valve
Caution!
Danger of injury by spring force being released on valves with
spring-closing actuator action (valve U – spring-closing)
You can sustain injuries to your fingers when you put your hand into a valve
with spring-closing action if the valve has not been opened beforehand.
► Before screwing in the valve disk, pretension the actuator using an
emergency manual actuator (H) (material no. 221.310.74) or pressurize it
with compressed air using assembly tool HBV (material no. 221.105.99).
Maintenance
Installation
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