DESIGN AND FUNCTION
Series 541
8/25
Edition 2015-07-09
291187ED
3.2
Function
Valve is closed and opened manually.
Closing: Turn hexagon head or inner square clockwise to its stop. For moving the plate
only a small closing torque is required. Then a second step with a steadily increasing torque
(sealing the valve) will follow until the stop is reached.
Opening: Turn hexagon head counter clockwise to its stop. The valve is completely open
when the stop is reached.
Figure 3-2
1
FLEX VATRING
2
Bonnet seal
3
Bellows
Valve seat side
1
3
2
