GEM 225 DN 10, Руководство по эксплуатации

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4 Correct use
3.3.1 Valve closed
3
1
2
Fig. 1: Valve closed
The compression spring closes the pilot seat
1
. The dia-
phragm is pushed down onto the main valve seat
2
. The me-
dium flows through the control aperture
3
into the control
chamber above the diaphragm and thus increases the clos-
ing force.
3.3.2 Valve open
4
5
Fig. 2: Valve open
After applying a switching voltage the pilot spool
4
is ener-
gised. The pressure of the medium from the control chamber
reduces towards the valve outlet
5
through the open pilot
seat.
2
Fig. 3: Valve open
More medium flows away from the control chamber through
the pilot seat than can flow in through the control aperture.
The differential pressure produced lifts the diaphragm thus
opening the main valve seat
2
.
4 Correct use
DANGER
Danger of explosion
▶
Risk of severe injury or death.
●
Only versions that have been ap-
proved according to their technical
data may be used in potentially ex-
plosive environments.
WARNING
Improper use of the product
▶ Risk of severe injury or death.
▶
Manufacturer liability and guarantee will be void.
●
Only use the product in accordance with the operating
conditions specified in the contract documentation and
in this document.
The product is designed for installation in piping systems
and for controlling a working medium.
1. Use the product in accordance with the technical data.
2. Protect the product from direct weathering.