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Solenoid safety valves
321 H types
Application
: safety shut-off valve as
rapid action device. Used as well in
connection with atomizing oil burners
according to DIN 4787 and oil firing
systems with steam boilers according
to TRD 411. A strainer must be con-
nected.
Type:
2/2 pre-controlled, closed when de-
energized.
121 G types
Application:
safety shut-off valve as
rapid action device for use in return
pipes of atomizing oil burners accor-
ding to DIN 4787 and TRD 411. With
regard to current standards this valve
must be connected in series with the
valve mounted in the supply line
(please refer to the schematic dra-
wing).
Type:
2/2 directly controlled, closed when de-
energized by spring force.
When the solenoid valve is de-energi-
zed the return line medium pressure
(against arrow direction) still opens the
valve seat until 0,15 bar.
arrow stamped on
the valve body
