User guide
26-5
Solenoid Valves, component tested
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Solenoid Valves, component tested
The 2/2-way valves of the AT-series are suitable for potable water and is not dependent operationally 
on a specific minimum differential pressure, and right through to maximum pressure.
Plug
The 2/2-way valves of the AV-series are designed for safety function in liquid fuel supply systems. The 
valves prevent unintended draining of the system and storage tanks in case of malfunction of burner 
or filter.
Plug
Solenoid valves for potable water (AT) 
Valve application liquid
Materials Casing: brass Internal parts: stainless steel Membrane: EPDM
Media temp. 0 ... 120
o
C
Ambient temperature -10 ... 55
o
C
Operating mode normally closed
Power supply 230V 50Hz
Certificates VDE-approval according EN 60730 up to 50 degree
Working range 0 ... 10 bar
DN size Kvs value Connections
Type
mm
10 1,8 G3/8
AT10
13 3,5 G1/2
AT13
20 8,6 G3/4
AT20
25 11 G1
AT25
25 11 G1 1/4
AT32
40 30 G1 1/2
AT40
40 30 G2
AT50
Device plug with LED-display for voltage 200V - 240 VAC/DC
ST221
Solenoid valves for neutral liquid medium (AV) 
Valve application fuel oil
Materials Casing: brass Internal parts: stainless steel Membrane: Viton
Media temp. 0 ... 90
o
C
Ambient temperature -10 ... 55
o
C
Operating mode normally closed
Power supply 230V 50Hz
Certificates 5S235/05 according to DIN EN 264
DN size Kvs value Working range Connections
Type
mm bar
10 1,8 -0,9 ... 4 G3/8
AV102MS2
13 3,5 -0,9 ... 4 G1/2
AV131MS2
20 8,6 -0,9 ... 10 G3/4
AV201MS2
25 11 -0,9 ... 10 G1
AV251MS2
25 11 -0,9 ... 10 G1 1/4
AV252MS2
40 30 -0,9 ... 10 G1 1/2
AV401MS2
40 30 -0,9 ... 10 G2
AV402MS2
Device plug with LED-display for voltage 200V - 240 VAC/DC
ST221










