Normally closed electromagnetic safety valves with quickly opening for air and non-aggressive gases (according to EN437).
General features
Voltage tolerance: -15% / +10%.
Environment temperature: -15°C / +60°C.
Closing time < 1 second.
Protection degree: IP54.
Cable gland: PG 9.
Pressure inlets: G1/4” on two sides (except models with brass body).
Gas type: Air and non-aggressive gases (EN 437).
Filter: 600 μm (except models with brass body).
Limit switch: by request from 3/4” to 4”.
Possibility to connect a pressure gauge to monitor gas pressure (except models with brass body).
Electric features
Rated voltage: 230Vac – 50/60Hz or 24Vac/dc
Upon request valves are available with coils for the following voltages:
-110V AC 50/60Hz
-24V AC/DC
-12V AC/DC
ADVANTAGES
0
Normally closed electromagnetic safety valves with quickly opening for air and non-aggressive gases (according to EN437).
Advantages
TECHNICAL SPECIFICATION
CODE
CONNECTION
TYPE
PASSAGE
DN
POWER SUPPLY
BODY
MAXIMUM
PRESSURE
Mbar
ABSORPTION
W
ZDEV10
threaded RP 3/8
10
230Vac 50/60Hz
brass
200
16
ZDEV15
threaded RP 1/2
15
230Vac 50/60Hz
brass
200
16
ZDEV20A
threaded RP 3/4
20
230Vac 50/60Hz
aluminum
500
45
ZDEV25A
threaded RP 1
25
230Vac 50/60Hz
aluminum
500
45
ZDEV32A
threaded RP 1 1/4
32
230Vac 50/60Hz
aluminum
500
20/80
ZDEV40A
threaded RP 1 1/2
40
230Vac 50/60Hz
aluminum
500
20/80
ZDEV50A
threaded RP 2
50
230Vac 50/60Hz
aluminum
500
20/80
ZDEVRF65
flanged DN 65
65
230Vac 50/60Hz
aluminum
200
45/180
ZDEVRF80
flanged DN 80
80
230Vac 50/60Hz
aluminum
200
45/180
ZDEVRF100
flanged DN 100
100
230Vac 50/60Hz
aluminum
200
45/180
ZDEV10F
threaded RP 3/8
10
24Vac
brass
200
16
ZDEV15F
threaded RP 1/2
15
24Vac
brass
200
16
ZDEV20F
threaded RP 3/4
20
24Vac
aluminum
200
45
ZDEV25F
threaded RP 1
25
24Vac
aluminum
200
45
ZDEV32F
threaded RP 1 1/4
35
24Vac
aluminum
200
20/80
ZDEV40F
threaded RP 1 1/2
40
24Vac
aluminum
200
20/80
ZDEV50F
threaded RP 2
50
24Vac
aluminum
200
20/80
ZDEVRF65F
flanged DN 65
65
24Vac
aluminum
200
45/180
ZDEVRF80F
flanged DN 80
80
24Vac
aluminum
200
45/180
ZDEVRF100F
flanged DN 100
100
24Vac
aluminum
200
45/180
HOMOLOGATION AND INSTALLATION
Homologation
Complies with 90/396/CEE (VMR-0063AQ1350), 73/23/CEE, 89/336/CEE standards
Installation and use
Check the correspondence between flow direction and the arrow printed on valve body, verify the correct alignment of connecting pipes and allow enough space from the walls to allow free air circulation. You should always install a filter before valve inlet (open <1 mm).
The valve may be mounted with coil in horizontal or vertical position. The coil may be oriented 360 degrees in any direction. Install the valve in an area protected from rain and water splashes or drops.
The flow rate is adjustable from 0 m³/h to the maximum indicated on the plate (except the models in brass and 4 “).
Remove coil fastening cap, turn on the adjustment screw under the locking dowel.
It is recommended to make the flow adjustments while the burner is in operation and when the adjustment is completed screw back the locking dowel.
Adjustments below 40% of the flow are unadvisable since they may cause turbulence.
Fast opening gas safety electromagnetic valve that is normally closed.
When it is not energized, the spring works on the shutter keeping the gas passage closed.
When the coil is feed the valve opens.
When the power supply is interrupted the valve rapidly closes.
This device is suitable for gas and air blocking and regulation commands in burners at atmospheric pressure or fan-assisted burners, in industrial ovens and in all applications which use gas solenoid valves (suitable for continuous service – 100% ED).
