Stulz EC Tower ECD 91 - Data Sheet for Solenoid Valve

191 © STULZ GmbH – all rights reserved EN/01.2019/G22
ec tower technical manual
14.4.3 Data sheet for solenoid valve
© Danfoss | DCS (az) |2017.06
Data sheet
Assisted lift operated 2/2-way solenoid valves
Type EV250B
IC.PD.200.H7.02 | 1
• For water, oil, compressed air and similar
neutral media
• Flow range: 0.5 – 20 m
3
/h
• Differential pressure: 0 – 10 bar
• Media temperature from -30 – 140 °C
• Ambient temperature: Up to 80 °C
• Coil enclosure: Up to IP67
• Thread connections: From G ⅜ – G 1
• DN 10 – 22
• Viscosity: Up to 50 cst
• The valve can be used for rough vacuum
• Water hammer damped
EV250B with assisted lift can operate from zero
and up to 10 bar differential pressure.
This 2/2-way valve program is especially to use in
closed circuits with low differential
pressure, but demanding moderate flow rates.
Valve body in dezincification resistant brass for
ensuring a long life even in connection with
aggressive steam media.
EV250B is compatible with the broad Danfoss coil
program with enclosures from IP00 up to IP67.
Medium temperatures up to 140 °C
(low pressure
steam).
• DZR brass version in NC and NO
• Also available with NPT thread
Features and versions:
DZR brass valve body, NC
Connection
ISO228/1
Seal
lair etam Orifice size [m³/h]
k
v
- value
Dierential pressure
min. to max. [bar] / coil type
3
)
Media temperature
min. to max. [°C]
BB/BE 10W AC
BG 12 W AC
BG 20W DC
BN 20 W AC BB/BE 18W DC
4
)
EPDM
1
)
0 – 10 0 – 6
-30–140
FKM
2
) 0–100
G
1
⁄ 2 12 4
1)
EPDM is suitable for water.
-30 – 120 °C: 0 – 10 bar.
120 – 140 °C: 0 – 4 bar.
2)
FKM is suitable for oil and air. For water at max. 60 °C.
3)
Pressure range can be extended to use in rough vacuum, typically up to 99% vacuum (10 mbar), depending on the applica
tion.
4)
6 bar max. opening dierential pressure is measured at 6% undervoltage ( 22.6 V DC hot coil), 50 °C ambient and 90 °C media
temperature.
5
) In water applications, exercise the valves at least once every 24 hours, meaning change the state of the valve.
The valve exercise will minimize the risk of the valve sticking due to calcium carbonate, zinc or iron oxide build-up.