Alco Controls

Electrical Control Valves Series EX4, EX5, EX6, EX7, EX8
Technical Data
Compatibility * HCFCs, HFCs, mineral Protection accordance to EX4/EX5/EX6/EX7: IP68 with Alco
MOPD (maximum operating EX4/EX5/EX6/EX7: 35 bar
and POE lubricants IEC 529, DIN 40050 supplied cable connector assembly
pressure differential) EX8: 25 bar Vibration for non-connec- 4 g
EX8: IP65 with DIN plug
Max. working pressure, PS EX4/EX5/EX6/EX7: 45 bar ted and fastened valve (0 to 1000 Hz, 1 octave /min.)
Medium temperature range
EX8: 35 bar Shock 20g at 11 ms
80g at 1 ms
Uni-flow version TS: -50 ... +100°C Net weight 0.5kg (EX4), 0.52 kg (EX5), 0.60 kg (EX6)
Bi-flow version TS: -40 ... +80°C 1.8 kg (EX7), 2.5 kg (EX8)
Ambient temperature -40 ... +55°C Full travel time EX4/EX5/EX6: 1.5 seconds
CE marking EX4/EX5 not required EX7: 3.2 seconds, EX8: 5.2 seconds
Salt spray test
EX6/EX7/EX8 required, Cat I, Module A Seat leakage Positive shut-off better than solenoid valve
non-corrosion stainless steel body
Humidity 5 to 95% R.H. External leakage ≤ 3 gram / year
Connections Package and delivery EX4/EX5/EX6/EX7: without electrical
EX4/EX5/EX6/EX7 ODF stainless steel fittings (individual) connector
EX8 plated Rotalock ODF fittings EX8: with DIN plug and a pair of
*) Valves are not released for use with inflammable refrigerants.
rotalock connections
Block Diagrams
Superheat Control with EC3-X33 (see page 34) Refrigerant Mass Flow Control with EXD-U (see page 35)
optional display unit ECD-002
1 ECN-N60 sensor
4 PT4 pressure transmitter
6 Supply / Digital Input
9 Alarm out
11 EX4..EX8 valve
12 Suction pressure 4..20mA out
13 ECD-002 Display unit
28 A2.5.1/0706/E