Electronic

Alco valve body R407electronic EX2-I00 3/8"x1/2" without coil 801090

Order No.: 231.0265
Manufacturer number: 801090
Manufacturer: Alco

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Description

The EX2 from ALCO CONTROLS is an electronically controlled expansion valve whose power is determined using pulse width modulation. It can be operated by any suitable electronic controller. However, ALCO EC2 controllers are particularly recommended.

The EX2 expansion valve is controlled via ...

The EX2 from ALCO CONTROLS is an electronically controlled expansion valve whose power is determined using pulse width modulation. It can be operated by any suitable electronic controller. However, ALCO EC2 controllers are particularly recommended.

The EX2 expansion valve is controlled via pulses with variable pulse widths that allow for very precise temperature regulation. It is suitable for all conventional HFC and CFC refrigerants as well as for subcritical CO2 applications and can be used in conventional refrigeration systems or in systems with several evaporators / compressors. The EX2 is constructed similarly to a solenoid valve, but additionally has a damped valve slide as well as a nozzle for refrigerant expansion. The special design guarantees low noise operation and particularly avoids dreaded liquid hammering. During operation, the valve switches between fully open and fully closed. A valve body can be combined with 6 replaceable nozzle inserts to cover 7 power ranges. The selection table below specifies the capacities for valves opened to 100%; it is recommended that you select a valve for 50-80% of this capacity in order to cover differing operating conditions. The ASC standard solenoid that is used to operate the EX2 is available for many DC and AC voltages. For controlling the EX2 we recommend the compact EC2 controller from EMERSON as this offers cooling point regulation alongside many other features. The controller sends out a 24 V~ pulse every 6 seconds to the EX2.

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Features

  • Additional solenoid valve not required

  • Damped valve slider for low noise operation; no liquid hammering

  • Large control range from 10% to 100%

  • One valve body in combination with 6 nozzle inserts covers 7 power ranges up to 18.7 kW (R407C)

  • Suitable for all conventional refrigerants (HFCs, CFCs & HCs)

  • Additional solenoid valve not required

  • Damped valve slider for low noise operation; no liquid hammering

  • Large control range from 10% to 100%

  • One valve body in combination with 6 nozzle inserts covers 7 power ranges up to 18.7 kW (R407C)

  • Suitable for all conventional refrigerants (HFCs, CFCs & HCs)

  • Solder connections (ODF) 10 mm or 3/8” inlet / 12 mm or 1/2” outlet

  • For ASC standard valve solenoids (available separately!)

  • Long service life, high reliability

  • Service life: 80 million cycles (with a pulse interval of 6 seconds) → equates to 15 years

  • Leak rate:

    • (external) < 1.3 g R134a/year

    • (internal) < 4 cc/min. nitrogen at 10 bar pressure differential





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Accessories / Replacement parts

  • Coil
    Alco solenoid valve coil without cable ASC 24VAC 50Hz 801062
    Order No.: 244.0397
  • Düse
    Alco orifice insert f. EX2 EX0-001 801086
    Order No.: 231.0203
  • Alco orifice insert f. EX2 EX0-002 801087
    Order No.: 231.0204
  • Alco orifice insert f. EX2 EX0-003 801088
    Order No.: 231.0205
  • Alco orifice insert f. EX2 EX0-004 801089
    Order No.: 231.0206
  • Alco orifice insert f. EX2 EX0-000 801085
    Order No.: 231.0207
  • Alco orifice insert f. EX2 EX0-00X 801084
    Order No.: 231.0208
  • Regulator
    Alco cooling controller kit EC2-352 w. PT5+sensors TCP/IP 808009
    Order No.: 295.0308
  • Alco cooling controller kit EC2-372 w. PT5+sensors TCP/IP 808011
    Order No.: 295.0310

Technical data

General information
Refrigerant
R134a, R22, R404A/507, R407C, R407A, R407F, R1234ze, R448A, R449A, R450A, R513A
 
Pressure
max. operating pressure
40 bar
max. operating pressure difference (MOPD)
30 bar
Weight
Weight net
0,25 kg
Performance data
Nominal capacity
Qn
13,3 kW
bei R134A, Erläuterung 1
 
17,2 kW
bei R22, Erläuterung 1
 
12,1 kW
bei R404A, Erläuterung 1
 
12,1 kW
bei R507, Erläuterung 1
 
18,7 kW
bei R407C, Erläuterung 1
 
35,0 kW
bei R744, Erläuterung 1
Pipe connections
Outlet
1/2 Inch
Inlet
3/8 Inch
Temperature data
Media temperature
-40 bis + 50 °C

Detaillierte technische Daten finden Sie im Datenblatt im Reiter "Downloads"!

Erläuterungen

  1. Die Daten gelten für das Ventil ohne Düse bei 100 % geöffnetem Ventil. Die genauen Leistungsdaten zu den einzelnen Düsen finden Sie im Datenblatt im Reiter "Downloads"
Technical modifications reserved. Product images may differ from the actual product and are meant for demonstration purposes only. Absolutely no liability can be assumed for possible indication errors and errors in the manufacturers’ information.
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