Danfoss ICV 25, ICV, ICV 32, ICV 40, ICV 50 Data sheet

Data sheet

Pilot-operated servo valve

Type ICS

ICS pilot-operated servo valves belong to the ICV
(Industrial Control Valve) family.

The valve comprises three main components: valve
body, function module and top cover.

ICS pilot-operated servo valves are pilot operated
valves for regulating pressure, temperature and
ON/OFF function in refrigeration systems. ICS valves
are designed for low and high-pressure refrigerants.

ICS valves can be used on the high and low­pressure sides, in wet and dry suction lines and in
liquid lines without phase change (i.e. where no
expansion takes place in the valve).

The function of ICS valves is dependent on the
pilot pressure applied from either a pilot valve or
external pilot pressure source.

ICS 1 pilot has one pilot pressure connection and
ICS 3 pilot has three pilot pressure connections.

Features • Modular Concept:

© Danfoss | DCS (mwa) | 2018.10

• Designed for industrial refrigeration applications
for a maximum working pressure of 52 bar g /
754 psi g.

• Applicable to HCFC, HFC, R717 (Ammonia) and
R744 (CO2).

• Direct coupled connections.

• Connection types include butt weld, socket weld,
solder and threaded connections.

• Low temperature steel body.

• Low weight and compact design.

• V-port regulating cone ensures optimum
regulating accuracy particularly at part load.

• Function module has a QPQ surface treated
insert and a steel piston ring ensuring precise
control accuracy.

• ICV 4 in., 5 in. and 6 in. ANSI with NPT threaded
pressure outlet in the outlet of the valve.

• Replaceable Teflon valve seat for ICS 25-80.

• Maintenance spare part kit available for
ICS 100-150.

– Each valve body is available with several

different connection types and sizes.

– Valve overhaul on ICS 25-80 is done by

replacing the function module.

– Possible to convert ICS pilot-operated

servo valve to ICM motor operated valve.

• Manual opening.

• The ICS valve is a multifunction valve where
several pilot valves can be mounted into the
pilot ports.

• The standard range of pilot valves can be
used on all sizes of ICS valves. Pilot valves can
be either screwed directly into the ICS valve,
thus eliminating the need for solder / weld
connections or external pilot lines.

• Pressure gauge connection port to measure valve
inlet pressure.

• The top cover can be rotated into any possible
position without affecting the operation of the
valve.

• Classification: DNV, CRN, BV, EAC etc.
To get an updated list of certification on the
products please contact your local Danfoss Sales
Company.

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Data sheet | Pilot-operated servo valve, type ICS

Contents Page

Features 1

Design .................................................................................................3

Technical data ..........................................................................................3

The ICS Concept ........................................................................................4

Function ...............................................................................................6

Material specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Configuration examples ...............................................................................10

Nominal capacities ....................................................................................19

Ordering ..............................................................................................53

Spare parts ............................................................................................58

Accessories............................................................................................58

Dimensions and weights...............................................................................62

Connections...........................................................................................70

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Data sheet | Pilot-operated servo valve, type ICS

Design ICS valves are designed as pilot operated valves

requiring minimal pressure differential to open. If
the pressure difference is 0 bar/0 psi, the ICS valve
will be closed. If the pressure difference is 0.2 bar
/ 3 psi or more, the ICS valve will be fully open. At
pressure differences between 0.07 bar /
1 psi and 0.2 bar /3 psi, the opening degree will be
correspondingly proportional.

The ICS is available for use with either one or three
pilot valves.

Two of the three pilot pressure connections (S1
and S2) are connected in series whilst the third (P)
is connected in parallel to S1 and S2. This allows
different combinations of pilot valves to be used,
thus providing numerous variations in control
functions.

Connections

There is a very wide range of connection types
available with ICS valves:

• D: Butt weld, DIN (2448)

• A: Butt weld, ANSI (B 36.10)

• J: Butt weld, JIS (B S 602)

• SOC: Socket weld, ANSI (B 16.11)

• SD: Solder connection, DIN (2856)

• SA: Solder connection, ANSI (B 16.22)

• FPT: Female pipe thread (ANSI/ASME B 1.20.1)

Approvals

The ICV valve concept is designed to fulfill global
refrigeration requirements.
For specific approval information, please contact
Danfoss.

The ICS valves are approved in accordance with
the European standard specified in the Pressure
Equipment Directive and are CE marked.
For further details / restrictions - see Installation
Instruction

Valve body and top cover material

Low temperature steel

Nominal bore

Classified for Fluid group I

Category Article 3, paragraph 3 II III

Technical data • Refrigerants

Applicable to HCFC, HFC, R717(Ammonia) and
R744 (CO2).
Use with flammable hydrocarbons cannot be
recommended; please contact Danfoss.

• Temperature range

-60 – 120 °C / -76 – 248 °F.

• Surface protection
ICS 25-150:
The external surface is zinc-chromated to provide
good corrosion protection.

ICS valves

DN≤ 25 (1 in.)

DN 32-65 (1 ¼ - 2 ½ in.) DN 80-125 (3 - 5 in.)

• Pressure range
The valve is designed for:
Max. working pressure: 52 bar g / 754 psig

Opening differential pressure:

Fully open: Min. 0.2 bar g (min. 3 psig)
Max. Opening Pressure Differential (MOPD),
solenoid valves only - at nominal conditions.
– 10 W a.c. up to 21 bar / 305 psi
– 20 W a.c. up to 40 bar / 580 psi

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Data sheet | Pilot-operated servo valve, type ICS

The ICS Concept

The ICS concept is developed around a modular principle. This
gives the possibility of combining function modules and top
covers with special valve body size that is available in a variety of
connection possibilities.

• There are eight valve bodies available.

ICV 25 ICV 32 ICV 40 ICV 50 ICV 65

ICV 100 ICV 125 ICV 150

• Valve bodies in the sizes ICV 20-ICV65 are
available with a range of undersizes through
oversized connection sizes and types.
ICV 100 - ICV 150 are available in butt-weld DIN
and butt-weld ANSI nominal sizes

D A J SOC SD SA FPT

Butt-weld DIN Butt-weld ANSI Butt-weld JIS Socket weld ANSI Solder DIN Solder ANSI Female Pipe Thread

• Each valve body may be fitted with a 1 pilot or
3 pilot top cover.

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Data sheet | Pilot-operated servo valve, type ICS

The ICS Concept

(continued)

In ICS, multiple inserts (function modules) are
available to give different capacities.

Type Valve body

ICS 25-5

ICS 25-10 3.5 4.1

ICS 25-15 6.0 7.0

ICS 25-20 8 9.3

ICS 25-25 11.5 13.3

ICS 32 32 17 20

ICS 40 40 27 31

ICS 50 50 44 51

ICS 65 65 70 81

ICS 80 80 85 98

ICS 100 100 142 165

ICS 125 125 207 240

ICS 150 150 354 410

size

25

v

K

(m3/h)

1.7 2.0

(USgal/min)

C

v

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Data sheet | Pilot-operated servo valve, type ICS

Function

3f

ICS 1 Pilot

ICS 1 Pilot and ICS 3 Pilot

1. Body

1a Pilot channel to inlet side
1b Circular gap between house and
module

2. Top cover

2a Pilot channels in top cover
2b Pilot insertion hole
2c Pressure gauge connection
2d Piston top inlet channel
2e Cross channel SI to SII
2f Inlet channel
2g Circular groove
3 Function module
3a Cylinder
3b Piston
3c Valve plate
3d Spring
3e Cone
3f Equalisation orifice
3g Piston rod

p1 Inlet pressure
p2 Pressure on piston
p3 Pressure underneath piston
p4 Outlet pressure
8 Manual operating spindle

ICS 3 Pilots

The ICS main valve is a pilot operated valve. The
types of pilot valves used determine the function.
The ICS main valve with pilot valve(s) controls
refrigerant flow by modulation or on / off in
accordance with the pilot valve and main valve
status. The manual spindle can be used to open the
valve plate.

The opening degree of the main valve is
determined by the pressure difference (differential
pressure) between pressure p2, which acts on top
of the servo piston (3b), and pressure p3, which acts
on the underside of the servo piston.

If this pressure difference is 0, the main valve will be
fully closed.
If the pressure difference is 0.2 bar / 3 psi or greater,
the main valve will be fully open.
At pressure differences (p2 - p3) between 0.07 bar /
1 psi and 0.2 bar / 3 psi, the degree of opening will
be correspondingly proportional.

The port of the throttle cone (3e) is V-shaped,
which provide good regulation characteristic to
pilot operated main valves even at low loads.
P3 pressure is equal to the valve outlet pressure (P4),
due to a clearance between the piston rod (3g) and
the function module. The opening degree of the
ICS valve is therefore controlled by the application
of P2 pressure acting on top of the servo piston,
which is equal to or greater than valve outlet
pressure (P4).

p2 = p4 ~ closed
p2 = p4 + 0.2 bar / 3 psi ~ fully open
p4 ≤ p2 ≤ p4 + 0.2 bar / 3 psi ~ proportional degree
of opening.

Fig. 2Fig. 1

The maximum pressure (p2) can act on the top of
the servo piston (3b). p2 normally corresponds to
the pressure, p1 - ICS main valve inlet pressure.
Inlet pressure p1 is led, via the drilled channels (1a,
1b, 2f, 2b (pilot), 2a, 2d) in the valve body (1) and
cover (2) through the individual pilot valves and
onto the top of the servo piston (3b).

The degree of opening of the individual pilot
valves determines the magnitude of pressure p2
and thus the degree of opening of the main valve.
The equalisation hole (3f) in the servo piston (3b)
ensures that pressure p2 is balanced in accordance
with the degree of opening of the pilot valve.

Note:

When ICS valves with 3 pilot ports are used with
external pressure connector (fig. 2, pos. 61), the
valve port inlet pressure will be isolated.

The ICS can be fitted with just a single screwed-in
pilot valve or external pilot connection. The degree
of opening of the main valve will be in accordance
with the control status of the pilot valve or external
pilot flow control.
ICS main valve with one pilot connection is fully
closed when the pilot valve is fully closed and
fully open when the pilot valve is fully open.
Otherwise the degree of opening of the main valve
is proportional to the degree of opening of the pilot
valve.

The ICS 3 pilot version can be fitted with one, two,
or three pilot valves so that up to three regulating
functions are possible. If the external pilot
connection is used, more functions can be added.

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Data sheet | Pilot-operated servo valve, type ICS

Function (continued)

In the ICS three pilot version, the pilot ports are
related as follows:

• The pilot valves fitted in ports SI and SII are
connected in series.
The ICS 3 pilot operated main valve will be fully
closed if just one of the series-connected pilot
valves is closed. The main valve can only open if
both pilot valves are open at the same time.

• The pilot valve fitted in port P is connected in
parallel to the pilot valves in ports SI and SII.

The ICS valve will be fully open if the pilot valve in P
is fully open, irrespective of the degree of opening
of pilot valves SI and SII.
The ICS valve will be fully closed if the pilot valve in
P is fully closed and at least one of the valves in SI
or SII is fully closed at the same time. The relation
between the pilot valves in ports SI, SII and P is
shown in the table on the next page.

If the ICS is not fitted with three pilot valves, the
unused port(s) must be sealed with a blanking
plug. If the blanking plug is fitted as an assembled
unit, A + B, the channels from the specific port will
be closed. (See illustration below)

If only the top part, A, of the plug is fitted, the
channels from the ports in question will be open.
If the degree of opening of the ICS main valve is not
to be a function of the main valve inlet pressure,
or if more than three regulating functions are

required, ports SI, SII or P can be fitted with a nipple
for the connection of external pilot pressure. This
applies to all ICS versions.

The pressure to which the external pilot line is
connected will then determine pressure p2 on top
of the servo piston. The pilot valves fitted in that
external pilot line will determine the main valve
function. Pilot valves installed in external lines must
be mounted in a type CVH housing.

Depending on the function of the pilot valves, the
ICS regulating characteristic becomes:

• on / off

• proportional

• integral or

• cascade.

ICS main valves are therefore especially suitable for
all forms of temperature and pressure regulating
systems.

An overview of the types of pilot valves available
can be found in the literature “Pilot valves for
operated main valves” (AI248786497190).

On the following pages, a number of configuration
examples can be found. These are only for
explanatory purpose. However, by using the
literature regarding pilot valves these examples are
easier to comprehend.

Pilot valve port ICS valve

SI SII P

Open Open Closed Open

Open Open Open Open

Open Closed Closed Closed

Open Closed Open Open

Closed Open Closed Closed

Closed Open Open Open

Closed Closed Closed Closed

Closed Closed Open Open

Blanking plug A Blanking plug A + B

Example (ICS with 3 pilot valves)

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Data sheet | Pilot-operated servo valve, type ICS

Material specification - ICS 25, 32, 40, 50, 65

Type and size of Bolt (pos. 5)

Type Screw
ICS 25 M12 × 30 A2-70 DIN 933
ICS 32 M14 × 35 A2-70 DIN 933
ICS 40 M14 × 40 A2-70 DIN 933
ICS 50 M16 × 40 A2-70 DIN 933
ICS 65 M16 × 50 A2-70 DIN 933

No. Part Material EN ASTM JIS

1 Body Low temperature steel G20Mn5QT, EN 10213-3 LCC A352 SCPL1 G5151
2 Top cover Low temperature steel G20Mn5QT, EN 10213-3

P285QH+QT 10222-4

3 Function module

(assembled)
3a o-ring Cloroprene (Neoprene)
3b o-ring Cloroprene (Neoprene)
3c Washer plate Steel

A Cylinder Steel
B Piston Steel
C Valve plate PTFE
D Spring Steel
E Cone Steel
4 Gasket Fiber, non-asbestos
5 Bolts Stainless steel A2-70, EN 1515-1 Grade B8 A320 A2-70, B 1054
6 Plug Steel
7 Gasket Aluminium
8 Manual operating spindle Steel
9 Plug Steel

10 Gasket Aluminium

LCC A352
LF2, A350

SCPL1 G5151

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Data sheet | Pilot-operated servo valve, type ICS

Material specification - ICS 100, 125, 150

8

5

2

4

3

7

6

3a

3b

3c

3d
3h

3e

3h

3f

3g

1

Type and size of Bolt (pos. 5)

Type Screw

No. Part Material EN ASTM JIS

1 Body Low temperature steel G20Mn5QT, EN 10213-3 LCC A352 SCPL1 G5151
2 Top cover Low temperature steel G20Mn5QT, EN 10213-3 LCC A352 SCPL1 G5151

3 Function module (assembled)
3a Piston/rod Stainless steel / steel
3b Piston ring Steel
3c Insert Steel
3d Spring Steel
3e Cone Stainless steel / steel

3f Teflon plate Teflon unfilled
3g Washer plate PTFE
3h o-ring Cloroprene (Neoprene)

4 Gasket Fiber, non-asbestos
5 Bolts Stainless steel A2-70, EN 1515-1 Grade B8 A320 A2-70, B 1054
6 Plug Steel
7 Eye bolt Galvanized steel
8 Manual operating spindle Steel

ICS 100 M20 × 60 A2-70 DIN 933

ICS 125 M20 × 60 A2-70 DIN 933

ICS 150 M20 × 70 A2-70 DIN 933

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Data sheet | Pilot-operated servo valve, type ICS

Configuration examples

Example no. 1-1 Products Products

Constant pressure regulation

• CVP-L (-0.66 – 7 bar g)
(19.5 in. Hg to 102 psig)

• CVP-M 4 – 28 bar g /
58 – 406 psig

• CVP-H 25 – 52 bar g
/ 363 – 754 psig

Example no. 1-2 Products Products

Differential pressure regulation

• CVPP-L (0.66 – 7 bar g)
(19.5 in. Hg to 102 psig)

• CVPP-M 4 – 28 bar g /
58 – 406 psig

Example no. 1-3 Products Products

On / off regulation (solenoid valve) 1 × ICS 1 Pilot

1 × ICS 1 Pilot
1 × CVP-L/M/H

1 × ICS 1 Pilot
1 × CVPP-L/M

1 × EVM
1 × coil

1 × ICS 3 Pilots
1 × CVP-L/M/H
2 × Blanking plugs
SI: A + B
SII: A

1 × ICS 3 Pilots
1 × CVPP-L/M
2 × Blanking plugs
SI: A + B
SII: A

1 × ICS 3 Pilots
1 × EVM
1 × coil
2 × Blanking plugs
SI: A + B
SII: A

Example no. 1-4 Products Products

Regulation with external
control pressure

Example no. 1-5 Products Products

On / off regulation (solenoid valve) 1 × ICS 1 Pilot

1 × ICS 1 Pilot
1 × nipple for
external
control
pressure

1 × EVM-NO
(12 W coil)

1 × ICS 3 Pilots
1 × nipple for
external control
pressure
2 × Blanking plugs
SI: A + B
SII: A

1 × ICS 3 Pilots
1 × EVM-NO (12
W coil)
2 × Blanking plugs
SI: A + B
SII: A

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Data sheet | Pilot-operated servo valve, type ICS

Configuration examples (continued)

Example no. 1-6 Products Products

Crankcase pressure regulation.
(Max. suction pressure regulation)

• -0.45 – 7 bar g
(13.3 in. Hg to 102 psig)

1 × ICS 1 Pilot
1 × CVC-L

1 × ICS 3 Pilots
1 × CVC-L
2 × Blanking plugs
SI: A + B
SII: A

Example no. 1-7

Electronically controlled media
temperature regulation

• -0.66 – 8 bar g
(19.5 in. Hg to 116 psig)

CVE

Danfoss

27H475

Products Products

1 × ICS 1 Pilot
1 × CVE

1 × ICS 3 Pilots
1 × CVE
2 × Blanking plugs
SI: A + B
SII: A

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Data sheet | Pilot-operated servo valve, type ICS

Configuration examples (continued)

Example no. 2-1 Products

Constant pressure regulation
combined with electrical shut off

• -0.66 – 7 bar g
(19.5 in. Hg to 102 psig)

Example no. 2-2 Products

Constant pressure regulation
combined with electrical wide open

• -0.66 – 7 bar g
(19.5 in. Hg to 102 psig)

1 × ICS 3 Pilots
1 × blanking plug (A + B)
1 × CVP-L
1 × EVM
1 × coil

1 × ICS 3 Pilots
1 × blanking plug (A)
1 × CVP-L
1 × EVM

Example no. 2-3 Products

Constant pressure regulation
combined with electrical shut off
and wide open

• -0.66 – 7 bar g
(19.5 in. Hg to 102 psig)

Example no. 2-4 Products

Constant pressure regulation with
change-over between two preset
evaporating pressures

• -0.66 – 7 bar g
(19.5 in. Hg to 102 psig)

Example no. 2-5 Products

External control pressure with
electrical shut off combined with
constant pressure regulation

• -0.66 – 7 bar g
(19.5 in. Hg to 102 psig)

1 × ICS 3 Pilots
1 × CVP-L
2 × EVM
2 × coils

1 × ICS 3 Pilots
2 × CVP-L
1 × EVM
1 × coil

1 × ICS 3 Pilots
1 × nipple for external control
pressure
1 × CVP-L
1 × EVM
1 × coil

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Data sheet | Pilot-operated servo valve, type ICS

Configuration examples (continued)

Example no. 2-6 Products

Constant pressure regulation with
external control pressure combined
with electrical wide open

• -0.66 – 7 bar g
(19.5 in. Hg to 102 psig)

Example no. 2-7 Products

Constant pressure regulation with
electrical shut off combined with
external control pressure

• -0.66 – 7 bar g
(19.5 in. Hg to 102 psig)

1 × ICS 3 Pilots
1 × nipple for external control
pressure
1 × CVP-L
1 × EVM
1 × coil

1 × ICS 3 Pilots
1 × nipple for external control
pressure
1 × CVP-L
1 × EVM
1 × coil

Example no. 2-8 Products

Solenoid valve with external control
pressure for small pressure drops

Example no. 2-9 Products

Differential pressure regulation
combined with electrical shut off

• CVPP-L (0.66 – 7 bar g)
(19.5 in. Hg to 102 psig)

1 × ICS 3
1 × blanking plug (A + B)
1 × nipple for external control
pressure
1 × EVM
1 × coil

1 × ICS 3
1 × blanking plug (A + B)
1 × CVPP-L
1 × EVM
1 × coil

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Data sheet | Pilot-operated servo valve, type ICS

Configuration examples (continued)

Example no. 2-10 Products

Differential pressure regulation
combined with electrical wide open

• CVPP-L (0.66 – 7 bar g)
(19.5 in. Hg to 102 psig)

Example no. 2-11 Products

Differential pressure regulation
combined with electrical wide open
and shut off

• CVPP-L (0.66 – 7 bar g)
(19.5 in. Hg to 102 psig)

1 × ICS 3 Pilots
1 × blanking plug (A)
1 × CVPP-L
1 × EVM
1 × coil

1 × ICS 3 Pilots
1 × CVPP-L
2 × EVM
2 × coils

Example no. 2-12

Constant pressure regulation
combined with electrical shut off

• CVP-L (-0.66 – 7 bar g)
(19.5 in. Hg to 102 psig)

• CVP-M 4 – 28 bar g /
58 – 406 psig

• CVP-H 25 – 52 bar g /
363 – 754 psig

Example no. 2-13

Constant pressure regulation
combined with electrical wide open

• CVP-L (-0.66 – 7 bar g)
(19.5 in. Hg to 102 psig)

• CVP-M 4 – 28 bar g /
58 – 406 psig

• CVP-H 25 – 52 bar g /
363 – 754 psig

Example no. 2-14

Constant pressure regulation
combined with electrical shut off
and wide open

• CVP-L (-0.66 – 7 bar g)
(19.5 in. Hg to 102 psig)

• CVP-M 4 – 28 bar g /
58 – 406 psig

• CVP-H 25 – 52 bar g /
363 – 754 psig

Danfoss

Danfoss

Danfoss

27H492

27H493

27H494

Products

1 × ICS 3 Pilots
1 × blanking plug (A + B)
1 × CVP-L/M/H
1 × EVM
1 × coil

Products

1 × ICS 3 Pilots
1 × blanking plug (A)
1 × CVP-L/M/H
1 × EVM
1 × coil

Products

1 × ICS 3 Pilots
1 × CVP-L/M/H
2 × EVM
2 × coils

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Data sheet | Pilot-operated servo valve, type ICS

Danfoss

27H495

Configuration examples (continued)

Example no. 2-15

Constant pressure regulation with
change-over between two preset
evaporating pressures

• CVP-L (-0.66 – 7 bar g)
(19.5 in. Hg to 102 psig)

• CVP-M 4 – 28 bar g /
58 to 406 psig

• CVP-H 25 – 52 bar g /
363 – 754 psig

Products

1 × ICS 3 Pilots
2 × CVP-L/M/H
1 × EVM
1 × coil

Example no. 2-16

Differential pressure regulation
combined with electrical shut off

• CVPP-L (-0.66 – 7 bar g)
(19.5 in. Hg to 102 psig)

• CVPP-M 4 – 28 bar g /
58 – 406 psig

Example no. 2-17

Differential pressure regulation
combined with electrical wide open

• CVPP-L (-0.66 – 7 bar g)
(19.5 in. Hg to 102 psig)

• CVPP-M 4 – 28 bar g /
58 – 406 psig

Example no. 2-18

Differential pressure regulation
combined with electrical wide open
and shut off

• CVPP-L (-0.66 – 7 bar g)
(19.5 in. Hg to 102 psig)

• CVPP-M 4 – 28 bar g /
58 – 406 psig

Danfoss

Danfoss

Danfoss

27H496

27H497

27H498

Products

1 × ICS 3 Pilots
1 × blanking plug (A + B)
1 × CVPP-L/M
1 × EVM
1 × coil

Products

1 × ICS 3 Pilots
1 × blanking plug (A)
1 × CVPP-L/M
1 × EVM
1 × coil

Products

1 × ICS 3 Pilots
1 × CVPP-L/M
2 × EVM
2 × coils

Example no. 2-19

Constant pressure regulation
combined with electrical wide open
and shut off

• CVP-L (-0.66 – 7 bar g)
(19.5 in. Hg to 102 psig)

• CVP-M 4 – 28 bar g /
58 – 406 psig

• CVP-H 25 – 52 bar g /
363 – 754 psig

© Danfoss | DCS (mwa) | 2018.10

Danfoss

27H499

Products

1 × ICS 3 Pilots
1 × CVP-L/M/H
1 × EVM
1 × EVM-NO (12 W coil)
2 × coils

AI241186442033en-US1003 | DKRCI.PD.HS2.B5.22 | 15

Data sheet | Pilot-operated servo valve, type ICS

Configuration examples (continued)

Example no. 2-20 Products

Crankcase pressure regulation
(max. suction pressure regulation)
combined with shut off

• -0.45 – 7 bar g
(13.3 in. Hg to 102 psig)

Example no. 2-21 Products

Crankcase pressure regulation
(max. suction pressure regulation)
combined with evaporating pressure
regulation

• -0.66 – 28 bar g
(19.5 in. Hg to 406 psig).

1 × ICS 3 Pilots
1 × blanking plug (A + B)
1 × CVC-L
1 × EVM
1 × coil

1 × ICS 3 Pilots
1 × blanking plug (A + B)
1 × CVC-L/M
1 × CVP-L/M

Example no. 2-22 Products

Crankcase pressure regulation (max.
suction pressure regulation) at low
pressure drops across the valve

• -0.45 – 7 bar g
(13.3 in. Hg to 102 psig)

Example no. 2-23 Products

Crankcase pressure regulation
(max. suction pressure regulation)
combined with constant pressure
regulation and electrical shut off.

• -0.66 – 7 bar g
(19.5 in. Hg to 102 psig).

Example no. 2-24 Products

Hot gas bypass regulation combined
with electrical shut off

• -0.45 – 7 bar g
(13.3 in. Hg to 102 psig)

1 × ICS 3 Pilots
1 × blanking plug (A + B)
1 × nipple for external control
pressure
1 × CVC-L

1 × ICS 3 Pilots
1 × blanking plug (A + B)
1 × nipple for external control
pressure
1 × CVP-L
1 × EVM
1 × coil
2 × CVH
1 × CVC-L

1 × ICS 3 Pilots
1 × blanking plug (A + B)
1 × CVC-L
1 × EVM
1 × coil

© Danfoss | DCS (mwa) | 2018.10

AI241186442033en-US1003 | DKRCI.PD.HS2.B5.22 | 16

Data sheet | Pilot-operated servo valve, type ICS

Configuration examples (continued)

Example no. 2-25

Constant pressure regulation with
electrical shut off and protection
against high pressure when suction
line is closed

• -0.66 – 28 bar g
(19.5 in. Hg to 406 psig).

Danfoss

27H505

Products

1 × ICS 3 Pilots
1 × CVP-L
1 × EVM
1 × coil
1 × CVP-M

Example no. 2-26

Electronically controlled media
temperature regulation combined
with electrical shut off

• -1 – 8 bar g
(0 in. Hg to 116 psig).

Example no. 2-27

Electronically controlled media
temperature regulation combined
with electrical shut off and wide
open

• -1 – 8 bar g
(0 in. Hg to 116 psig).

Example no. 2-28

Electronically controlled media
temperature regulation combined
with electrical shut off and change­over to constant pressure regulation

• -1 – 8 bar g
(0 in. Hg to 116 psig).

CVE

CVE

CVE

Danfoss

Danfoss

Danfoss

27H506

27H506

27H507

Products

1 × ICS 3 Pilots
1 × blanking plug (A + B)
1 × CVE
1 × EVM
1 × coil

Products

1 × ICS 3 Pilots
1 × CVE
2 × EVM
2 × coils

Products

1 × ICS 3 Pilots
1 × CVQ
1 × CVP-L
1 × EVM
1 × coil

Example no. 2-29

Electronically controlled media
temperature regulation with low
evaporating pressure protection
combined with wide open

• -1 – 8 bar g
(0 in. Hg to 116 psig).

© Danfoss | DCS (mwa) | 2018.10

CVE

Danfoss

27H508

Products

1 × ICS 3 Pilots
1 × CVE
1 × CVP-L
1 × EVM
1 × coil

AI241186442033en-US1003 | DKRCI.PD.HS2.B5.22 | 17

Data sheet | Pilot-operated servo valve, type ICS

Configuration examples (continued)

Example no. 2-30

Electronically controlled media
temperature regulation with low
evaporating pressure protection
combined with changeover to
constant pressure regulation

• -1 – 8 bar g
(0 in. Hg to 116 psig).

CVE

Danfoss

27H509

Products

1 × ICS 3 Pilots
1 × CVE
2 × CVP-L

© Danfoss | DCS (mwa) | 2018.10

AI241186442033en-US1003 | DKRCI.PD.HS2.B5.22 | 18

Data sheet | Pilot-operated servo valve, type ICS

Nominal capacities

Liquid line with / without phase change

Location of valve in system (marked with grey)

Hot gas bypass & defrost line

Discharge

Dry suction line

Wet suction line

Liquid line without phase change Liquid line with or without phase change

Location of valve in system (marked with grey)

Hot gas bypass & defrost line

Dry suction line

Wet suction line

line

Discharge
line

Pump

Gravity

Liquid line without phase change Liquid line with or without phase change

Location of valve in system (marked with grey)

Hot gas bypass & defrost line

Dry suction

line

Liquid line without phase change

Discharge
line

DX

© Danfoss | DCS (mwa) | 2018.10

AI241186442033en-US1003 | DKRCI.PD.HS2.B5.22 | 19

Data sheet | Pilot-operated servo valve, type ICS

Nominal capacities

SI units

US units

Liquid line with / without phase change

Calculation example (R 717 capacities):

Running conditions in a plant are as follows:
Te = -20 °C
Qo = 250 kW
T
Max. ∆p = 0.3 bar

The capacity table is based on nominal condition
(pressure drop ∆p = 0.2 bar, T

Therefore the actual capacity must be corrected to
nominal condition by means of correction factors.

Correction factor for ∆p 0.3 bar f∆p = 0.82

Calculation example (R 717 capacities):

Running conditions in a plant are as follows:
Te = -20 °F
Qo = 130 TR
Liquid temperature = 50 °F
Max. ∆p = 4 psi

The capacity table is based on nominal condition
(pressure drop ∆p = 3 psi, T

= 10 °C

liq

= 30 °C)

liq

= 90 °F)

liq

Correction factor for liquid temperature f

Qn = Qo × f∆p × f

= 250 × 0.82 × 0.92 = 189 kW

Tliq

= 0.92

Tliq

From the capacity table a ICS 25-10 with Qn
capacity 366 kW is selected.

Correction factor for ∆p 4 psi, f∆p = 0.87
Correction factor for liquid temperature f

Qn = Qo × f∆p × f

= 130 × 0.87 × 0.92 = 104 TR

Tliq

= 0.92

Tliq

From the capacity table a ICS25-15 with Qn capacity
175 TR is selected.

Therefore the actual capacity must be corrected to
nominal condition by means of correction factors.

© Danfoss | DCS (mwa) | 2018.10

AI241186442033en-US1003 | DKRCI.PD.HS2.B5.22 | 20

Data sheet | Pilot-operated servo valve, type ICS

Nominal capacities

SI units

Capacity table for nominal
conditions, QN [kW],
T

= 30 °C,

liq

∆P = 0.2 bar

Liquid line with / without phase change

R 717

Type Valve body

ICS25-5

ICS25-10 3.5 347 353 358 362 366 370 372

ICS25-15 6 595 604 613 621 628 633 638

ICS25-20 8 794 806 818 828 838 845 852

ICS25-25 11.5 1140 1158 1175 1190 1203 1216 1223

ICS32 32 17 1687 1710 1738 1760 1777 1795 1810

ICS40 40 27 2675 2720 2760 2795 2825 2850 2875

ICS50 50 44 4365 4430 4500 4550 4600 4650 4685

ICS65 65 70 6940 7050 7150 7250 7325 7400 7450

ICS80 80 85 8432 8559 8690 8797 8893 8982 9046

ICS100 100 142 14086 14299 14517 14696 14857 15005 15112

ICS125 125 207 20533 20845 21162 21424 21658 21873 22029

ICS150 150 354 35115 35647 36191 36638 37038 37406 37673

size

25

Correction factor for ∆P (f∆P)

∆P (bar) Correction factor

0.2 1.00

0.25 0.89

0.3 0.82

0.4 0.71

0.5 0.63

0.6 0.58

Kv

(m3/h)

1.7 169 171 174 176 178 180 181

-50 -40 -30 -20 -10 0 10

Evaporating temperature [°C]

Correction factor for liquid temperature (T

Liquid temperature [°C] Correction factor

-20 0.82

-10 0.86

0 0.88

10 0.92

20 0.96

30 1.00

40 1.04

50 1.09

)

liq

US units

Capacity table for nominal
conditions, QN [Tons of
Refrigeration],
T

= 90 °F,

liq

∆P = 3 psi

R 717

Type Valve body

ICS25-5

ICS25-10 4.1 99.0 100 102 104 105 106 107

ICS25-15 7 169 172 175 178 180 181 183

ICS25-20 9.3 226 230 233 237 240 242 244

ICS25-25 13.3 324 330 335 341 345 348 351

ICS32 32 20 480 488 496 503 509 514 518

ICS40 40 31 762 775 788 799 808 816 822

ICS50 50 51 1242 1262 1285 1302 1317 1330 1340

ICS65 65 81 1975 2010 2043 2070 2095 2115 2130

ICS80 80 98 2377 2416 2456 2496 2524 2546 2568

ICS100 100 165 4002 4068 4135 4202 4249 4287 4324

ICS125 125 240 5820 5916 6015 6113 6181 6235 6289

ICS150 150 410 9943 10107 10275 10443 10559 10651 10745

size

25

Correction factor for ∆P (f∆P)

∆P (psi) Correction factor

3 1.00

4 0.87

5 0.79

6 0.72

7 0.66

8 0.62

Cv

(USgal/min)

2 48.0 48.8 49.6 50.6 51.0 51.4 52.0

-60°F -40°F -20°F 0°F 20°F 40°F 60°F

Evaporating temperature [°F]

Correction factor for liquid temperature (T

Liquid temperature [°F] Correction factor

-10 0.82

10 0.85

30 0.88

50 0.92

70 0.96

90 1.00

110 1.04

130 1.09

)

liq

© Danfoss | DCS (mwa) | 2018.10

AI241186442033en-US1003 | DKRCI.PD.HS2.B5.22 | 21

Data sheet | Pilot-operated servo valve, type ICS

Nominal capacities

SI units

Capacity table for nominal
conditions, QN [kW],
T

= 10 °C,

liq

∆P = 0.2 bar

Liquid line with / without phase change

R 744

Type Valve body

ICS25-5

ICS25-10 3.5 84.0 85.0 85.0 85.0 85.0 83.0 80.0

ICS25-15 6 144 145 146 146 145 142 137

ICS25-20 8 193 194 195 195 194 190 183

ICS25-25 11.5 277 278 280 281 278 273 263

ICS32 32 17 409 412 415 415 411 403 388

ICS40 40 27 650 654 658 659 654 641 617

ICS50 50 44 1058 1065 1073 1073 1065 1044 1005

ICS65 65 70 1685 1695 1707 1708 1694 1661 1598

ICS80 80 85 2045 2058 2068 2070 2057 2015 1943

ICS100 100 142 3417 3438 3456 3458 3436 3365 3246

ICS125 125 207 4981 5011 5037 5040 5009 4906 4732

ICS150 150 354 8519 8570 8615 8620 8567 8390 8092

size

25

Correction factor for ∆P (f∆P)

∆P (bar) Correction factor

0.2 1.00

0.25 0.89

0.3 0.82

0.4 0.71

0.5 0.63

0.6 0.58

Kv

(m3/h)

1.7 41.0 41.0 41.0 41.0 41.0 40.0 39.0

-40 -30 -20 -10 0 10 10

Evaporating temperature [°C]

Correction factor for liquid temperature (T

Liquid temperature [°C] Correction factor

-20 0.52

-10 0.67

0 0.91

10 1.00

15 1.09

)

liq

US units

Capacity table for nominal
conditions, QN [Tons of
Refrigeration],
T

= 50 °F,

liq

∆P = 3 psi

R 744

Type Valve body

ICS25-5

ICS25-10 4.1 24.2 24.6 24.8 24.8 24.5 23.8 22.4

ICS25-15 7 41.5 42.1 42.5 42.5 42.0 40.8 38.4

ICS25-20 9.3 55.3 56.2 56.7 56.7 56.0 54.4 51.0

ICS25-25 13.3 79.5 81.8 81.5 81.5 80.5 78.0 73.5

ICS32 32 20 118 119 120 120 119 115 109

ICS40 40 31 187 190 191 191 189 184 173

ICS50 50 51 304 309 312 312 308 299 281

ICS65 65 81 484 492 496 496 490 476 448

ICS80 80 98 582 592 596 596 589 572 539

ICS100 100 165 980 997 1004 1004 992 964 907

ICS125 125 240 1426 1450 1460 1460 1444 1402 1319

ICS150 150 410 2436 2477 2494 2494 2466 2395 2254

size

25

Correction factor for ∆P (f∆P)

∆P (psi) Correction factor

3 1.00

4 0.87

5 0.79

6 0.72

7 0.66

8 0.62

Cv

(USgal/min)

2 11.7 11.9 12.0 12.0 11.9 11.6 10.9

-60°F -40°F -20°F 0°F 20°F 40°F 60°F

Evaporating temperature [°F]

Correction factor for liquid temperature (T

Liquid temperature [°F] Correction factor

-10 0.48

10 0.64

30 0.88

50 1.00

)

liq

© Danfoss | DCS (mwa) | 2018.10

AI241186442033en-US1003 | DKRCI.PD.HS2.B5.22 | 22