CKD CVE2, CVSE2, CVE3, CVSE3 Series Manual

AP/
AD

HNB/G

USB/G

FAB/G

FGB/G

FVB

FWB/G

FHB

FLB

AB

AG

CHB/G

MXB/G

SAB/
SVB

HVB/
HVL

For
dry air

NP/NAP/
NVP

PD/FAD/
PJ

CVE/
CVSE

CPE/
CPD

Custom
order

Medical
analysis

Other G.P.
systems

APK/
ADK

Explosion
proof

Coolant valve

Air operated 2, 3 port valve

This is a reliable 2, 3 port coolant
valve with cylinder drive method.
This valve for tool machine cutting oil
or coolant control incorporates a
metal seal to prevent the entry of
cutting chips, abrasive grains and
foreign debris, and ensures highly
reliable control.
The air operated type and solenoid
valve mounted type are available.
These can be used in precise
machines.

Overview

High corrosion resistant
materials

Cast iron body, and stainless steel
metal seal used in valve seat. NBR
or FKM packing seal can be
selected. Materials optimum for
coolant are used.

Certain operation

Certain operation is enabled with
external pilot air operated cylinder.

Water hammer prevented

(Only 2 port valve)

Resistant to foreign matter

A metal seal is used.

Usable in flammable
environment.

(Air operated type)

Features

CVE2/CVSE2
CVE3/CVSE3

(Coolant valve)

Air operated 2, 3 port valve (coolant control)

䡵 For coolant

Series variation 700

Safety precautions 702

䢇

Product introduction 706

Low pressure (0.5 MPa and 1.0 MPa), 2 port valve

䢇

Air operated type CVE2, CVE22-05/10 708

䢇

Solenoid valve mounted type CVSE2, CVSE22-05/10 708

Medium pressure (1.6 MPa and 3.0 MPa), 2 port valve

䢇

Air operated type CVE2, CVE22-16/30 718

䢇

Solenoid valve mounted type CVSE2, CVSE22-16/30 718

High pressure (7.0 MPa), 2 port valve

䢇

Air operated type CVE2, CVE22-70 726

䢇

Solenoid valve mounted type CVSE2, CVSE22-70 726

Medium/high pressure (3.5 MPa and 7.0 MPa), 3 port valve

䢇

Air operated type CVE3-35/70 732

䢇

Solenoid valve mounted type CVSE3-35/70 732

Low pressure (0.3 MPa), 3 port valve

䢇

Air operated type CV3E 744

䢇

Solenoid valve mounted type CVS3E 744

Electronic Catalog file list 746

CONTENTS

Always read the precautions in the Introduction and
page 702 before starting use.

699

700

Category

Air operated type
Solenoid valve mounted type
Air operated type
Solenoid valve mounted type
Air operated type
Solenoid valve mounted type
Air operated type
Solenoid valve mounted type
Air operated type
Solenoid valve mounted type
Air operated type
Solenoid valve mounted type
Air operated type
Solenoid valve mounted type
Air operated type
Solenoid valve mounted type

Working

pressure

range

MPa

CVE2-***-05
CVSE2-***-05
CVE2-***-10
CVSE2-***-10
CVE2-***-16
CVSE2-***-16
CVE2-***-30
CVSE2-***-30
CVE2-***-70
CVSE2-***-70
CV3E-***-03
CVS3E-***-03
CVE3-***-35
CVSE3-***-35
CVE3-***-70
CVSE3-***-70

Model

No. of port

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Rc3/8 Rc1/2

0 to 0.5

0 to 1.0

0 to 1.6

0 to 3.0

0 to 7.0

0 to 0.3

0 to 3.5

0 to 7.0

2 port

3 port

Low pressure

Medium pressure

Medium pressure

High pressure

High pressure

Low pressure

Series variation

Air operated 2, 3 port valve (coolant control)

(Coolant valve)

701

AP/
AD

HNB/G

USB/G

FAB/G

FGB/G

FVB

FWB/G

FHB

FLB

AB

AG

CHB/G

MXB/G

SAB/
SVB

HVB/
HVL

For
dry air

NP/NAP/
NVP

PD/FAD/
PJ

CVE/
CVSE

CPE/
CPD

Custom
order

Medical
analysis

Other G.P.
systems

APK/
ADK

Explosion
proof

Coolant valve

Air operated 2, 3 port valve

Port size

Rc3/4 Rc1 Rc1 1/4 32 flange 40 flangeRc1 1/2 Rc2 50 flange

Page

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65 flange

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80 flange

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708

708
708
708
718
718
718
718
726
726
744
744
732
732
732
732

702

(2)

Pre-lubrication - This series is pre-lubricated, so no lubricator
is required. However, once lubrication has been started, it
must be continued so that the lubricant is not used up. For
lubrication, use the turbine oil Class 1 ISO VG32 (#90) or
equivalent.

(3) Filter - Install a filter with a 5 μm or less filter element.

Design & Selection

CR circuit

Triode AC switch

Leakage
current

C
R

Solenoid valve

Programmable
controller side

Air operated 2, 3 port valve (coolant valve) (CVE/CVSE)

1. Safety designing

CAUTION

䡵 Leakage current from other fluid control components

When operating the solenoid valve with a programmable
controller, etc., check that the output leakage current from the
programmable controller is within the following specifications.
Failure to observe this could lead to malfunctions.

䡵

CVSE Series cannot be used in an explosive gas atmosphere.
When using in an explosive gas atmosphere, change to the
CVE Series, and provide a separate explosion proof solenoid
valve on the pilot air circuit.

䡵 If there are high levels of dust in the area, install a downward-

facing silencer or elbow joint on the exhaust port so that dust
does not enter.

䡵

When using in a place where water splashes on the valve, take
appropriate measures to protect it.

WARNING

2. Working fluid

WARNING

3. Working environment

4. How to use

䡵 Working fluid

The compatibility has not been evaluated with all coolants.
Particularly, if coolant contains high levels of chlorine or
sulfur, materials used at wetted parts could be adversely
affected. Confirm the compatibility when making a selection.
Non-corrosive fluids refer to fluids that do not affect or are not
affected when they contact the valve's wetted part materials.

cast iron (nickel plating), stainless
steel, nitrile rubber or fluoro rubber,
and epoxy resin adhesive.

䡵 External pilot air

(1) Drainage measures - Compressed air contains high levels

of drainage (water, oxidized oil, tar, foreign matter) that
can significantly reduce the reliability of pneumatic
components. As measures against drain, improve air
quality by dehumidifying with an after cooler or dryer,
removing foreign matter with a filter, and removing tar with
a tar removal filter, etc.

CAUTION

䡵 Pilot air pressure

Use pilot air pressure in accordance with the specifications.

X
Y
P
Y
P

IN

Model no.

CVE2
CVE22
CVSE2/CVSE22
CVE3
CVSE3

Pilot operation
side supply port

Unit side

supply port

Note: Pipe the unit side supply port so that the arrow on the body matches

the fluid flow direction. If supplied in reverse, internal components
could be damaged when the valve operates.

CAUTION

1. Piping

䡵 Do not pipe using the solenoid valve section. There is a risk

of damage. (For solenoid valve mounted type)

Installation & Adjustment

䡵 When piping the CVE or CVSE Series, pay attention to the

supply ports on the unit and pilot operation sides.

Wetted part materials:

100 VAC : 3 mA or less
200 VAC : 1.5 mA or less
24 VDC : 1 mA or less
must be maintained.

Safety precautions

Always read this section before starting use.

703

AP/
AD

HNB/G

USB/G

FAB/G

FGB/G

FVB

FWB/G

FHB

FLB

AB

AG

CHB/G

MXB/G

SAB/
SVB

HVB/
HVL

For
dry air

NP/NAP/
NVP

PD/FAD/
PJ

CVE/
CVSE

CPE/
CPD

Custom
order

Medical
analysis

Other G.P.
systems

APK/
ADK

Explosion
proof

Coolant valve

Air operated 2, 3 port valve

䢇 Model no.:

CVS2-CONNECTOR-F4-202936

Hexagon head 24

25

16

Pg9

G1/2

CAUTION

2. Wiring

WARNING

2. Assembling & disassembling

䡵 Wiring of solenoid valve mounted type

(1) Refer to connections in pages 54 to 55 in the Introduction

when wiring to a DIN terminal box or T type terminal box.

(2) The size of the screw for the junction box outlets of the

DIN terminal box can be changed from Pg9 to G1/2
using the optional connector below.

䡵 A spring is used in the cylinder cover. When

disassembling this type, the spring could pop
out and cause injuries, so take care.
The NC (normally closed) type 2 port valve has
a snap ring to prevent the spring from popping
out. Do not remove the snap ring.

(3) Coil direction can be changed 180˚. To reverse the

electrical connection direction, rotate only the coil. Do
not lose internal parts when removing the coil.

CAUTION

1. Maintenance & inspection

During Use & Maintenance

䡵 Pilot air pressure

Use pilot air pressure in accordance with the specifications.

䡵 If water hammer occurs when a 3 port coolant

valve for medium/high pressure operates,
reduce the noise as follows.

(1) Install a metering valve on the valve IN side, then adjust

the metering valve to reach the required flow.
If these countermeasures fail, contact CKD.

CVE/CVSE Series

Individual precautions

704

If the pilot solenoid valve has been disassembled, assemble it as follows.

䡵 Assembling pilot solenoid valve

(for solenoid valve mounted type)

䡵

Gasket direction (for solenoid valve mounted type)

The gasket has an orientation. Check the orientation when reassembling.

䡵

Model no. of pilot solenoid valve (actuator assembly kit)

for CVSE

CVSE2-ACTUATOR–0

Rated voltage

–

Note 1: Indicate the coil option symbol in field *1.
Note 2: Consult with your CKD Sales Representative about the

solenoid valve (actuator assembly kit) for CVS3E.

*1

(1) Coil side

·

Disassembling

Loosen the cross headed pan head machine screw, and lift up the
coil assembly.
The outer spring, plunger assembly and O ring can be removed.

·

Reassembling

Set the parts in the sequence of the O ring, plunger assembly, outer
spring and coil assembly.
Tighten the cross headed pan head machine screw with a torque of

0.7 to 1.1 N·m.

(2) Cover side

·

Disassembling

Loosen the flat headed cross cut screw, and remove the cover.
The valving element spring, valving element guide assembly and O
ring can be removed.

·

Reassembling

Set the parts in the sequence of the O ring, valving element guide
assembly, valving element spring and cover. Tighten the flat headed
cross cut screw with a torque of 0.7 to 1.1 N·m.

Note 1: Do not lose the components such as springs during disassembly.
Note 2: The coil assembly direction can be changed 180˚. Loosen the

cross headed pan head machine screw to change the direction.

Note 3: Turbine oil is applied to the plunger as a lubricant.

Cross headed pan head
machine screw

Body assembly

Flat headed cross
cut screw

Valving element
guide assembly

Valving element
spring

Cover

O ring

O ring

Plunger assembly

Coil assembly

Outer spring

Note 2

CVSE22/CVSE3CVSE2

NO (normally open) type, 3 port valveNC (normally closed) type

Port R Port R

Gasket

CVE/CVSE Series

@

705

AP/
AD

HNB/G

USB/G

FAB/G

FGB/G

FVB

FWB/G

FHB

FLB

AB

AG

CHB/G

MXB/G

SAB/
SVB

HVB/
HVL

For
dry air

NP/NAP/
NVP

PD/FAD/
PJ

CVE/
CVSE

CPE/
CPD

Custom
order

Medical
analysis

Other G.P.
systems

APK/
ADK

Explosion
proof

Coolant valve

Air operated 2, 3 port valve

MEMO