CKD QEV2 Manuale utente

ＳＭ−３５８３９８−Ａ

ＩＮＳＴＲＵＣＴＩＯＮＭＡＮＵＡＬ

ＱＵＩＣＫ ＥＸＨＡＵＳＴＶＡＬＶＥ

ＱＥＶ２



●Please read this instruction manual

carefully before using this product,

particularly the section describing

safety．



●Retainthisinstructionmanualwiththe

product for further consultation

whenevernecessary．

ＦｏｒＳａｆｅｔｙＵｓｅ

To use this product safety, basic knowledge of pneumatic

equipment, including materials, piping, electrical system and

mechanism, is required (ISO 4414 *1JIS B 8370 *2).

We do not bear any responsibility for accidents caused by any person

without such knowledge or arising from improper operation.

Our customers use this product for a very wide range of

applications, and we cannot keep track of all of them. Depending on

operating conditions, the product may fail to operate to maximum

performance, or cause an accident. Thus, before placing an order,

examine whether the product meets your application, requirements,

and how to use it.

This product incorporates many functions and mechanisms to

ensure safety. However, improper operation could result in an

accident. To prevent such accidents read this operation

manualcarefullyforproperoperation.

Observe the cautions on handling described in this manual, as well

as the following instructions:

Additionally, the caution is classified into the following three groups,

“CAUTION”, “WARNING”, and “DANGER”, to identify the

degree of the danger it presents and possible hazard.

Failuretopayattention to DANGER notices

maycauseasituationthatresultsinafatality

or serious injury and that requires urgent

addressing.

!DANGER:

!

WARNING: FailuretopayattentiontoWARNINGnotices

mayresultinafatalityorseriousinjury.

!CAUTION: FailuretopayattentiontoWARNINGnotices

mayresultininjuryordamagetoequipmentor

facilities.

*1) ISO 4414 : Pneumatic fluid power ･･･ Recommendations for the

application of equipment to transmission and control

systems.

*2) JIS B 8370 : General rule for pneumatic systems

[SM-358398-A]

―1―

INDEX



QEV2

ＱＵＩＣＫ ＥＸＨＡＵＳＴＶＡＬＶＥ

Manual No. SM-358398-A

1. UNPACKING ············································································3

2. MOUNTING AND INSTALLATION

2.1 Explanation of activation·····················································3

2.2 Piping··················································································4

2.3 Orientation of installation····················································4

2.4 Usage examples···································································4

3. MAINTENANCE

3.1 Disassembling ·····································································5

3.2 Trouble shooting··································································5

4. INTERNAL STRUCTURE AND LISTS OF PARTS·················5

5. PRODUCT SPECIFICATIONS

5.1 How to order ·······································································6

5.2 Specifications······································································6

5.3 Dimensioned drawing··························································7

Sep.19.2005

−2−

UNPACKING

１

MOUNTING

２

1. UNPACKING

 Bagscontainingproductshouldbeopenedonlywhen

you are ready to connect the product to the pipes

immediatelyafterward.

•Itbagsareopenedbeforetheproductarereadytobe

connectedtothepipes,theentryofforeignmatterfrom

thepipingportscouldcausetheproducttofailor

malfunction.

!

CAUTION:

1) Check the model number imprinted on the product to make sure that the product you

received is exactly the product you ordered.

2) Check the exterior of the product for any damage.

2. MOUNTINGANDINSTALLATION

1)Beforetubeexchange,thesupplyofcompressedairand

confirmtheabsenceofresidualpressure.

2)Tightenpipeswithappropriatetorquetopreventscrew

slack,airleakageandscrewdamage.

3)CarryoutthepipingworkaftercheckingtheJISsymbols

statedonthenameplateattachedtothemainbody.If

the piping is connected in an incorrect direction, this

maycausethecustomerʼsequipmenttobreak.

4)Whenconductingpipingwork,usetoolstotightenatthe

hexagonalcircumference.

5)Donotapplyanylateralloadtothemainbodyduring

mountingandaftermounting.

!

CAUTION:

2.1 Explanation of activation

JISsymbol

１→２

The pressure added to port 1 causes port 3 of

the valve to be closed, forcing air to flow via the

circumference of the valve to port 2.

２→３

A reduced pressure at port 1 causes port 1 of

the valve to be closed, opening port 3 to

discharge air from port 2.

JIS symbol

[SM-358398-A]

―3―

MOUNTING

２

2.2 Piping

1) Lightly tighten the pipe into the connecting port temporarily by hand, and then tighten the

width across flat firmly using the tool.

At this time, always tighten the pipe within a recommended tightening torque range.

[Appropriate tightening torque]

Port dia. Tightening torqueN・m

Rc1/8 3 to 5

Rc1/4 6 to 8

Rc3/8 13 to 15

Rc1/2 16 to 18

Rc3/4 19 to 40

Rc1 41 to 70

2.3 Orientation of installation

1) There is no orientation in installation, but operation may be slow with a small differential

pressure (within 0.05MPa).

2.4 Usage examples

●Usage for quicker exhaust from air cylinder●Usage for quicker exhaust from clutch (or brake)

３

２

１

３

１

２

clutch(orbrake)

１



[SM-358398-A]−4−

MAINTENANCE

４

INTERNAL

STRUCTURE

３

3. MAINTENANCE

3.1 Disassembling

1) Loosen the cross recessed pan head screw to disconnect the plug.

Take out the inside valve in this state.

3.2 Trouble shooting

Motion troubles Possible cause Remedies

Though air flows in the shutting

direction, air keeps flowing. Dust stuck at valve seat Flush air to remove dust.

External air leakage Broken O-ring or caught foreign matter Replace with a new part or flush air to

remove foreign matter.

No flow Wrong piping direction Check the piping port instruction and

connect pipes again.

4. INTERNALSTRUCTUREANDLISTSOFPARTS

●QEV２-6・8●QEV２-10･15〜20･25

No. Part name Material

1 Body Aluminum die cast

2 Plug Aluminum die cast

3 O-ring Nitrile rubber (fluororubber)

4 Valve Hydrogenated-nitrile-rubber (fluororubber)

5 Cross recessed pan head screw with

SW Stainless stell

※Description in parentheses ( ) is for option A (fluororubber specification).

[SM-358398-A]

―5―

5. PRODUCTSPECIFICATIONS

5.1 How to order

QEV2-8- A P

Model code

(a) Port size

Note 1

Note 1 ：The Attachment board is supplied only with

QEV2-6andQEV2-8

(a) Port size

6 Rc1/8

8 Rc1/4

10 Rc3/8

15 Rc1/2

20 Rc3/4

25 Rc1

(b) Option

No code No option

A Fluoro rubber type

(c)Accessory

Nocode No option

P Attachmentboard

appending

５

PRODUCT

5.2 Specifications

Item QEV2-6 QEV2-8 QEV2-10 QEV2-15 QEV2-20 QEV2-25

Media Compressed air

Maximum working pressure MPa 1

Minimum working pressure MPa 0.05

Proof pressure MPa 1.5

Fluid temperature ℃5 to 60

Ambient temperature ℃0 to 60 (Not be frozen)

1・2 1/8 1/4 3/8 1/2 3/4 1

Port size 3 1/4 1/4 1/2 1/2 1 1

Product mass g 80 78 250 250 710 660

Installation attitud Arbitrary

1→2 25 35 90 105 205 275

Effective

sectional area 2→3 30 40 100 115 280 330

[SM-358398-A]−6−

５

PRODUCT

5.2 Dimensioned drawing

●QEV2−6・8

123

QEV2-6 Rc1/4

QEV2-8

Model Portposition

Rc1/8

Rc1/4

●QEV2-10・15

123

QEV2-10 Rc1/2

QEV2-15

Model Portposition

Rc3/8

Rc1/2

[SM-358398-A]

―7―

５

PRODUCT

●QEV2―20・25

[SM-358398-A]−8−

【Piping port indication】

123

QEV2-20 Rc1

QEV2-25

Model Portposition

Rc3/4 Rc1

Indication Description

1 IN(inlet)

2 OUT(outlet)

3EXH(exhaust)

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