For Medium Pressure

Specifications
1/4", 3/8", 1/2", 3/4", 1"

Size (Thread)

Zerospill Cupla
Low spill type for medium pressure use
Working pressure

Valve structure

Applicable fluids

Two-way shut-off(Non-Spill)

Water

Hydraulic oil

Pressure unitMPa

kgf/cm2

bar

PSI

Working pressure

3.5

35

35508

Workingtemperature range

Remarks

Seal material
Working temperature range

Seal material

MarkNitrile rubber

NBR (SG)

Fluoro rubber

FKM (X-100) -20˚C to +180˚C Standard material

Ethylene-propylenerubber

EPDM (EPT) -40˚C to +150˚C Standard material-20˚C to +80˚C Standard material

Note: Applicable fluids depend on the body material and seal material.
Acceptable working temperature range depends on operating conditions.

3.5
3.5 MPa{35 kgf/cm2}

Stainless steel (SUS 304)

Brass

Body material

Chemicals

Air

Gas

Unique seal design reduces both liquid
spillage and air ingress.

Max. Tightening TorqueNm {kgf • cm}

Size (Thread)
Torque

1/4"

3/8"

1/2"

3/4"

1"

Brass

9 {92}

12 {122}30 {306}

50 {510}65 {663}

Stainless steel

14 {143}

22 {224}60 {612}90 {918}120 {1224}

Flow Direction
Fluid flow can be bi-directional when socket and plug are connected.

• New valve design offers smooth zero-friction movement.
• Push to connect design.
• The variety of body materials, sizes and end configurations has beenstandardized to comply with wide range of applications.
• Automatic shut-off valves in both socket and plug prevent fluid spill out on
disconnection.
Interchangeability
Different size socket and plug cannot be connected to each other.

(mm2)

Min. Cross-Sectional Area
Model
Min. cross-sectional area

ZEL-2SP

ZEL-3SP

ZEL-4SP

ZEL-6SP

ZEL-8SP

3160.5

86.5

160.6

188.7

1.3 x 10-1 Pa {1 x 10-3 mmHg}

Suitability for Vacuum
Socket only

Plug only

When connected--Operational( mL)

Admixture of Air on Connection May vary depending upon the usage conditions.
Model
Volume of air admixture

ZEL-2SP

ZEL-3SP

ZEL-4SP

ZEL-6SP

ZEL-8SP

0.16

0.21

0.37

1.12

1.52(mL)

Volume of Spillage per Disconnection May vary depending upon the usage conditions.
Model
Volume of spillage

ZEL-2SP

ZEL-3SP

ZEL-4SP

ZEL-6SP

ZEL-8SP

0.06

0.12

0.20

0.43

0.55• Repeated connections and disconnections of Cuplas or the use of fluids with low viscosity may cause some spillage.

Flow Rate – Pressure Loss Characteristics[Test conditions]• Fluid : Water• Temperature : 25˚C to 27˚C

1.0{10}

ZEL-4S x ZEL-4P

ZEL-6S x ZEL-6P

ZEL-3S x ZEL-3P

Pressure loss in MPa {kgf/cm2}

ZEL-2S x ZEL-2P

0.1{1}

ZEL-8S x ZEL-8P

0.01{0.1} 1

Flow rate in L/min

79

101001000

Zerospill Cupla
Models and Dimensions

Plug

WAF : WAF stands for width across flats.

Female thread

SocketFemale thread
T

DDT

H

CH

L

Model

Application

ZEL-2P
ZEL-3P
ZEL-4P
ZEL-6P
ZEL-8P

R 1/4
R 3/8
R 1/2
R 3/4
R1

L

Mass (g)BrassStainless
steel

3467
117
264
359

3263
109
248
339

Dimensions (mm)

L
39
44.5
52.5
68.5
76.5

C
26.1
32
36.8
4856

øD
1925
32
39.5
46

H (WAF)
Hex.17
Hex.23
Hex.29Hex.36
Hex.42T
Rc 1/4Rc 3/8Rc 1/2
Rc 3/4
Rc 1

Model

Application

ZEL-2S
ZEL-3S
ZEL-4S
ZEL-6S
ZEL-8SR 1/4
R 3/8
R 1/2R 3/4
R1

Mass (g)BrassStainlesssteel

133
255
404
829
1406

125239382
7841326

Dimensions (mm)L( 56 )
( 66 )( 76 )( 95.5)(114.5)

øD28
35
4255
65

H (WAF)
Hex.21
Hex.27
Hex.32
Hex.42
Hex.50T
Rc 1/4Rc 3/8Rc 1/2
Rc 3/4
Rc 1• The photos above show stainless steel model ZEL-8P and ZEL-8S. The profiles of brass couplings are the same as those of the stainless steel couplings.

M a in Features
Unique seal design reduces both liquid spillage and air ingress
To compare with Nitto SP Cupla Type A.
Volume of spillage:
about 96% less vs SP Cupla Type A
SP Cupla Type A

Connected

Volume of air ingress:
about 94% less vs SP Cupla Type A
ZEROSPILL Cupla

Disconnected

Connected

Disconnected*blue colored water is used to show
volume of spillage clearly.

Reliable zero friction valve
New valve design offers smooth zero-friction movement
resulting in reduced chance of malfunction caused bydeterioration of valve parts.

Push-to-connect design

One-hand easy operation

Just push the plug into the socket for simple and secureconnection.
This reduces connection time and improves efficiency.

Just push the plug into the socket

Simple and secure connection

Accessory

Cupla Adapter
for Braided Hose
Connection

Can be screwed into
Cuplas with female
threads, 3/8", 1/2", 3/4"

See page 145 for the details.
Before use, please be sure to read “Safety Guide” described at the end of this book and “Instruction Sheet” that comes with the products.

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