No.662205-EN

Pipe enlarging type fitting for light gauge stainless steel pipe
High-end piping

O.N. Fitting

No use of heat or flame
No specialized technology required
Not press type fitting♦Structure of Connecting section
Rubber sealingmaterial

Conical Washer(mechanism to prevent cap nuts fromnot being tightened due to forgetting)Aftertightening

A♦Pipe enlarging principle(From φ 15 to φ 54)

StrokeBeforetightening

Check hole

Cap nut
Pipe enlarging rubber
Guide rod

Piston RodEnlargedview(Part A)

PipeCap nut

Main body

Colored surfaceSpacer(Processing toprevent rubberpacking fromcoming off)

CylinderBack-up ring
Yoke

Structure: A cap nut and flange are mounted to the Pipe enlarging principle: Expanding pipe enlarging
expanded pipe end, connected to the fitting.
rubber when compressed load is applied in theRubber packing is inserted into a triangle chamberaxis(arrow) direction with oil pressure.
surrounded by the fitting and pipe to seal out liquid.
The pipe inserted into guide rod is enlarged by aforce where the pipe enlarging rubber expands in thecircumferential direction.

Features  (1) Easy		Easy to install. Not much time is needed to get the required skills.		Easy to avoid forgetting to tighten the cap nut.		Tightening can be checked visually through conical washer.

(2) Quick		Faster processing time with using dedicated pipe expansion machine, anyone can handle theinstallation work easily.		Prefabrication by cutting and expansion of pipes according to drawings can be done in a piping
factory, so assembling a unit and final assembly on site is not so complicated.

(3) Strong		Excellent durability and withstands even huge earthquakes.		Unique structure, pipe enlargement system, proved seismic tests.		The secret is the unique expanded pipe structure and expanding the end of pipe that hasstronger resistance with cap nut.

(4) Light		O.N. Fitting system uses thin wall thickness stainless steel pipe.		Light, easy and amazingly fast.		It is easy to carry, handle and operate even in narrow places, workability is high.

(5) Eco-friendly		Hygienic stainless steel does not create red or blue water due to corrosion of steel pipes.		Stainless steel is environmentally friendly and has a long service life.		As open flames are not used, it is convenient for repairs.
1Cautions in installation  
1. Always keep in mind that the pipe is thin.
*Please connect the next
2. Carefully perform cutting and chamfering.
process with the extension
3. Mount pipe expansion machine parts correctly.
of piping after completely
4. When enlarging the pipe, insert pipe correctly.
tightening cap nut.
5. Keep the correct pipe enlarging amount.
6. Do not forget rubber sealing material.
7. Tighten the cap nut completely.
8. Do not apply an excessive piping stress.
9. Be sure to take measures against corrosion and freezing.
10. Fix the support securely.

Operation procedures with NE40C pipe expander (From φ15 to φ54)  

1.R eferring to the pipe cutting
dimension table, cut the pipe at aright angle to the axis core with ametal saw or band saw.

2.Carefully, remove burrs from boththe inner and outer chamferedsurfaces carefully using reamer,sand paper and grinder.

3.Tighten the cap nut to the yoke.

4.Insert the pipe into the guide rodcompletely.

5.For the pipe expansion work, keeppressing "UP" button until themotor stops.
Then, pressing "DOWN" button aroundtwo seconds to release the pressure.

6.Insert the enlarged pipe into thefitting and tighten the cap nut.

Safety Precautions
Check instruction andinstallation manual before thework.

7.In case rubber sealing material isdropped, be sure to mount it to
the fitting main body.

8.Set the conical washer to a section
where the cap nut side surface
comes in contact with the fittingand tighten the nut until thecolored surface is not visible.

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Products  （Unit : ㎜）

90°Elbowsize
φ 15 / 1.0
φ 18 / 1.0
φ 22 / 1.2
φ 28 / 1.2
φ 35 / 1.5
φ 42 / 1.5
φ 54 / 1.5

Qty per carton
4842302024168Male Adaptersize
φ 15/1.0 × R¹/₂
φ 18/1.0 × R¹/₂
φ 22/1.2 × R³/₄
φ 28/1.2 × R1
φ 35/1.5 × R1¹/₄
φ 42/1.5 × R1¹/₂
φ 54/1.5 × R2

Qty per carton
6456
4830
3228
12Equal Teessize
φ 15 / 1.0
φ 18 / 1.0
φ 22 / 1.2
φ 28 / 1.2
φ 35 / 1.5
φ 42 / 1.5
φ 54 / 1.5

Qty per carton
3636242012106Female Adaptersize
Qty per carton64
φ 15/1.0 × Rp¹/₂56
φ 18/1.0 × Rp¹/₂48
φ 22/1.2 × Rp³/₄30
φ 28/1.2 × Rp132
φ 35/1.5 × Rp1¹/₄
28
φ 42/1.5 × Rp1¹/₂
12
φ 54/1.5 × Rp2

3Socketsize
φ 15 / 1.0
φ 18 / 1.0
φ 22 / 1.2
φ 28 / 1.2
φ 35 / 1.5
φ 42 / 1.5
φ 54 / 1.5

Qty per carton
64564830322812Flange Adaptersize
φ 15/1.0 × DN15
φ 18/1.0 × DN15
φ 22/1.2 × DN20
φ 28/1.2 × DN25
φ 35/1.5 × DN32
φ 42/1.5 × DN40
φ 54/1.5 × DN50

Qty per carton
4444442（Unit : ㎜）

Reduced Elbow

Reduced Tees

Reducersize
Qty per carton42
φ 18/1.0 ×φ 15/1.030
φ 22/1.2 ×φ 18/1.020
φ 28/1.2 ×φ 22/1.224
φ 35/1.5 ×φ 28/1.216
φ 42/1.5 ×φ 35/1.58
φ 54/1.5 ×φ 42/1.5size
Qty per carton36
φ 18/1.0 ×φ 15/1.024
φ 22/1.2 ×φ 15/1.024φ 22/1.2 ×φ 18/1.020
φ 28/1.2 ×φ 18/1.020
φ 28/1.2 ×φ 22/1.212
φ 35/1.5 ×φ 22/1.212
φ 35/1.5 ×φ 28/1.210
φ 42/1.5 ×φ 28/1.210
φ 42/1.5 ×φ 35/1.56
φ 54/1.5 ×φ 35/1.56
φ 54/1.5 ×φ 42/1.5

size
Qty per carton56
φ 18/1.0 ×φ 15/1.048
φ 22/1.2 ×φ 15/1.048
φ 22/1.2 ×φ 18/1.030
φ 28/1.2 ×φ 18/1.030
φ 28/1.2 ×φ 22/1.232
φ 35/1.5 ×φ 22/1.232
φ 35/1.5 ×φ 28/1.228
φ 42/1.5 ×φ 28/1.228
φ 42/1.5 ×φ 35/1.512
φ 54/1.5 ×φ 35/1.512
φ 54/1.5 ×φ 42/1.5

Pipe expander  ♦NE30C-Type♦NE40C-Type

Electrical requirement

Lithium ion battery

Electrical requirement

AC230V

Pipe expansion range

15mm to 28mm (4sizes)

Pipe expansion range

15mm to 54mm (7sizes)

Weight4.3kg

Weight21kg

Warning: Machine designed exclusively for O.N. Fitting system
1. Using these machines for the expansion of mechanical fittings other than O.N. Fitting willcause trouble.
2. Expanding tubes with pipe enlarging machines other than the dedicated ones will affect theperformance of O.N. Fitting.

4Specification  
(1) Scope of usage		O.N. Fitting is suitable for portable water, cooling water, cold and hot water, and compressed
air etc.

(2) Temperature, pressure

Temperature :	from 0℃ (not frozen) to 100℃	Pressure : MAX 20bar(3) Rubber sealing material
Standard product

Front(Pipe side)

Back(Fitting body side)

Material

EPDM

Nominal size

From φ 15 to φ 54 (7 sizes)

Applications

Suitable for portable water, cooling water, cold and hot water,compressed air and etc.

Temperature

From 0℃ (not frozen) to 100℃

AppearanceBlack(4) Scope of applicable pipes		Light gauge stainless steel pipes in accordance with EN10312 Table2 and DVGW W541

(5) Degreased and cleansed products		Degreased and cleansed O.N. Fitting is manufactured separately.

Safety Precautions

When you use our products under conditions other than those specified above, please contact
us in advance. Be sure to read the Instruction manual before installation.

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We are dedicated to develop the seismic-resistant products
After Great Hanshin Awaji Earthquake, Great East Japan Earthquake and Kumamoto Earthquake, we
visited sites where our products had been applied, such as hotels, universities, banks and waste disposal
plants, etc. and confirmed that our products were safe.

High-end piping

O.N. Fitting*It has been verified that our products can stand earthquakes up toabout MSKⅫ by applying acceleration of 2000Gal to pipes.

■Overseas Sales Division(Contact)

Nakamura No.2 Building 3F NO.307, 3-4-18 Kikawahigashi,
Yodogawa-ku, Osaka City, 532-0012 Japan
Tel: +81-6-6829-6002  Fax:+81-6-6829-6866■New Head Office and Factory 3235-2, Kamitanomura, Tsuyama City, Okayama, 708-0011 Japan
Hokkaido Business Office / Tohoku Business Office/ Tokyo Business OfficeOsaka Business Office/ Chugoku and Shikoku Business Office / Kyushu Business Office
Website(English) https://www.onk-net.co.jp/en/index.html
Website(German) https://www.onk-net.co.jp/de/index.html
E-mail  onk@onk-net.co.jp

SafetyPrecautions

Please read through “Instructionmanual” before use to secure
appropriate use of products listed
in this catalogue.

Installation explanation sessions for O.N. Fitting are available.
*The installation will be provided in accordance with instruction manual.
*If you handle our products for the first time, be sure to take an installation
explanation session.
*Please contact to sales representative for the sessions.
*A technical training certificate or certificate of completion will be issued if needed.
*Please apply for the installation explanation session as early as possible.