No.340710

O.N. Fitting Work Execution Instructions
Construction of Nice Joint

type:(1) Operation
Pipe cutting

type:(2) Operation
Pipe deburring

type:(3) Operation
Attachment setup

type:(4) Operation
Pipe insertion○= stainless steel pipe cutting machine○= Use a round file,○= Use spanner and screwdriver○= Insert the pipe all the way until it hits.

122J-S, band saw, metal saw, orchip saw used

Detailed view of A
(Constructed to preventany drop of rubber packing)
Conical washer(with mechanism to prevent cap
nut from being left untightened)

ARubber packing

After being
tightened○ = standard operation; × = defective example

half round file and/or reamer.

contained in the toolbox.

Pipe

Stainless steel pipe cutting
machine 122J-SReamer○Deburring inner andouter surfaces

Screwdriver
Cap nut

Type NE5

Scratch×Pipe

Cap nut

It reduces the inner diameter,
making it impossible to fit into theguide rod.

×= Any insufficient insertion may cause
Type NE4

Rubberpacking

Section ofSUS pipe as cut incircumferential direction

Pipe enlargement
rubber×○×

×= Do not use a pipe cutter.
Colored surface(304: blue, 316: red)○

Back-up ring○

Guide rod

Pipe enlargement rubber

Scratch×

Jointmain body

PipeDeburr it to an extent
that the surface
is not scratchy to touchwith cotton work glove.

Outer burr: Rubber packing
will be damaged, causing leakage.
Inner burr: Causes scratch
on the pipe enlargement rubber.

○

Eye

○

×= If the deburring is insufficient:

Before being
tightened

○

Files

Hand tightening alone is unacceptable‼
Tighten it securely.

Yoke

○

* The system causes
no outer burr.
(Equipped with inner surface reamer
intended for inner burrs)

Hand-tighten the cap nut as
far as it goes.

Type NE3

×= Hand tightening will make the pipe

enlargement defective.

a bend in piping and/or leakage.
Insufficient hand-tightening of nut
may cause defective pipe enlargement,resulting in leakage.

type:(5) Operation
Pipe enlargement

Operation type:Operation type:(6) Enlarged
section measurement (7) Rubber packing direction

type:(8) Operation
Cap nut tightening (equipped with a mechanism to prevent cap nut from being left untightened)○= Type NE5 Once the buzzer beeps and○= Pass if the enlarged section stops○= Tighten until the conical washer becomes upright,

light illuminates, take your finger off the button.

on the No-go side.

Motor capacity = 400 W, power supply 100 VAC(1) Conduct the inspection when replacing
the attachment.
(2) Conduct it once for every 50 times.

* It may be 320 W.
Check it on the nameplate.
Red light○= Fitting onto the joint main body

The rubber packing will not drop since the joint
is constructed to prevent the packing fromdropping. However, be careful of the directionof the packing when replacing it.

Pipe enlargement rubber is consumable(with service life of about 400 times).

○

Go/No Go gauge○○Buzzer beeping(No go)Go side通(Go)Fingerafter a change in the hydraulic sound.

○= Type NE3 Once you hear a sound “click, click, click,”take your finger off the button and press the return switch.
×= If the button is released on the way,
it will cause an insufficient pipe enlargement,
potentially causing leakage.

↑Jointside

Pipeside

No-go side

止○= Type NE4 Keep the button pressed for 2-3 seconds↓

Go/No Go gauge

Pipe

Pipe

×= Fail if the enlarged section passeson the No-go side, because
it may cause leakage.
Replace the pipe enlargement rubber.
Re-inspect the tightening of the tool.

Note: See the work execution manual for further details.

×= If fitted in reversed direction, the packing will decreasein the service life, potentially resulting in leakage.
If the packing is inserted as fitted onto the pipe,
it may be pinched, potentially causing leakage.
××

and the blue color will become hardly visible.

(When the cap nut is tightened, the gap between the conical washer
and the joint main body is 0.1 mm maximum.)1. Any insufficient tightening will cause a gap
between the cap nut and the end surface ofthe joint, which will, under any heat applied
to the joint, cause the rubber packing to
expand and escape to the gap between thecap nut and the joint end surface from thepacking box, eventually causing leakage.
Tightening
2. When adjusting the angle of the joint or thevalve, do it after the tightening.
Rotating the pipe with the nut Conical washer(with mechanism to prevent the cap nut
Joint
hand-tightened or insufficiently from being left untightened)
main bodytightened will twist the rubber
Rubber packing
packing, potentially causing
until closeleakage that cannot be Tighten
contact madedetected by the pressure test.

×= Insufficient tightening

Conical washer insufficiently rising
Cap nut○×Tightened

Insufficiently
tightenedcauses leakage.

O.N. INDUSTRIES LTD.

Handtightening

3235-2, Kamitanomura, Tsuyama City,Okayama Pref.
Te l : 0868-28-0171 (representative)
Fax: 0868-28-4254

Gap formed,
producing the cause of
escape due to theexpansion of rubber
Stainless steel pipe

Web site URL: http://www.onk-net.co.jp/
Email address: onk@onk-net.co.jp