704, Kent Heights, Vardhaman Nagar,Nursing
Lane, Malad (W.), Mumbai - 400 064. India.
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Hydraulics
Fittings :
Single Ferrule Fittings
“J. J.” high pressure steel fittings are
manufactured to DIN 2353 specification and
ISO 8434 – 1 for ease of Interchangeability.
These fittings are available for different
pressure rating from 100Bar to 630Bar
Type
Flare
less Bite Type (Single Ferrule) Weld
Nipple Type
Series
LL
(Very Light),
L
(Light), S (Heavy)
Size
4mm to 42mm, 1/8”OD to 2”OD, 1/8”NB to 2”NB
Material
Steel,
Stainless Steel, Brass (From extruded
bar or forging)
Pressure
Ranging
from 100Bar to 630Bar depending on
type and size
Material
Steel, Stainless Steel, Brass (From
extruded bar or forging)
Standard
DIN 2353 / ISO 8434 - 1
Surface Treatment Top
Bottom Plate
Steel
–
Zinc Coated (A3C) Phospatised or
Trivalent Cr.
Stainless Steel
–
Electro polished, Nut Silver Plated to avoid
galling.
Brass
–
Natural
THEORY
OF OPERATION
“J. J.” Single Ferrule Fittings is a three piece
design consisting of a body portion, a coupling
nut and a ferrule. During the assembly the nut
is progressively tightened causing hardened
ferrule to slide along the inner conical seat of
the body and grip the tube. Tightening the nut,
ring deforms due to 24 degree cone of fittings
and bites into the steel tube, producing deep
cut on the tube. The cut is visible on the outer
diameter of the tube. This cut on the tube acts
as metallic interlock and makes the joint leak
proof at high pressure and under vibration
ASSEMBLY
Before
Assembly
After
Assembly
RECOMMENDATION
Use
Seamless tube as per Standard ST37.4 or DIN
1630 – 2391 for proper biting on tube.
