Molnar SL02, Установка, эксплуатация и обслуживание

Страница: 15 / 22

Page 15 of 22 Rev B
–
Dec 2009
Assembly Instructions
1. Cut the tube to length and file ends square.
2. Remove internal and external burrs from tube end.
3. We always highly recommend that joints are pre-made whilst the coupling body is
held firmly in a bench vice.
4. Ascertain that all the detail parts of the coupling are suitably lubricated, especially
the internal body cone, the rear of the ferrule and the internal thread of the nut.
The lubrication process is recommended on all fittings, however, on stainless steel
couplings the use of a quality lubricant is imperative. Betalube, a copper based
paste is highly recommended and available from Betabite Hydraulics or your local
distributor. Please note after assembly, fittings to be used on Oxygen lines should be fully
degreased.
5. Slide the nut onto the tube, followed by the ferrule, the open end of the nut should
be towards the end of the tube, and similarly, the cutting or smaller end of the ferrule
should point towards the tube end.
6. Present the tube, nut and ferrule to the coupling body, making sure that tube passes
cleanly through the nut and ferrule & butts firmly against the step (abutment face)
provided in the coupling body. Screw the nut onto the coupling body until finger tight.
7. Hold the tube in one hand and with the correct sized spanner in the other hand,
tighten the nut until the ferrule is felt to just grip the tube. This point is determined by
rotation or slightly rocking the tube. From this point, the nut should be tightened 1 ¼
to 1 ½ turns from the initial ring grip to obtain a fully effective cutting action.
On larger sizes of fitting, an extension to the spanner is highly recommended to
maximise leverage and minimise effort.
8. If the nut is now removed, the ferrule will have cut its own seating on the tube and
whilst it will be f ound to rotate, it cannot be moved towards the tube end. The ‘joint’
may now be re-assembled, by re-tightening of the nut until significant resistance is
felt and then increase for a further ⅛ to ¼ of a turn. The above procedure must be
followed closely to ensure a safe and successful joint.
9. Betabite fittings correctly made can be broken repeatedly, when not under pressure
and re-made without affecting their pressure tightness and leak-proof quality
Pressure rating tables for your safety, convenience and peace of mind
Imperial sizes Metric sizes
Hydraulic Gas (L) Light series 6 to 18mm 315 bar (4,568 psi)
> 1” OD or ¾” NB 690 bar (10,000 psi) 345 bar (5,000 psi) (L) Light series 22 to 42mm 160 bar (2,320 psi)
> 1 ¼” OD or 1” NB 552 bar (8,000 psi) 276 bar (4,000 psi) (S) Heavy series 6 to 14mm 630 bar (9,135 psi)
> 1 ½” OD or 1 ¼” NB 414 bar (6,000 psi) 207 bar (3,000 psi) (S) Heavy series 16 to 30mm 400 bar (5,800 psi)
www.betabite.co.uk