Page 69 - 4300 Catalog Cover.pdf

C11 Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
Triple-Lok® 2 37° Flare Tube Fittings
4300 Catalog
clamping on the 37° taper provides ameasure of elasticity to the
joint helping it to resist loosening under vibration. The clamping
force results in a small radial load that tends to deform the fitting
nose radially. The resistance of the nose to elastic deformation
provides a constant preload (similar to a lockwasher) keeping
it tight.
The clamping forceprovidedby thenut resists theopposing force
of the fluid under pressure. The joint remains leak tight as long
as the clamping force is higher than the opposing pressure load.
Properly assembled Triple-Lok 2 fittings with appropriate tube
will seal consistently under pressure until tube bursts.
Sealing in Triple-Lok 2 fittings takes place as the o-ring is com-
pressed between the fitting body and the inside of the tube
flare. The O-ring should be inspected at each disassembly
and replaced when necessary. Seamless or welded and drawn
fully annealed tube is recommended for Triple-Lok 2 fittings for
ease in flaring and bending. Certain types of harder tubes that
are not fully annealed may not be suitable for flaring due to the
potential for immediate or long-term cracking of the tube flare.
For specific tube type and wall thickness recommendations,
please se e Table C7.
Assembly and Installation
Assembly and installation instructions are the sameasTriple-Lok
2 and located in Section T.
International Acceptance
To illustrate the versatility ofTriple-Lok 2, refer to Fig.C6.A single
37° fitting body will accept both inch and metric tube sizes by
simply changing the sleeve. Thus, a dedicated line of sleeves
is offered for inch and metric tube. The universal tube nut and
fitting body is used with either inch or metric tube, thus saving
on component costs and making the Triple-Lok 2 fitting more
versatile. Also, the fitting body without the nut and sleeve is very
popular as a hose adapter.
Table C6 illustrates an even clearer picture of the flexibility of the
Triple-Lok 2 Soft Seal 37° system. It shows every “convertible
sleeve” connection for the 37° flare design.For example, if 25mm
tube is being used, a –16 (1”) Triple-Lok 2 37° Soft Seal flare
fitting together with a 25mm (TXSS25) sleeve and a standard
–16 (1”) flare fitting nut would be all the necessary components
to connect and seal a 25mm flared tube assembly.
Tube Wall Thickness – Inch and Metric
Minimum/Maximum tube wall thickness is based on the pres-
sure holding capacity of the fittings and subject to maximum
wall thickness limitations.
Inch Tube
Metric Tube
Hose Assembly
Fig. C6 – Triple-Lok 2’s Adaptability to Inch Tube, Metric Tube, or
Hose Assemblies
Table C6 – Triple-Lok 2 Convertible Sleeve Connections
Inch
Sleeve Metric
Sleeve
Universal
Tube Nut
Universal
Triple-Lok 2
Body
FITTING
DASH
SIZE
TUBE
O.D.
METRIC TUBE
SLEEVE
PART #
NUT
PART #
-4 6mm TXSS6 4BTX-SS
-5 8mm 5 TX-SS 5BTX-SS
-6 10mm TXSS10 6BTX-SS
-8 12mm TXSS12 8BTX-SS
-10 14mm TXSS14 10BTX-SS
-10 15mm TXSS15 10BTX-SS
-10 16mm 10 TX-SS 10BTX-SS
-12 18mm TXSS18 12BTX-SS
-12 20mm 20-12 TX-SS 20-12BTX-SS
-14 22mm TXSS22 14BTX-SS
-16 25mm TXSS25 16BTX-SS
-20 28mm TXSS28 20BTX-SS
-20 30mm TXSS30 20BTX-SS
-20 32mm TXSS32 20BTX-SS
-24 35mm TXSS35 24BTX-SS
-24 38mm 24 TX-SS 24BTX-SS