|
|
 |
GENERAL INFORMATIONS FOR "LSF" TUBE FITTINGS |
| Lung Shun Fa tube fittings are applied to high pressure,
impulse, vibration, vacuum and temperature. The tube fittings
has been specifically designed for use on instrumentation,
process & control systems and equipment employed in
chemical, petroleum, fluid power, electronic and pulp
& paper plants. |
| |
CONSTRUCTION OF "LSF" TUBE FITTINGS |
| "LSF" tube fittings, a leak tight seal is
achieved through the simple action of tightening the nut
against the body. This provides the axial thrust required
to compress the captively held ferrules against the O.D.
of the tubing. The staged swaging action of the ferrules
during the compression phase of make-up provides the key
to LSF's sealing superiority. |
| |
SUITABLE TUBING MATERIALS |
Stainless steel tube:
1.TP304 and TP316 of ASTM A269 or A213 or equivalent.
2.TP304 and TP316 of JIS G3459 or equivalent.
3.The wall thickness selection should be based
on the operating pressure, temperature and shock conditions.
Fully annealed tubing is recommended. Stainless steel
tubing having a hardness of less than Rockwell B90 should
be used.
4.Specific recommendations - See
Table 1. |
| See Table 1 |
Allowable Working
Pressure
|
Unit:kg/cm2
|
 |
|
 |
|
|
Tube
O.D.
|
Tube Wall Thickness in Millimeters(Inches)
|
|
0.71
(0.028)
|
0.89
(0.035)
|
1.0
|
1.25
(0.049)
|
1.5
|
1.65
(0.065)
|
2.0
|
2.11
(0.083)
|
2.41
(0.095)
|
2.5
|
2.77
(0.109)
|
3.0
|
3.05
(0.120)
|
|
1/8
|
697
|
886
|
995
|
|
|
|
|
|
|
|
|
|
|
|
3/16
|
446
|
572
|
652
|
830
|
|
|
|
|
|
|
|
|
|
|
1/4
|
325
|
416
|
474
|
607
|
741
|
820
|
|
|
|
|
|
|
|
|
5/16
|
|
326
|
371
|
474
|
580
|
644
|
|
|
|
|
|
|
|
|
3/8
|
|
268
|
304
|
388
|
474
|
527
|
|
|
|
|
|
|
|
|
1/2
|
|
197
|
223
|
283
|
345
|
383
|
474
|
503
|
|
|
|
|
|
|
5/8
|
|
|
|
221
|
271
|
300
|
370
|
393
|
455
|
474
|
|
|
|
|
3/4
|
|
|
|
183
|
223
|
247
|
304
|
322
|
373
|
388
|
434
|
|
|
|
7/8
|
|
|
|
156
|
189
|
209
|
254
|
272
|
315
|
327
|
366
|
|
|
|
1
|
|
|
|
135
|
164
|
181
|
223
|
236
|
272
|
283
|
317
|
346
|
352
|
|
|
 |
|
 |
• Allowable stress = 13.125 kgf/mm2
,Temperature = -29 °C ~ 37.8 °C.
• Factory of Safety = 4, Considering Tensile Strength to
be 52.5 kgf/mm2 at room temperature. |
| |
ASSEMBLY INSTRUCTIONS |
|
1.Insert front and back ferrules onto the tube
as shown in Fig.-1.
Extra caution is required so as not to reverse them.
Then insert the tube into the center of the nut until
it bottoms in the fitting body as shown in B of Fig.-1.
Caution: Tubing ends should be cut relatively square
and burrs removed. Where practical, the use of a tubing
cutter is recommended.
2. Tighten nut as much as you can by finger.
This position is referred to as " finger tight
position."
3. Hold the fitting body by holding its hex with
a spanner and tighten the nut with another spanner an
additional 3/4 turn for sizes 1/8" through 3/16"
and 1-1/4 turn for sizes 1/4" through 1".
|
|
|
|
Size 1/8" ~ 3/16"
only 3/4 turn from finger tight
is necessary to seal and will result in
additional remakes of the fitting.
|
|
|
Size 1/4" ~ 1"
1-1/4 turns from finger tight.
|
|
|
| Note: |
All assembled fittings in this catalog
are shown in the finger tight position.
Tube wall thickness is 0.89mm. |
| |
ORDERING INFORMATION |
| 1.Tube to Pipe ends: |
L
|
-
|
MC
|
|
4 |
-
|
4T
|
| |
1.
|
|
2.
|
|
3.
|
|
4.
|
1. LSF designated as "L"
2. Name of Fittings
3. Tube O.D.
4. Pipe thread size
| Example: |
L-MC 4-4T Male Connector 1/4" OD-1/4"
PT |
|
L-MC 4M-4T Male Connector 4mmOD - 1/4"
PT |
| 2.Tube to Tube ends: |
L - U4 Unior 1/4" OD |
| |
L-U 4M Union 4mm OD |
|
|
| |
Lung Shun Fa Enterprise Co., Ltd. |
 |
| TEL:+886-7-7109136 |
FAX:+886-7-7109012 |
Factory Address:No.223, Lising Rd., Fongshan City, Kaohsiung County 830, Taiwan |
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