|
|
· Permanent
metal-to-metal seal · Intrinsically safe
- No hot work · Qualified to
ANSI/ASME B31 code · Quick and easy
installation · Save up to 50% in
total job costs · Over 1,000,000
fittings installed |
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Our
connector makes field erection and installation of small bore piping systems
fast and virtually error-free. Because installation is intrinsically safe,
fittings can be used in areas where flammable or explosive conditions may
exist, without costly plant downtime. The bottom line? Dramatic reductions in the
time and cost to field or repair small bore piping systems.

|
Pipe NPS |
Pipe Sched. |
Psi (Bar)1 |
Degrees in F (C)2 |
|
1/2"
|
10/40/80 |
5,060
(344) |
-60 to
800 (-50 to 425) |
|
3/4"
|
10/40/80 |
4,470
(304) |
-60 to
800 (-50 to 425) |
|
1" |
10/40/80 |
3,920
(266) |
-60 to
800 (-50 to 425) |
|
1-1/4"
|
10/40/80 |
2,640
(179) |
-60 to
800 (-50 to 425) |
|
1-1/2"
|
10/40/80 |
2,600
(176) |
-60 to
800 (-50 to 425) |
|
2" |
10/40 |
1,840
(125) |
-60 to
800 (-50 to 425) |
|
3" |
10/40/80 |
2,100
(144) |
-60 to
800 (-50 to 425) |

Notes:
1.
On schedule 40 matching pipe to ANSI B31.3 at ambient temperature.
See
specification FS-40 for details.
2.
Contact Us for applications below -60 F (-50 C).
3. See SCD-SS40-PXX for available configurations and
dimensions.
|
Pipe NPS |
Pipe Schedule |
Psi (Bar)1 |
Design Temp. Degrees in F (C)2 |
|
1/2"
|
40/80/160
|
7,670
(521) |
-20 to
650 (-29 to 343) |
|
3/4"
|
40/80/160
|
6,220
(423) |
-20 to
650 (-29 to 343) |
|
1" |
40/80/160
|
5,580
(379) |
-20 to
650 (-29 to 343) |
|
1-1/2"
|
40/80 |
3,950
(268) |
-20 to
650 (-29 to 343) |
|
2" |
40/80 |
3,960
(269) |
-20 to
650 (-29 to 343) |
|
3" |
40/80 |
2,260
(155) |
-20 to
650 (-29 to 343) |

Notes:
1.
On schedule 80 matching pipe to ANSI B31.3 at ambient temperature.
See
specification FS-3000 for details.
2.
See SCD-MAS-PXX for available configurations and dimensions.
3. See "Application Guide" for more details.
ANSI B31
QUALIFICATIONS AND TESTING
Our
both stainless and carbon steel fittings are qualified to the requirements of
the ANSI/ASME B31 pressure piping codes for pressure and fatigue design, and
materials of construction. Extensive mechanical and environmental testing has
demonstrated the mechanical and sealing integrity of the LOKRING connection in
a wide range of applications and environmental conditions.
Pressure-torsion
testing: Seen in the
first picture above, the 1/2" NPS stainless steel test fitting was
subjected to torsional loading high enough to twist the pipe in a spiral
without leakage of the joint. Afterwards, during hydraulic testing, the pipe
ruptured at 22,000 psi (1497 Bar).
Flexural
testing: The 2"
NPS carbon steel (seen in the second picture above) has been deflected to 3x
the yield strength of the matching pipe without leakage. The performance of
this fitting in severe bending, fatigue, and vibration loads is comparable or
superior to a socket weld fitting.
Fire testing: The metal to metal LOKRING seal
remains intact when subjected to extreme thermal loads, including fire (seen in
the third picture above). Both stainless and carbon steel LOKRING fittings have
met the requirements of the API-607, and the ASTM-A1387 (U.S. Navy) fire tests,
and are widely used on volatile and flammable services.
A fitter/helper team can routinely field erect, fit-up,
and install 50-60 of our fittings in a single shift. This productivity more
than doubles the rate at which welded piping systems are typically shop
fabricated and field erected. In addition to a reduction in labor
hours of 50% or more, the labor-hour rate is reduced
by reconfiguring welder/fitter crews to fitter/helper crews, lowering the
composite crew rate by 10-20%. This combination of greater productivity and
lower man-hour rates translates into labor cost
savings of 60% or more (see Fig. ).
Although the cost of a this fitting is higher than the
same configuration of weld fitting, the labor cost
savings more than offset the increased material cost, resulting in a total
installed cost savings of 20-30% or more.

By eliminating welding in the unit, many overhead
costs relating to safety, personnel, equipment and supplies, inspection,
rework, and monitoring can be eliminated or substantially reduced:
In addition, scarce ASME-certified welders are freed
up for large bore pipe or pressure vessel welding.