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STRETCH-TO-LOAD
Developed in 1992, and applied extensively for the past 10 years by
Hytorc, the world's leading hydraulic torque tool manufacturer, Stretch-To-
Load Technology is the first of its kind. An integral part of every product we
design, the technology provides benefits that no other bolting method can
match. As purveyors of the Leakage-Zero Philosophy, Hytorc turned to
Stretch-To-Load Technology to provide refineries, pipelines, and chemical
plants with an assured leak-free startup. Their success with our technology
led to the development of the Tension Gun in an effort to make the
technology more accessible and easier to use.
Five Rules for a Permanently Tight Flange:
We recommend new bolts for maximum joint-integrity, because used or
poorly cleaned bolts may have been overstretched if tensioners were used
on the application, in addition, galling or damage to threads will result in
unknown frictions that will affect load consistency. A washer is necessary
to prevent surface galling which can also result in unknown frictions and
inconsistent load. When using the LoaDISC™ compression washer or
Clamp™ replacement nut you have the surface protection needed and you
provide an axial reaction point which eliminates side load and thus allows
for a straight axial bolt elongation directly to the desired load. For the first
time in history, desired bolt load can be achieved within ±5% without going
over the desired load, thus allowing an attainable bolt load of up to 90% of
yield. A solution is available for all bolting applications.
Developed in 1992, and applied extensively for the past 10 years by
Hytorc, the world's leading hydraulic torque tool manufacturer, Stretch-To-
Load Technology is the first of its kind. An integral part of every product we
design, the technology provides benefits that no other bolting method can
match. As purveyors of the Leakage-Zero Philosophy, Hytorc turned to
Stretch-To-Load Technology to provide refineries, pipelines, and chemical
plants with an assured leak-free startup. Their success with our technology
led to the development of the Tension Gun in an effort to make the
technology more accessible and easier to use.
Five Rules for a Permanently Tight Flange:
- Well Cleaned or New bolts
- A washer to avoid surface galling and control friction
- A tool without side load
- Parallel Joint closure
- Even and accurate bolt load
We recommend new bolts for maximum joint-integrity, because used or
poorly cleaned bolts may have been overstretched if tensioners were used
on the application, in addition, galling or damage to threads will result in
unknown frictions that will affect load consistency. A washer is necessary
to prevent surface galling which can also result in unknown frictions and
inconsistent load. When using the LoaDISC™ compression washer or
Clamp™ replacement nut you have the surface protection needed and you
provide an axial reaction point which eliminates side load and thus allows
for a straight axial bolt elongation directly to the desired load. For the first
time in history, desired bolt load can be achieved within ±5% without going
over the desired load, thus allowing an attainable bolt load of up to 90% of
yield. A solution is available for all bolting applications.
| Optimizing Your Bolting Applications |
| All Rights Reserved © 2008 JETYD of Alabama |