VALLEY FORGE & BOLT SPC4 406A User Manual page 3

VALLEY FORGE & BOLT MANUFACTURING COMPANY
4410 W. Jefferson St. • Phoenix, AZ 85043 • USA
INTRODUCTION TO VALLEY FORGE & BOLT LOAD INDICATING FASTENERS
Founded in 1974, by Ronald Clarke, Valley Forge & Bolt Mfg. Co. continues to maintain core
values as a domestic manufacturer of the highest quality, state-of-the-art fasteners, and services
in a timely and efficient manner. We began our legacy in controlled bolting supplying the mining
industry with an improved design of forged liner bolts. Our capabilities expanded to forging and
machining specialty fasteners and the innovation of our load indicating fasteners.
throughout the world, including, oil and gas, refining, chemical, power, heavy equipment, steel,
and transportation have appreciated our efforts in continuous improvement.
Critical joints in any application require controlled bolting throughout their service life to maintain
performance, enhance safety, simplify maintenance and inspections, and improve uptime.
However, the term is more often applied to installation than to the service life of the bolted joint.
Valley Forge & Bolt's family of load indicating fasteners makes it possible to monitor bolted joints
after installation and to always know fastener tension, regardless of the service interval.
We are constantly developing new technology to optimize the integrity of the bolted joint. Our
load indicating fasteners, Maxbolt™ and SPC4™, meet ASTM F-2482 standards to measure direct
elongation or tension with an accuracy of +/-5% of minimum yield.
Maxbolt™ and SPC4™ fasteners directly measure fastener tension by built-in gages with the
Maxbolt™ or by local or remote meters with the SPC4™ systems. Any tightening tool – hydraulic
electric or a hand wrench may be used to install the fasteners to achieve even and optimal
fastener load. These load indicating fasteners allow users to measure fastener load during
installation, maintenance intervals or inspections and monitor load while fasteners are in service.
Using the family of SPC4™ Meters, fastener load data is directly visible locally with analog and
digital hand-held meters or transmitted through wired or wirelessly meters to a local or remote
monitoring system. Tightening tool "shut-off" control is also available.
SPC4™ SYSTEM • MODEL 406A • USER'S MANUAL
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PHONE: (602) 269 - 5748
WEB: www.vfbolts.com
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