The ultimate protection from manhole explosions
The SWIVELOC™ Manhole Cover Restraint System is the latest innovation in manhole cover restraint and safety. The SWIVELOC Manhole Cover Restraint System addresses theft, vandalism, sabotage, acts of terrorism and unauthorized entry.
Buildup of explosive gasses can cause manhole explosions powerful enough to launch the heavy cast iron manhole covers several feet into the air, with incredibly dangerous consequences. The patented SWIVELOC system allows the exploding gasses to be vented, while protecting the structural integrity of the manhole structure, and ensuring the safety of nearby people and structures.