The Sigelock hydrant and systems for locking hydrants offer cost savings in many different ways. Despite their many advantages, Sigelock products are designed to compete cost-wise with existing products and fit into today’s municipal budgets. Substantially less hydrant maintenance Due to its patented locking clamshell technology, the Sigelock hydrant is more ergonomic and has fewer moving parts to replace. It actually requires less routine maintenance. Regularly scheduled inspections, including oiling, greasing and flushing of hydrants, can be performed by authorized personnel with greater efficiency.