Hydraulics for Tunneling

Operating equipment underground is a demanding job. Dynex checkball pumps and valves are used on tunnel boring machines (TBM) and high force pipe jacking equipment. The unique capabilities of the Split-flow® pump allows customers to provide accurate control with simplified systems. The high pressure capability combined with split-flow provides a unique solution for pipe jacking equipment. Customers around the world rely on Dynex for our proven performance and trusted service.

Tunnel Boring Chunnel
Tunnel Boring
Pipe Jacking
Pipe Jacking


  • Tunnel Boring Machines
  • High Force Pipe Jacking
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