skip to content
Contact Us Translate

Preventing Compression-Ignition Engine Crankcase Explosion In Mining Operations

Even the safest mining operations involve risk. But exposing your crew, equipment, and sensitive mining environments to potential disaster from crankcase explosion in your compression-ignition engines doesn’t have to be one of them.

That’s why Penn-Troy and its BICERA Valve division have been making the best in crankcase explosion relief valves for the compression-ignition engines on mining equipment for more than a half century. It’s also why we’ve never stopped working to bring you an even better valve.

Thousands of BICERA Legacy crankcase explosion relief valves are in use in mining operations around the world today, protecting miners, equipment operators and sensitive mining environments from disaster and damage associated with crankcase explosion.
Today, we’re proud to bring you the most effective flame arrestor available anywhere, ever: the New BICERA Sigma Valve.

Introducing the New BICERA Sigma Valve


 The BICERA Sigma Valve is:

  • Better
  • Smaller
  • Lighter
  • Offers direct, “drop-in” replacement for your existing crankcase explosion relief valves
  • Available in 7 industry-standard (and custom) sizes
  • And, because our proprietary flame-arresting technology is more efficient, it offers you more value.

Imagine a compression-ignition engine explosion relief valve with all those benefits that does more to protect people and property – all at a competitive price.

It’s time to make the switch to the new BICERA Sigma.

Making the best better. That’s what we do at Penn-Troy and BICERA Valve.

Learn More


BICERA Valves Produced
Top Engine Manufacturers Using BICERA Valves
Reports of Death, Injury or Engine Room Damage from Crankcase Explosions
Years’ Experience