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. 


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