top of page
Flange Boss Flange Spreader

Flange Boss Flange Spreader

Flange Boss In The Field

Flange Boss In The Field

Flange Boss Mechanical Flange Spreader

Safe and easy to use, the Flange Boss spreads flanges evenly and safely during gasket changes and other applications.


Flange Boss flange spreaders actuate mechanically, pneumatically and hydraulically. The rotating Cam-Wedge design with versatile hex drive attaches to the flanges through the bolt holes, securing flange spreaders to piping that will not slip out.


Flange Boss spreaders are available with 25,000 lbs. of spreading force, and fit 1/2″ to 24″ flanges from ANSI 150 lb. to 2500 lb., or DN 15 – 600 (refer to DIN EN ISO 9002 and 6708).


Simply put, the Flange Boss is one of the world's safest and toughest flange spreaders, and offers the user the greatest choice of safe operating mechanisms.

3 Series Specific Models  

Works on any 1/2"-24" Diameter ASME Flange



FBX 150-300 - All 150-300 Series Flanges


FBX 400-600 - All 400-600 Series Flanges


FBX 900-2500 - All 900-2500 Series Flanges



bottom of page