UB Blocks

Wabtec Freight Car Products Blocks brake control freight wagons

Different types of UB blocks are compact units designed for brake control on freight wagons. All pneumatic control elements such as: distributor valve MH, working chamber, ON/OFF cock and one or two load relay valves AKR are mounted on a central brackets type SK 1 or SK 3. Fitting of other types or relay valves D10 or electric valves is possible by modifying the supporting brackets. Three basic types exist: UB AK 1 designed for freight wagons in "S" regime