For decades, MWH has been worldwide one of the most important manufacturers of valve systems. Its reputation for excellence is based on a wide product range produced to superior quality standards. Engine manufacturers and operators constantly praise MWH products for their outstanding performance and value.

MWH operates worldwide. Most of the manufacturing process as well as all activities are controlled from the headquarters in Halver, Germany. Further production sites are located in Grossbodungen (Germany) and Pusan (Korea).

MWH runs service centers in all major ports of the world, providing smooth reconditioning and the exchange of components. In addition, the American branch "Maerkisches Werk Northern America" ensures direct contact with our customers in North America.

• Ship engine, four-Stroke valves
• Ship engine, Valve Rotator Turnomat
• Ship engine, Valve Seats, Springs & Guides
• Ship engine, Kits & Cages
• Ship engine, Cylinder Head & Valve Cage Reconditioning
• Ship engine, Two-Stroke Exhaust Valves
• Ship engine, lifecycle services