At ‘fourwents’ we feel every application deserves its own optimal solution. That's why we have developed the widest line of rotary unions and syphons. There is ’fourwents’ product to meet almost every application. Whatever the process, speed, medium or other application condition, we offer self supported. Rod supported and bracket mounted rotary unions for steam, cooling water, hot oil, air, gases and other media. Stationary syphon systems for all speed ranges and other accessories.