The sun engineering industries manufactures & introduces self-dependent rotary pressure joints that are used to allow stream or fluids into paper machine, textile machines, calendars & identical machines with rotating, heating or cooling cylinders, rolls or drums. They are specifically fit for higher pressures & operating speed. A syphon elbow can be furnished in sizes ΒΌ " through 1. The standard joint is manufactured with body & head of close grained cast iron, with additional heavy iron pipe size nipple & plated spring. They are specially suggested for use on open gear paper machines. They can be used on any machine using heating & cooling cylinders, rolls or drums.