Profile: Reintjes & Hiter Co., Inc. offers thermal expansion, flow control, vibration isolation, transfer of corrosive fluids, blower/central vacuum systems, and steam systems. We specialize in the assembly and fabrication of valves, actuators, controls, lined pipe, metal and Teflon hose. VMC's P-series curbs & R-series rails are specifically designed for rooftop unit vibration and seismic & wind control. They are fully adjustable and custom-fit. It incorporates roof curb & spring isolation into one complete structure.