The Ingersoll Rand ARO PF20X series metallic flap valve offers flows up to 172 GPM, and can handle 2" semi-solids and 3/4" solid materials. They can be ordered in aluminum, stainless steel and cast iron versions, with optional plated steel or stainless steel hardware. They operate continuously without malfunctions, and efficiency is guaranteed by a Simul-Shift™ valve, offering positive, reliable shift signal.