Humphrey's 3/4-inch pipe QE5 large-sized quick exhaust valve is highly versatile. This product redirects exhaust air to its high-flow 3/4-inch pipe exhaust port by sensing pressure differentials. It can function as a shuttle valve or achieve excellent check or flow control capabilities by adding plugs or orifices. The valve body is compact yet offers high flow rates. The molded shuttle outperforms competitive plate-type designs.