Hills-McCanna Model 500 Diaphragm Valve, 1-1/4", is a diaphragm-style valve from Hills-McCanna used to regulate liquid flow in piping systems. In a diaphragm valve, a flexible diaphragm deflects against a seat to open and close the flow path, providing positive shutoff and throttle control without relying on a ball or plug. The Model 500 designation identifies this specific Hills-McCanna valve series and its 1-1/4 inch port size, facilitating connections to standard piping. This valve type is favored in applications where smooth flow control, reliable sealing, and ease of cleaning are important in liquid-handling lines.
