A manual diaphragm valve is made up of a body with two or more ports, an elastomeric disc, and a seat, also known as a “weir” or “saddle.” This manual valve got its name from its flexible disc, better known as the diaphragm, that comes into contact with the valve seat found above the body to achieve a positive seal.
The diaphragm is connected to a compressor through a stud forged into the diaphragm. To allow flow passage, the compressor moves up through the valve stem, while to stop flow, the compressor goes down until the diaphragm is pressed against the bottom of the valve.
A diaphragm valve exhibits leak-tight features which makes it well-suited for food processing, brewing systems, pharmaceutical processes, water systems, corrosive applications, radwaste systems in nuclear applications, and dirty water operations.