Humphrey offers you a variety of mechanical valves within the unique construction of the classic Diaphragm-Poppet Series, including cartridge style, insert valves. Choose diaphragm-poppet valves for your difficult, critical applications when reliability and tight sealing are required. The lineup includes roller ball, roller cam and plunger actuation. These valves are simple, highly reliable and unaffected by a variety of media, and media conditions. Available as 2 or 3-way types in 1/8 and 1/4 inch orifice sizes.