Specialty Mfg. Co. produces brass, stainless steel, and plastic poppet check valves. The majority of the brass and stainless steel poppet check valves feature an economical, general use design that provides a positive seal down to approximately 1/2 psi back pressure. One series is designed for high pressure up to 5,000 psi. The majority of the plastic poppet check valves feature a maximum operating pressure of 125 psi, and are used for a wide range of air and fluid applications.

Doering Company manufactures a number of 2-way, 3-way, and 4-way poppet valves. The 2-way poppet valves are available in normally open or normally closed configurations, and as air pilot, hydraulic or gas (high pressure) pilot, or manually-operated types. The valves are available with GPM ranging from 1-1/2 to 10.