DFT Inc. manufactures three series' of silent check valves, each offering over 50 models to choose from. The PDC Series is specially designed for use on the discharge side of reciprocating air or gas compressors. The GLC Series are spring-assisted, center guided, in-line, flanged silent check valves.

Colton Industries manufactures seven types of silent check valves: cast iron wafer body, cast iron flanged body, cast carbon steel wafer body, cast carbon steel flanged body, cast stainless steel threaded/socket weld body, cast stainless steel wafer body, and cast stainless steel flanged body. The various silent check valves are available in sizes from 2" to 24", 2" to 16", 2" to 12", and 1/4" to 4".

NIBCO manufactures cast iron, silent check valves for hot and cold water, HVAC, steam, gas, and other utility services. The company's line of silent check valves types include twin disc grooved style, flanged globe style, wafer style, twin disc wafer style, and flanged globe style.

Watts Water Technologies Inc. manufactures cast iron silent check valves in 2" to 10" sizes, and cast iron silent check valves with flanged ends. The flanged end check valves are available in sizes from 2" to 6". Both silent check valves types feature maximum pressure of 200 psi, and are used in commercial and industrial HVAC applications.

Specialty Valves & Controls distributes DFT-brand silent threaded check valves, silent wafer check valves, and silent flanged check valves that are used in liquid, gas, or stem applications.