The Specialty Manufacturing Company (SMC) produces several valves for pneumatic use, including plastic ball and check valves that come in a variety of body materials (PVC, polypropylene, etc.) and seal materials (Buna-N, Viton, etc.); brass and stainless steel ball valves made with inline, right angle, as well as 1-, 2-, 3-, 4-, and 5-way body styles; and brass and stainless steel check valves. Other selections include brass and plastic needle valves; miniature toggle, push-button, and needle valves; selector valves; and related accessories such as pressure controls, swivels, strainers, and filters.

Pneumadyne specializes in miniature pneumatic products, including an array of control valves. They offer, for example, six different sets of 2- and 3-way valves that support flow rates from 2.1 to 33 scfm at 125 psi. They also manufacture sub-micro valves that support a 2.9 scfm flow rate and can accommodate vacuum applications, as well as standard and shut-off 6-position selector valves that allow the actuation of up to six individual circuits from a common input port. Other valves available from Pneumadyne include 4-way, cartridge, 3-position toggle, shuttle, check, flow control, needle, and bleed.