Air Inc. offers a range of pneumatic valves. Their Humphrey TAC pneumatic valves can be operated by pilot or manual/mechanical operators, while the Humphrey 310/410 direct acting solenoid valves (2-, 3-, or 4-way, Cv=0.12 to 0.14) accommodate air, vacuum or inert gases up to a flow of 100 psig.

Conant Controls offers both pneumatic selector valves and valve operators. Included in their selection are Chemselect corrosion-resistant control valves available in various themoplastics, with pressure ranges of either 0-80 or 0-125 psi; and control selector valves with stainless steel or Teflon rotors. Multiport stack control valves are available with choice in number of stacks (2 to 5) and drillings (2- to 5-way), at 150 psi maximum pressure standard. The company also sells venting valves in aluminum, brass, and 316 stainless steel, which have maximum pressures between 250 and 1,000 psi.

Webb Kentrol/Sevco is a distributor and authorized assembler for many control and automated valves for the process and power industries. They offer quarter turn valves such as ball valves (high pressure, metal seating, and ceramic lining optional), butterfly valves, and plug valves; linear valves such as balanced and unbalanced valves, severe service valves, and steam conditioning valves; and pneumatic, electrohydraulic, and electric actuators.