North American Machine Works distributes safety relief vacuum valves manufactured by Farris Engineering. Valve types include flanged, threaded, pilot operated, and steam.

HyVac Products Inc. manufactures manual and solenoid-type vacuum valves in 2-way and 3-way styles. The solenoid vacuum valves are rated for high vacuum to 10-6 Torr. The valves are electrically actuated and available in 1/4" to 1-1/2" sizes. The manual vacuum valves are rated for vacuum work to 10-4 Torr, and are available in 1/4" to 1-1/2" FNPT sizes.

Vacuum Research Corp. manufactures stainless steel and aluminum vacuum valves that feature round or rectangular ports. Available as gate and angle style valves with port sizes of 1 inch to 36 inches, the valves come standard with 250,000 cycles.

Circle Valve Technologies, Inc. is a distributor for a variety of valve manuifacturers. Available products include the series 9300 series vacuum  to 150 psig plug valves 3-way selector featuring leak proof design, minimum pressure drop, low turning torque and positive position indication.