Vaccon is a manufacturer of the VCV Series of vacuum check valves designed for vacuum applications that require high flow and low cracking pressure. Maximum vacuum flow, with zero flow restriction, ranges from 4.0 SCFM (113 lpm) to 30.0 SCFM (849 lpm), depending on which model you choose. Cracking pressures range from 4.0 mbar to 10.7 mbar. All vacuum products are made of anodized aluminum body material. Vacuum check valves seal and hold vacuum for clamping, pick and place and vessel evacuation applications, and offer high flow capacity for rapid evacuation.

Air Inc. is a supplier of PneuTrol inline check valves in 10 different models. Sizes range from 1/8" NPT to 1/2" NPT. Types can be either metal-to-metal seat or soft seat. Materials available include brass, stainless steel and steel.

Watts supplies WATTS ACV non-surge check valve in the models F118-3, F1118-3, F118-4 and F1118-4. The F118-3 and F1118-3 non-surge types control pipeline surges in sizes 4 inches and smaller. F118-4 and F1118-4 models are available in sizes 6 inches and larger.

Asahi America makes check valves, such as swing type, with flanged connection in sizes of 3/4" to 8". True union ball designs come in sizes from 1/2" to 2", and single union ball types come in sizes from 3" to 4".