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![Process Gas Check Valve](https://content2.smcetech.com/image/medium/AP64.jpg)
Process Gas Check Valve
The AP64 is an all welded and springless check valve. The unique ultraclean design has only one moving part and O-ring. The check valve provides reverse flow protection for N2 purge gas introduction and other applications.
![Vacuum Generator](https://content2.smcetech.com/image/medium/AP7.jpg)
Vacuum Generator
There are four vacuum generator models to choose from - two simple vacuum generators, AP 7 and AP70, and two modules, AP71 and AP72, which include vacuum generator, N2 inlet shut off valve and N2 inlet check valve. The modules provide a compact and cost effective solution for vacuum generator installations. The individual vacuum generators provide a variety of configurations. The devices are designed for use in gas delivery systems to improve efficiency when venting for purging.
![Flow Switch](https://content2.smcetech.com/image/medium/AP74.jpg)
Flow Switch
The AP 74 and AP 74B are safety devices to detect excess flow in UHP gas delivery systems. The switches are available with a wide variety of trip points and configurations. An online selection guide makes choosing the proper switch for a given gas, pressure and maximum flow rate as simple as a few key strokes.