When do you need a diaphragm seal? If there is potential for clogging or your process media is corrosive, viscous or high temperature, diaphragm seals will protect your instruments from being damaged and failing prematurely. WIKA’s diaphragm seals meet EPA fugitive emission requirements. In fact, we pioneered the All-Welded System (AWS) to help eliminate the possibility of a gauge becoming a leak path. In the AWS, an all-welded diaphragm seal and pressure gauge are welded together, providing a true dual containment device to protect against leaks as well as misapplication and tampering. Select an image for product information, or for technical support call 1-888-945-2872.