The bronze diaphragm is designed for better protection on incidental overpressure. Intended for low-pressure applications only. Black steel case. Cannot be recalibrated.
Low Pressure Diaphragm 2-1/2″ Gauges
![](https://yellowjacket.com/wp-content/uploads/2015/02/low-pressure-diaphragm-212-gauges-968x536.jpg)
The bronze diaphragm is designed for better protection on incidental overpressure. Intended for low-pressure applications only. Black steel case. Cannot be recalibrated.