ME Button Valve 1/4 inchThe ME valve is a push button gas pressure valve designed to apply pressure to the gauge only when pressed. In its normal state, the pressure gauge remains relieved of pressure. This design extends the lifespan of the gauge and minimizes the risk of incorrect readings. For example, if dirt accumulates, a conventional gauge may become blocked at an incorrect pressure value, whereas the ME valve prevents such issues. View Datasheet: MG Pressure Gauge