Hydronic Gauge; Pressure Gauge Type Tridicator; Minimum Pressure 0 PSI; Maximum Pressure 75 PSI; Mounting Type Stem; Display Type Dial; End Connection 1/4 Inch Threaded; Connection Location Center Back; Dial Diameter 2-1/2 Inch; Temperature Rating 70 to 320 Deg F; Shank Size 2 Inch; Insert Size 1 Inch