Hydronic Gauge; Pressure Gauge Type Tridicator; Minimum Pressure 0 PSI; Maximum Pressure 75 PSI; Mounting Type Stem; Display Type Dial; End Connection 1/2 Inch Threaded; Connection Location Center Back; Dial Diameter 3-1/4 Inch; Temperature Rating 70 to 320 Deg F; Shank Size 1-1/4 Inch; Insert Size 1-1/8 Inch