Yk-150 series mud manometers are mainly used for measuring dynamatic pressure , ... ,120MPa Accuracy: Grade 1.6 , 2.5 Case: 5'' Yk-150 series mud manometers are mainly used for measuring dynamatic pressure ... .4.V.H.5ConnectingR 3/2, R2, NPT2StandardJB/T6804 YK-150 Mud Pressure Gauge