1) National inspection data (performance reference)
"Jue Wan" 4" Class 600 sample machine sent to the National Valve Quality Supervision and Inspection Center (Zhejiang), with basic error of 0.7%, hysteresis of 0.7%, and dead zone of 0.4%, far exceeding the national standard (≤1%).

2) Parameter standards (selection reference)

3) Dimensions (Model Selection Reference)

