Body material: Zinc alloy, iron Inside nominal diameter: 12mm Structural style: Spring diaphragm Main export market: Indonesia Flow: 0.6-1m3/ h P( inlet) : 0.03-1.56MPa P( outlet) : 2.80+ / -0.50k Pa We can also do the prodct according to your requirement. When you are interested in it , please feel free to contact us.