... case glass pipe broken nominal flage size: DN20, needle valve fitted at bottom of the level meter for easy cleaning ... ends, in case broken of glass pipe.Nominal length: L=300, 500, 600, 800, 1,000, 1,200, 1, ... available in order for higher temp)needle valve auto-shut pressure: ≥0.3MPainsulation steam pressure: ≤0.6MPa, connection dimension: M12x1 external ... markers: (D,W)(A,B)(I,II),L=300-1,700, HG5