HG-5 glass pipeline liquid level meter

nominal flage size: DN20, needle valve fitted at bottom of the level meter for easy cleaning and sample taking purpose. Leaking proof steel ball fitted at both ends, in case broken of glass pipe. Nominal length: L=300, 500, 600, 800, 1,000, 1,200, 1,400, 1,700 (mm) Other length available in order. Visualable length: L1=150, 350, 450, 650, 850, 1,050, 1,250, 1,550 (mm) working pressure: ≤1.6MPa medium temprature: ≤200°C (Quartz Sleeve available in order for higher temp) needle valve auto-shut pressure: ≥0.3MPa insulation steam pressure: ≤0.6MPa, connection dimension: M12x1 external thread connection methord: flange PN1.6 DN20 A--Female flange: HG20592-20635-97 B--Male flange: HG20592-20635-97 manufacture standard: HG5-227-80 codeDWIIIABLPNDNstand forstandardinsulationcarbon steelstainless steelfemale flangemale flangenominal lengthnonminal pressurenominal bore selection markers: (D,W)(A,B)(I,II),L=300-1,700, HG5