... flage size: DN20, needle valve fitted at bottom of the level meter for easy cleaning and sample taking purpose. Leaking proof ... .Nominal length: L=300, 500, 600, 800, 1,000, 1,200, 1,400, 1,700 (mm)Other length available in order ... , 1,250, 1,550 (mm)working pressure: ≤1.6MPamedium temprature: ≤200°C (Quartz Sleeve available in order for higher temp)needle ...