Product Main

Specifications

Overview:
Pressure building liquid nitrogen container (Dewar) generates pressure by evaporation of a small amount of liquid nitrogen, so that the container can discharge liquid nitrogen automatically, and supply liquid nitrogen for other containers. It finds its application in the transportation and storage of liquid medium and cold source of other refrigeration equipments. It is now widely used in tool and die industry, animal husbandry, medicine, semi-conductor, food, cryogenic chemical industry, aerospace, military and other industries and areas.
Production Standard: GB16774-1997(Pressure Building Liquid Nitrogen Container)
Production Technology: Inner and outer shells of the main body are made of 304 austenite cryogenic stainless steel of fine quality; absorbents are regenerated and activated; multi-layer insulation materials are oil-and-lipid-free thin imported composite. All welds are qualified by helium mass spectrometer leak detection; 100% of products have gone through strict cryogenic testing; unique neck design ensures a very low rate of evaporation losses; machine or digital display liquid level gauge is optional; The surface of the container using a unique polishing technology, and has aesthetic modeling.
Security Technology:
A two-way multi-level security system is installed to ensure the safe and reliable use of the product; the layout of valve interface is reasonable for secure and convenient operation.

Specifications Unit YDZ-5 YDZ-15 YDZ-30 YDZ-50 YDZ-100 YDZ-150 YDZ-175 YDZ-200 YDZ-300 YDZ-500
Geometric volume  L 5.5 16.5 32 55 110 165 185 220 330 550
Effective volume  L 5 15 30 50 100 150 175 200 300 500
Outside diameter mm 325 400 450 500 600 650 700 750 850 1000
Height  mm 550 725 885 970 1175 1200 1250 1300 1400 1500
Weight empty Kg 15 23 32 54 75 102 120 130 202 255
Neck tube diameter mm 40 40 40 40 40 40 40 40 40 40
Daily evaporation rate  % 3 2.5 2.5 2 1.3 1.3 1.2 1.2 1.1 1.1
Standard working pressure Mpa 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05
Maximum working pressure Mpa 0.099 0.099 0.099 0.099 0.099 0.099 0.099 0.099 0.099 0.099
Liquid velocity L/min ≥2 ≥2 ≥3 ≥4 ≥4 ≥4 ≥4 ≥4 ≥4 ≥4
Setting Pressure of the first safety valve Mpa 0.099 0.099 0.099 0.099 0.099 0.099 0.099 0.099 0.099 0.099
Setting Pressure of the second safety valve Mpa 0.115 0.115 0.115 0.115 0.115 0.115 0.115 0.115 0.115 0.115
Pressure gauge indication range Mpa 0 ～ 0.25 0 ～ 0.25 0 ～ 0.25 0 ～ 0.25 0 ～ 0.25 0 ～ 0.25 0 ～ 0.25 0 ～ 0.25 0 ～ 0.25 0 ～ 0.25