The Dura Cylinder Dewar flask liquid nitrogen tank from Chater is mainly designed for efficient liquid nitrogen supply and efficient gas use. The liquid storage and preservation time of the Dewar flask is longer, the static volatilization rate is lower, and the effective utilization rate is higher. Many liquid nitrogen supply occasions commonly use Chart's 230LP model liquid nitrogen supply tank. The exceptional insulation structure of the Chater liquid nitrogen tank results in minimal or no product loss over a period of time. For example, in terms of efficient gas usage, the capacity of one 180MP Dewar flask is equivalent to 18 high-pressure gas cylinders with a pressure of 2400PSI

Product advantages:

The liquid nitrogen tank Dewar flask is mainly composed of the tank body, monitoring device, safety device, pressure balance circuit, valve and other accessories. Its main control valve group and joint are installed at the top of the tank body for easy operation and can be connected to various standard sized hoses.

The inner and outer tanks of the main structure of the liquid nitrogen tank are mainly made of austenitic stainless steel. The internal high vacuum insulation material is used for insulation, and after vacuum treatment, the vacuum layer is insulated from the thermal insulation. The thickness of the vacuum layer is 25mm, which is durable.

3 combination pressure control regulation, ultra-low vaporization loss. The LCCM combination pressure regulating valve has been calibrated; Specially designed for Chart; Integrating turbocharging and economic return; Readable, mechanically adjustable structure. The Chart pressure regulating valve can directly read the pressure of the boosting circuit under the regulating cap.

Four Chater Dewar liquid nitrogen tanks are equipped with two convenient carts for easy movement and handling of the tanks.
5 Chart's unique reusable vacuum suction port for easy maintenance.
6 standard patented Charter level gauges, convenient for understanding the liquid nitrogen level inside the tank, facilitating the filling and use of liquid nitrogen. And it can rotate 360 degrees.

Technical parameters:

PRODUCT MODEL/Model	DC230LP	DC230MP	DC230HP
Capacity/Capacity
Geometric volume/Gross (liters/L)	240	240	240
Net volume/Net (liters/L)	230	230	230
Dimensions/Size
Outer Shell Diameter (cm/cm)	60.6	60.6	60.6
Base size/Square Base size (cm/cm)	63	63	63
Height/Height (cm/cm)	160	160	160
Technical Parameters
Safety valve set pressure (megapascal/PSI) Relief Valve Setting(MPa/PSI)	0.15/22	1.58/230	2.41/350
Explosive disc set pressure (megapascal/PSI) Secondary Relief Valve Setting(MPa/PSI)	1.38/200	2.76/400	4.13/600
Pressure regulating valve set pressure (MPa/PSI) Regulator setting pressure(MPa/PSI)	0.12/18	0.86/125	2.07/300
Empty Weight/Empty Weight (kg/kg)	145	168	185
Filling Weight/Full Filling Weight (kg/kg)*
Liquid oxygen/CO2	258	229	223
Liquid nitrogen/LN2	182	163	156
Liquid argon/LAr	318	275	270
Liquid carbon dioxide/LCO2	/	/	239
Standard Gas Volume (Nm3) under standard conditions
Oxygen/O2	/	164	156
Nitrogen/N2	/	132	124
Argon/Ar	/	160	151
Carbon dioxide/CO2	/	/	121
Daily evaporation rate (liquid nitrogen)/NER (LN2)	1.5%	1.8%	1.8%
Airflow/Gas Flow Rate (Nm3/hr)
Oxygen, nitrogen, argon (O2, N2, Ar)	/	10.5	10.5
Carbon dioxide (CO2)	/	2.9	2.9

* The filling weight/fill weight under the set pressure of the safety valve is based on the relief valve setting pressure


Three function configuration
1. Gas phase valve - can directly output gas for use
2. Liquid phase valve - filling or outputting liquid
3. Pressure regulator/booster - control (on/off) pressure control regulator
4. Exhaust valve - release the pressure inside the tank
5. Safety valve - overpressure relief
6. Pressure gauge, safety valve, bursting disc
7. Boosting valve - open the tank for boosting pressure
9. Liquid level gauge&protective cover - liquid volume in welded insulated gas cylinder