Factory Price Cryogenic Liquid Gas Dewar Cryogenic Dewar Flask Cryogenic Dewar Tank

• Application: Liquefied Gas
• Material: Stainless Steel
• Pressure: 0.1MPa≤p<1.6MPa
• Storage Medium: Moncombustible/Nontoxic
• Pressure Level: Low Pressure (0.1MPa≤p<1.6MPa)
• Condition: New
• Model NO.: DPL450-175-1.37
• Gas: Lox/Ln2/Ln2/Lar/LNG/Lco2
• Wp(MPa): 1.37/2.3/2.88/3.45/3.17
• Transport Package: Pallet/CTN
• Specification: 175L/195L/210L/410L/500L
• Trademark: N/M/OEM
• Origin: China
• HS Code: 73110090
• Production Capacity: 1000PCS/Month

Product Description

Description
Cryogenic Dewar Container-sometimes called a dewar flask or dewar-is a vessel with a vacuum space between a cold liquid and the outside walls of the vessel. One common type of dewar container is a thermos that you might use to keep drinks cold. Sir James Dewar developed liquid hydrogen more than 100 years ago, and in 1892 he designed a container to keep the liquified gas cold long enough to study. A dewar can be very simple, with double walls and an open mouth. Dewars built for specific uses can have features like lids, inlets, outlets, valves, and gauges. 
Cryogenic dewars store, dispense or transport cryogenic gases like liquid nitrogen, liquid oxygen, liquid helium, and liquid hydrogen. Here are a few of the many uses of dewar containers.

• A researcher might use a dewar to dispense liquid nitrogen or helium for an experiment. 
• There are dewars made specifically for studying superconductivity.
• Dewar containers store embryos for fertility treatments. 
• Truck-mounted dewars with specialized hoses deliver oxygen for in-home use.
• Portable dewars with casters and handles dispense cryogenic liquids across a factory or lab.

Uses and characteristics of Dewar flasks
It is used to transport and store cryogenic liquids such as liquid oxygen, liquid nitrogen, liquid argon, liquid carbon dioxide, LNG, etc. The gas cylinder can be used to supply liquid or gaseous gas.
The gas cylinder is easy to use, safe and reliable, economical and durable. The specific features are as follows:
1. The support system of the inner tank is made of stainless steel to achieve the purpose of low heat loss and high strength.
2. It is easy to use and can be operated independently by a single person.
3. Store pure cryogenic liquid. Large storage capacity. The gas storage capacity of a DP175 dewar cylinder is equivalent to more than 18 times the gas storage capacity of a standard high-pressure gas cylinder.
4. The internal pressure of the gas cylinder will rise during the deactivation phase after filling. The gas cylinder has a high-performance insulation system, and its pressure rise rate is low. Under normal circumstances, there is no need to reduce the pressure through a safety valve.
5. The built-in supercharger and vaporizer can realize continuous supply of gas or liquid, and there is no need to install an external vaporizer under the designed dosage.

Vertical Type of Cryogenic Liquid Cylinder/Dewar Flask/Dewar Container/Dewar Vessel

Model		DPL450-175-1.37	DPL450-175-2.3	DPL450-195-1.37	DPL450-195-2.3	DPL450-210-1.37	DPL450-210-2.3	DPL450-210-2.88
Geometric volume(L)		175	175	195	195	210	210	210
Effective Volume(L)		163	163	181	181	195	195	195
Size( diameter*height)(mm)		508*1498	508*1498	508*1624	508*1624	508*1718	508*1718	508*1718
Working pressure( Mpa)		1.37	2.3	1.37	2.3	1.37	2.3	2.88
Set pressure of main safety valve( Mpa)		1.59	2.41	1.59	2.41	1.59	2.41	3.1
Set pressure of bursting discset/Set pressure of assisant safety valve( Mpa)		2.5/2.41	3.84	2.5/2.41	3.84	2.5/2.41	3.84	4.9
Evaporation rate( Liquid nitrogen)		≤2.1%	≤2.1%	≤2.1%	≤2.1%	≤2.1%	≤2.1%	≤2.1%
Empty weight( kg)		115	138	121	145	128	153	173
Maximum filling weight(kg)	LO2(KG)	186	186	207	207	223	223	223
	LN2(KG)	131	131	146	146	157	157	157
	LAR(KG)	227	227	253	253	272	272	272
	LNG(KG)	69	~	77	~	82	~	~
	LCO2(KG)	~	188	~	209	~	225	225
Level gauge		float type	float type	float type	float type	float type	float type	float type
Surface treatment		Polishing	Polishing	Polishing	Polishing	Polishing	Polishing	Polishing
The base style		Rubber base	Rubber base	Rubber base	Rubber base	Rubber base	Rubber base	Rubber base

Horizontal Type of Cryogenic Liquid Cylinder

Model		DPW650-499-1.59	DPW650-499-2.5
Geometric volume(L)		499	499
Effective Volume(L)		449	449
Size( L*W*H)(mm)		2155*750*1035	2155*750*1035
Working pressure( Mpa)		1.59	2.5
Set pressure of main safety valve( Mpa)		1.72	2.75
Set pressure of bursting discset/Set pressure of assisant safety valve( Mpa)		2.41	3.84
Evaporation rate( Liquid nitrogen)		1.70%	1.70%
Empty weight( kg)		360	425
Maximum filling weight(kg)	LO2(KG)	511	511
	LN2(KG)	364	364
	LAR(KG)	629	629
	LNG(KG)	191	~
	LCO2(KG)	~	457
Level gauge		Capacitance	Capacitance
Surface treatment		Polishing	Polishing
The base style		Frame Style	Frame Style

Note: When filling natural gas, double safety valves are used to eliminate the rupture disc in the inner tank.
Caution: Adjusting the top bolt of the combined pressure regulating valve will not have the effect of accelerating the pressurization speed. Adjusting the top bolt of the combined pressure regulating valve at will will result in combined pressure regulation. The valve is damaged.
Combined pressure regulating valve: This valve has the dual functions of pressure regulation and air saving. When pressurizing, the cryogenic liquid in the bottle is transformed into saturated steam through the pressurizing coil, and then returns to the gas phase space at the top of the cylinder through this valve, thereby providing continuous and stable pressure in the cylinder. When using gas, the gas with too high pressure in the gas phase space on the top of the gas cylinder is discharged first through this valve to avoid gas loss caused by the opening of the safety valve due to excessive gas pressure. The solar term is automatic without manual operation.
Gas use valve: This valve is connected to a built-in vaporizer, through which vaporized gas can be obtained. It requires a CGA connector that matches the gas supplied by the container.
Liquid inlet and outlet valve: This valve is used to control the filling and discharging of cryogenic liquid. The user can connect to the CGA pipe joint in front of the valve through a special hose , Carry out the filling and discharge of gas cylinders.
Boosting valve: This valve controls the built-in booster circuit. Open this valve to pressurize the bottle.
Drain valve: This valve is connected to the gas phase space of the gas cylinder. Opening this valve can release the gas in the cylinder and reduce the pressure.
Pressure gauge: Displays the pressure of the cylinder liner in pounds per square inch (psi) or megapascals (MPa).
Level gauge: The cylinder level gauge is a floating rod spring type level gauge, which uses the buoyancy of cryogenic liquids to approximately indicate the cryogenic liquid in the cylinder Capacity. But accurate measurement must be weighed.
Safety device: The cylinder liner is designed with a first-level safety valve and a second-level rupture disc to protect the cylinder when overpressure. (In the case of overpressure) the safety valve is opened, and its function is to release the pressure rise caused by the normal heat leakage loss of the insulation layer and support, or the pressure rise caused by the accelerated heat leakage after the vacuum of the sandwich is broken and under fire conditions. When the safety valve fails, the bursting disc will open to release the pressure to ensure the safety of the gas cylinder.
Note: When filling natural gas, double safety valves are used to eliminate the rupture disc in the inner tank. The protection of the enclosure under overpressure conditions is achieved by a vacuum plug. If the inner tank leaks (resulting in excessively high interlayer pressure), the vacuum plug will open to release the pressure. In case the vacuum plug leaks, it will lead to the destruction of the interlayer vacuum. At this time, it can be found that the shell is "sweating" and frosting. Of course, frost or condensation at the end of the pipe connected to the bottle body is normal.
Warning: It is strictly forbidden to pull out the vacuum plug under any circumstances.
Note: Rupture discs can only be used once. The rupture disc must be replaced after it has acted. Can be purchased from our company.