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A self-pressurizing liquid nitrogen tank increases the pressure inside the tank through vaporization of liquid nitrogen. When it reaches a certain pressure value, liquid nitrogen can be continuously discharged.
Some users of self-pressurizing liquid nitrogen tanks find that the tank cannot discharge liquid nitrogen after using it for a period of time. After self-inspection, they find that the tank is intact. So what is the reason why the tank cannot discharge liquid nitrogen?
Reason 1: There is no liquid nitrogen in the tank
There is no liquid nitrogen in the tank, so of course it cannot be discharged.
The self-pressurizing liquid nitrogen tank itself relies on the vaporization of a small amount of liquid nitrogen to achieve pressurization. Without liquid nitrogen, pressure cannot be generated!
Moreover, self-pressurizing liquid nitrogen tanks and liquid nitrogen storage tanks are the same. Even if the tank is filled with liquid nitrogen and left unused, it will naturally evaporate.
Therefore, when you find that the self-pressurizing liquid nitrogen tank cannot drain, you must first check whether the liquid nitrogen in the tank has been used up, and replenish it in time.
If you only focus on the inability to drain the liquid and do not pay attention to the remaining amount of liquid nitrogen in the tank, this problem will occur a second time.
Reason two: ice blockage phenomenon
This situation usually occurs at the booster pipe, and sometimes at the drain pipe. This is because the moisture in the air enters the container and is not fully eliminated. When it comes into contact with low temperatures, it will freeze and block the container. Pipes naturally cannot drain fluid.

Simmental cattle are an excellent breed of cattle. Livestock farmers will buy Simmental cattle frozen semen and cross-breed them with local cattle to improve the quality of cattle and gain greater breeding benefits!
The purchased frozen beef semen cannot be stored in a normal temperature tank. What kind of tank should be used to store it?
â??â??Semen storage tank!
After Simmental cattle semen is extracted, it will quickly become inactive at room temperature and cannot be used. However, through the semen storage tank, the semen is specially treated and soaked in liquid nitrogen. The deep low temperature of liquid nitrogen -196�° can be used to preserve sperm for a long time. Activity, wait until use before taking out and thawing.
Specific steps for thawing frozen cattle semen for breeding:
1. Lift the bucket to the mouth of the jar and use long tweezers to quickly pinch out the frozen wheat tube;
2. Dissolve the frozen wheat tube in warm water at 30-40�°C, and take it out when it is half melted;
3. Check the sperm activity. If the activity is above 0.3, the breeding success rate is high and it can be used for insemination.
4. Load the semen into the gun and output it as soon as possible. Do not store it for a long time.
Notice:
Insemination time: The appropriate insemination time is after the cowâ??s estrus period, when the breeding success rate is higher.
Storage time of frozen semen at room temperature: After thawing, the longer the frozen semen is stored at room temperature, the lower the activity. Therefore, it should be thawed and infused immediately to avoid long-term storage or repeated freezing.

Liquid nitrogen supply tank is a cryogenic container made of stainless steel, mainly used for liquid nitrogen transfer and replenishment;
The container itself has a pressure boosting system, which supplies liquid nitrogen to other containers by controlling valves. It is usually used in conjunction with experimental instruments, electronic equipment and other devices.
It is characterized by being equipped with double safety automatic control valves to provide double safety protection measures; it can be continuously pressurized and has the uninterrupted nature of continuous liquid discharge; it is designed with 304 stainless steel inner and outer tanks + vacuum insulation structure, and has been rigorously tested at low temperatures; it is installed with Mobile casters with high load-bearing capacity make movement quick and convenient.
Correct use steps of liquid nitrogen supply tank:
1.Add liquid
Input liquid from the liquid inlet valve. When filling the tank, you must first open the vent valve, connect the metal hose for infusion to the liquid inlet valve, open the liquid inlet valve, and then add liquid nitrogen to the tank. The filling is completed. Finally, close the liquid inlet valve.
2. Liquid level indication
Liquid nitrogen supply tanks are generally equipped with a buoyancy level gauge. By observing the yellow indicator ring on the transparent display, you can grasp changes in the liquid level in the tank.
3.Storage
When storing liquid nitrogen, the liquid inlet valve and booster valve should be closed, and the vent valve should be opened;
4.Transportation
When the liquid nitrogen supply tank needs to be transported, the opening and closing states of each valve should remain the same as during storage, and the bottom casters should be fixed to prevent losses caused by road bumps.
5.Infusion
When you need to add fluid to other containers, pay attention to the following steps:
(1) Close the vent valve;
(2) Open the booster valve;
(3) Observe the pressure gauge;
(4) When the pressure rises to 0.05MPa, open the drain valve to replenish liquid nitrogen;
Liquid nitrogen supply tank is an important cryogenic equipment, which is widely used and frequently used. Correct use is more conducive to the smooth progress of experimental work.

The stainless steel liquid nitrogen tank is also a self-pressurizing liquid nitrogen tank. The tank itself has a pressurizing system and is adjusted through a pressurizing valve. When the booster valve opens, the pressure increases, and when it closes, the pressure decreases. During use, what is the reason why the booster valve is opened but unable to boost pressure?
The reasons why the pressure does not rise after the booster valve of the self-pressurized liquid nitrogen tank is opened are as follows:
1. The booster valve is damaged
When the vent valve and the inlet and outlet valve are closed, and the pipeline is unobstructed but does not pressurize, it means that there is a problem with the booster valve itself and the booster valve needs to be replaced. You can contact the manufacturer for replacement.
2. Pipe blockage
The main reason for pipeline blockage is that external air and moisture enter and are not discharged in time. Under the influence of low temperature in the tank, they condense into ice and block the pipeline.
The correct way to clear the pipe is to use hot nitrogen or hot air to blow away the ice and clear the pipe. After unblocking, it is recommended to transport liquid nitrogen to test whether it is unblocked. Do not use tapping to unblock.
3. Insufficient pressure
Check whether the pressure in the liquid nitrogen tank is sufficient. If the pressure in the liquid nitrogen tank is too low, the pressure cannot be increased even if the pressure increase valve is opened.
4. Container leakage
The container leaks and the vacuum is destroyed, which will also result in the inability to pressurize.
It is easy to judge whether the container is leaking. You can observe the frosting phenomenon on the tank body. The location of a large area of frost is the leakage location.
At this time, the jar can no longer be used normally. You can contact the manufacturer for after-sales treatment.
In short, there are many reasons why the pressure does not rise after the booster valve of the self-pressurizing liquid nitrogen tank is opened. Check them one by one to find out and solve the problems.

The liquid nitrogen tank for animal husbandry is a type of YDS series liquid nitrogen tank. It is an economical and practical liquid nitrogen tank dedicated to the breeding industry. It is designed for long-term static storage of frozen semen and convenient out-and-out sampling. It is more suitable for those who need to manually transfer and preserve biological samples. Used by users, especially those in mountainous areas.

This series of cattle essence storage tanks are made of high-quality aviation aluminum and contain multiple layers of high-strength thermal insulation layers. They have the advantages of being compact, lightweight, easy to carry, economical and applicable, efficient in storage, and have low liquid nitrogen volatilization rate, ensuring sample safety in all aspects.

In order to ensure that animal semen is not inactivated, the liquid nitrogen tank must be kept at a low temperature and a constant temperature. Liquid nitrogen tanks for animal husbandry have the following characteristics:
1. The container consists of an inner bladder, an outer bladder, a lifting tube, and a neck tube connecting the inner and outer bladders.
2. The inner and outer bladders are made of high-strength aluminum alloy, which is strong and durable.
3. There is a high vacuum between the inner tank and the outer tank, and the vacuum chamber is equipped with multiple layers of thermal insulation materials, so it has good thermal insulation performance.
4. The neck plug is made of plastic with good thermal insulation. It has the dual functions of reducing the evaporation of liquid nitrogen and fixing the lifting cylinder.
5. The neck tube is made of epoxy fiberglass, which has extremely low thermal conductivity and can control the external heat entering from the neck tube to a minimum.
6. The vacuum part is equipped with a gas adsorbent, which can absorb the gas emitted by metal or other substances in the vacuum chamber, thereby maintaining a high vacuum for a long time.

YDS series of liquid nitrogen tanks, in addition to animal husbandry cryopreservation of frozen semen, also has a place in the laboratory, usually used for batch preservation of cell samples, and with the use of freezing racks, so the capacity of liquid nitrogen tanks for laboratory use are more than 30 liters, the caliber â?¥ 125mm, do not need to replenish the liquid nitrogen frequently, and it is convenient to take the cells.

There are several kinds of liquid nitrogen tanks commonly used in the laboratory:
1.YDS-30-125, can put 6 freezing racks and about 600 2ml freezing tubes;
1.YDS-47-127, can put 6 square lifting buckets (freezing storage racks) and store about 750 cells;
2.YDS-65-216, 4~6 freezing racks, put about 2000~2400 2ml freezing tubes;
3.YDS-95-216, 6 freezing racks, store about 3000 cells;
4.YDS-115-216, with 6 freezing racks, put 2ml freezing tube about 4000;
5.YDS-145-216, with 6 freezing racks, the number of 2ml freezing tubes to be stored is about 4800;
6.YDS-175-216, 6 freezing shelves, about 2000 2ml frozen tubes.

The above models of liquid nitrogen tanks are more often used by laboratories, so they are also called "laboratory liquid nitrogen tanks".
This series of liquid nitrogen tanks for laboratory use are made of the same aviation aluminum material, vacuum structure of inner and outer gallbladder, nine temperature-locking process to ensure the heat preservation effect and prolong the liquid nitrogen evaporation time; double-handle design, convenient for indoor transfer, optional fifth wheel trolley and intelligent monitoring system, i.e., liquid nitrogen level monitor/alarm, to realize the remote alarm and temperature monitoring to liberate the laboratory personnel from some of their time.

For more information, please contact KGSQ Liquid Nitrogen Tank:

YDS series liquid nitrogen tanks are mainly used to store liquid nitrogen and biological samples.
Liquid nitrogen tank, also known as "liquid nitrogen biological container", is a low-temperature container that can store liquid nitrogen and biological samples. According to their uses, they can be divided into liquid nitrogen storage tanks, self-pressurized liquid nitrogen tanks, and gas-phase liquid nitrogen tanks. Among them, liquid nitrogen storage tanks can also be subdivided into storage types and transportation types. The storage type is mainly used for static storage and is not suitable for long-distance transportation during work; the transportation type is specially designed to meet transportation conditions and has an internal shock-proof function. Support, while also allowing for static storage when needed.

Since liquid nitrogen tanks are used to store samples, they need to be used correctly:
before use:
1. Check the jar
Check whether the shell has any dents or dents, and whether the vacuum port is intact;
Check whether there are foreign objects or impurities in the tank. If there are foreign objects, they need to be removed to prevent the inner tank from being corroded;
2. Pre-cooling
Inject a small amount of liquid nitrogen into the tank to cool the inner liner;
After injecting liquid nitrogen, cover the neck plug and leave it for a few hours, such as the boiling phenomenon disappears and the liquid nitrogen tends to stabilize;
When the water droplets or frost produced by the heat exchange of the tank body fade away and there is no white frost on the neck plug, it means that the pre-cooling is completed.
when using it:
1.Storage
Store in a well-ventilated and cool place, do not expose to direct sunlight;
Keep upright and do not tilt, lay horizontally, invert, pile up, hit each other or collide with other objects;
2.Transportation
Handle it gently when moving and avoid sudden movements;
It must be fixed during transportation to ensure that it will not shake during transportation;

After use:
Cleaning:
1. After the liquid nitrogen has evaporated, let it sit for several hours until the internal temperature of the container returns to normal temperature.
2. Pour warm water at 40 -50 into the container, and then wipe it with a cloth.
3. Rinse 2-3 times with clean water.
4. Invert the container to dry naturally. You can also use hot air to dry it. The suitable temperature is 40 -50 . Avoid hot air above 60 .
After cleaning, store it in a dry and ventilated place, and check it regularly for next use.

In addition to being used for storage and transportation, liquid nitrogen tanks can also be used for self-pressurizing liquid nitrogen tanks that combine storage and transportation, and are only used for rehydration of other liquid nitrogen containers. The self-pressurizing liquid nitrogen tank belongs to the "YDZ" series. It has the same vacuum insulation + internal and external double tank structure as the "YDS" series, but the YDZ has no caliber and controls the inlet and outlet of liquid nitrogen through valves.

Features of self-pressurizing liquid nitrogen tank:
1. It is manufactured in accordance with the national standard GB/T 14774-2012, and users have evidence to follow;
2. Both the inner and outer bladders are made of 304 stainless steel, which has strong load-bearing resistance, good low-temper ature resistance and good heat insulation, and is easy to clean;
3. The three valves, boosting valve, venting valve, and liquid inlet and outlet valves, are all low-temperature control valves, which are durable and stable;
4. Equipped with double safety valves and double protection to prevent users from misoperation causing excessive pressure and causing danger;
5. Equipped with a pressure stabilizing system device to stabilize the pressure and liquid nitrogen flow rate to prevent sudden increases and drops in pressure from causing liquid nitrogen to splash and injure people;
6. The movable casters at the bottom are not only flexible, but also have high load-bearing capacity, so you can use them with confidence;
7. Special vacuum technology ensures a low liquid nitrogen evaporation rate;
8. After strict low-temperature testing before leaving the factory, it can enjoy a 5-year vacuum warranty and a 1-year free warranty service;

Advantages of self-pressurizing liquid nitrogen tanks:
1. Low pressure is safer
In addition to self-pressurizing liquid nitrogen tanks, there are also medium and high-pressure Dewar bottles that can realize liquid nitrogen replenishment. The difference lies in the pressure and whether annual inspection is required. The self-pressurizing liquid nitrogen tank has a low pressure within 0.1MPa and has no pressure when not in the infusion state. It is not a pressure vessel and does not require annual inspection, which is safer.
2. High efficiency in outputting liquid nitrogen
Although the pressure is low, the infusion speed of the self-pressurized liquid nitrogen tank is not slow. When it is fully filled, it only takes 20 seconds to pressurize it to the standard pressure; the liquid nitrogen storage capacity is 3/4, which takes about 1 minute. And it relies on the internal pressurization system to pressurize, without contact with external air, and the purity of liquid nitrogen is guaranteed.
In addition, self-pressurizing liquid nitrogen tanks can be equipped with solenoid valves to achieve automatic replenishment.

Tianchi KGSQ liquid nitrogen tank is a device used to store liquid nitrogen. It is made of aluminum alloy and adopts an inner and outer double-layer structure. It has a vacuum layer and thermal insulation design, low liquid nitrogen volatilization rate, light weight, and takes up little space. , larger capacity sample cryopreservation and other advantages. The main function is to store and provide liquid nitrogen for laboratory research, cryopreservation of biological samples, preparation of superconducting materials and other applications.

Dewar flask 30L product specifications
Brand: Tianchi
Material: aluminum alloy
Warranty period: 5 years
After-sales service: 2 years

Model: YDS-30
Volume(L):31
Caliber(MM):50
Outer diameter(MM):440
Height(MM):730
Static storage(D):260
Static liquid nitrogen evaporation capacity (kg/D): 0.09


Model: YDS-30-80
Volume(L):31.5
Caliber(MM):80
Outer diameter(MM):440
Height(MM):730
Static storage(D):150
Static liquid nitrogen evaporation capacity (kg/D): 0.15


Model: YDS-30-125
Volume(L):31.5
Caliber(MM):125
Outer diameter(MM):440
Height(MM):730
Static storage(D):100
Static liquid nitrogen evaporation capacity (kg/D): 0.25


Model: YDS-30-210
Volume(L):31.5
Caliber(MM):210
Outer diameter(MM):440
Height(MM):730
Static storage(D):49
Static liquid nitrogen evaporation capacity (kg/D): 0.50

Tianchi KGSQ has more than ten years of production experience. The company has professional production technology and high-tech equipment. We provide high-quality liquid nitrogen biological containers, self-pressurized liquid nitrogen containers, and stem cell liquid nitrogen tanks.
We don't recycle any of our products, so you can have confidence in our products.
return policy
Buy with confidence. If you want to return an item for any reason, you have 30 days. â??
If necessary, please feel free to contact us:

YDS-10 liquid nitrogen tank
Product introduction: YDS-10 is the most commonly used storage liquid nitrogen tank. It is widely used in animal semen storage in animal husbandry and can also be used for cryogenic preservation of samples and mechanical parts. Made of all-aluminum structure technology, high vacuum multi-layer super insulation structure. It has the advantages of being compact, lightweight, easy to carry, low daily evaporation rate of static liquid nitrogen, economical and practical.

Product parameters:
Model: YDS-10
Geometric volume (L):10.8
Caliber(mm):50
Static liquid nitrogen evaporation capacity (L/D): 0.08
Static liquid nitrogen storage period (d): 105
Outer diameter of lifting tube (mm): 38
Lifting tube height (mm): 120
Number of lifting tubes (ea): 1-6 pcs
Quantity of 0.5ml cryovials: 792
Quantity of 0.25ml cryovials: 1788
Height (mm):580
Outer diameter (mm): 334
Empty weight (kg):5.8

Optional accessories:
3 buckets, lock lid, neck stopper, protective cover

Product Features:
1. Made of lightweight and strong aluminum material;
2. Can store large-capacity frozen fine tubes;
3. High vacuum multi-layer insulation design to reduce liquid nitrogen evaporation loss;
4. Equipped with a protective cover to prevent the jar from being bumped during use;
5. Optional safety lock cover structure, safe and beautiful;
6. Different calibers to choose from, easy to pick and place;
7. EU CE certification;
8. Five-year vacuum warranty;

Tianchi KGSQ is a professional manufacturer of cryogenic vessels with more than ten years of experience. Our products are widely used in animal husbandry, scientific research institutions and university sales. We don't recycle any of our products, so you can have confidence in our products. If you want to become our dealer, please contact us.

Basic specification of stainless steel water tank:

Material: Stainless steel SUS304 or SUS316
Water Tank Volume: 1-1000CBM
Stainless Steel Panel Size: 1.0m*1.0m, 1.0m*0.5m,0.5*0.5m
Stainless Steel Panel Thickness: Wall board thickness: 4mm,6mm,7.5mm,8mm,10mm and etc.
Accessory:Water inlet and outlet,Bolts,Steeling tapes,Draw rod,Flange connection,Ladder,Base channel(C channel)etc.
Water Tank size: can be produced according to customer's size

Product Name:Purified water storage tank Deionized and Ultra-pure Water Storage Tanks
What are some common materials used to make purified water tanks?
Purified water tanks can be made from a variety of materials, depending on the intended use and application. Some common materials used to make purified water tanks include:
Stainless steel: Stainless steel is a durable and corrosion-resistant material that is commonly used in the food and beverage industry. It is easy to clean and maintain and can withstand high temperatures and pressures.

TOPTION FRP plant produces various horizontal and vertical FRP storage tanks, FRP containers, and FRP large-scale series of FRP pressure vessels. Different types of high-quality resins are selected according to the medium stored by the user, which consists of a high-resin content corrosion-resistant liner, a leakproof layer, a fiber-wound strengthening layer, and an outer protective layer. The product's working temperature is between -50 and 80, and the pressure resistance is generally below 6.4MPa. It has the advantages of pressure resistance, corrosion resistance, aging resistance, and long service life. Additionally, FRP has the characteristics of lightweight, high strength, leak prevention, insulation, non-toxicity, and smooth surface. Fiberglass products can be widely used in the petroleum, chemical, textile, printing and dyeing, power, transportation, food and beverage brewing, biological and pharmaceutical industries, as well as in water supply and drainage, seawater desalination, water conservancy and irrigation, and national defense engineering.

Product Description
Faber cylinders give you the quality and performance you expect and appreciate in a steel scuba cylinder. With one of the widest ranges of sizes in the market today Faber cylinders offer you the needed volume and flexibility to maximize your bottom time. With over 35 years of cylinder manufacturing experience, let Faber make your diving experience a safe and enjoyable one. From the highest quality, deep drawn Chromium Molybdenum steel, to our exclusive Phosphatized-cleaned internal surface, triple protected zinc, and epoxy and polyurethane finish for durability, you get the best from Faber.

High Pressure tanks that are compatible with any regulator
Free Visual Inspection Program (VIP) Included
Includes Pro Valve-Standard Yoke and DIN Compatible
3442 PSI
Nitrox Compatible to 40% (The Recreational Limits of Nitrox)
Durable corrosion resistant finish
Chromium Molybdenum Steel
DIAMETER: 5.5 inches
LENGTH: 17.7 inches
WEIGHT EMPTY: 14.8 lbs.
BUOYANCY FULL: -1.48 lbs.
BUOYANCY EMPTY: -4.51 lbs.
FULL MANUFACTURER'S WARRANTY

Product Description
Blue Steel Faber HP Steel Tank Painted Silver with Pro Valve

Includes: Blue Steel PRO Valve, Tank, Current Hydro, VIP and Tank boot

Faber Steel Cylinders Feature:

3442 psi (237 bar) working pressure
Phosphatized-cleaned interior
DOT SP13488 and TC SU7694-237
O2 cleaned for use with up to 40% pre-blended nitrox
Includes rubber self-draining tank boot with round rim
Inlet thread is standard �¾â??-14 NPSM
Painted Silver
Triple protected the finish for long-lasting durability. The process includes a zinc galvanization spray followed by epoxy paint and then a polyurethane topcoat.

Product Description
Blue Steel Faber HP Steel Tank Hot Dip Galvanized with Pro Valve

Includes: Blue Steel PRO Valve, Tank, Current Hydro, VIP and Tank boot

Faber Steel Cylinders Feature:

3442 psi (237 bar) working pressure
Phosphatized-cleaned interior
DOT SP13488 and TC SU7694-237
O2 cleaned for use with up to 40% pre-blended nitrox
Includes rubber self-draining tank boot with round rim
Inlet thread is standard �¾â??-14 NPSM
Hot Dip Galvanized
The most durable, corrosion-free exterior finish possible. The process involves submerging
the cylinder into molten zinc. The zinc metallurgically bonds to the steel.

Dosing Tank
Capacity: 100 LIT.
MOC:LLDPE.

Jotun polishing machine/ China stainless steel tank/cylinder shell surface automatic polishing machine

This is JT-1 tank shell surface polishing machine,which can polish tank shell inside and outside surface.
Producting workpiece
Material:Metal(stainless steel,carbon sheel,etc.)
Min and max diameter:200-5000mm,
Min and max thickness:>1mm
Min and max length:300-6000mm.
Weight:1/2/3/5/10Tons.
Surface roughness:Ra 0.25m

Shipment port:Shanghai port.
Delivery time:30 working days
Payment: T/T, L/C
Warranty: 12months.

FRP tank product according customer's requirement

Pressure tanks are used in closed water circulation systems to balance water flow and pressure, avoiding frequent opening of safety valves and frequent replenishment of automatic water valves. The expansion tank not only serves to accommodate the expansion water, but also serves as a makeup water tank. The expansion tank is filled with air and can obtain a larger volume to accommodate the expansion water. High and low pressure expansion tanks can use their own pressure to supplement water to the pressure stabilization system in parallel. The control of each point of this device is interlocking reaction, automatic operation, small pressure fluctuation range, safe and reliable, energy-saving, and good economic effect.