Homemade scuba diving at home. We make a simple scuba diving with our own hands. Construction and materials of which the cylinder is composed

Must ensure the safety and comfort of the diver. Do-it-yourself scuba diving is quite realistic. However, for this it is necessary to know the principle of operation of the equipment, its structure and working resource. Let's consider this topic in more detail.

Device

If you decide to make your own scuba gear, you should know what it consists of. For the device to work correctly, it must have several basic elements:

1. One or a pair of compressed breathing cylinders with a capacity of 7-18 liters.
2. Regulator consisting of a lung demand valve and one or more gearboxes.
3. The buoyancy compressor, which is a special inflatable vest that makes it possible to adjust the diving depth.
4. Pressure gauge. It has a signal that is triggered at an air pressure of 30 atmospheres.

Scuba from a fire extinguisher with your own hands

For the manufacture of such a device, a tank of an acid fire extinguisher is required, designed for a pressure of 150 bar, with a capacity of 5 liters. The following manipulations are carried out in several stages:

• The valve is turned before giving it round shape, is screwed into a special T-shaped fitting equipped with a charging valve.
• A pair of duralumin plates tightened together are attached to it.
• A revised second stage of a similar element of the oxygen chair (functions from 8 bar) is used as a reducer.
• A home-made safety valve is being prepared, the diameter of the membrane should be reduced using two plates.
• A gear valve bed (with a section of 1.2 mm) and a fluoroplastic pillow for the same element are made.
• The lung governed demand valve is tightened with bolts.

The balloon is fixed with duralumin clamps on the fiberglass backrest. We can assume that a mini scuba diving made with your own hands is ready.

The unit in question is reliable in operation. Among the main disadvantages is the corrosion of the gearbox housing made of duralumin in salt water. Silicone grease will help solve this problem. The average weight of the assembled equipment will be about 9.5 kg.

Second option

In this case, the device is made from a two-liter tank-receiver from a fire extinguisher. The device is fastened in the chest area; instead of a regulator, a homemade pneumatic button is used to mechanically supply air for inhalation. The reservoir has a check valve that closes the air compartment if the hose breaks.

Since there is no gearbox, the scuba gear is used at a limited depth. The diaphragm is pressed against the valve seat by a spring. When you press the lever, it rises and the air mixture is supplied for inhalation. The exhalation goes into the water through a special valve. From the surface, air is supplied by means of a welding cylinder (volume up to 40 liters), to which a lung demand valve is connected. The pneumatic button can be attached to your hand for a more comfortable dive.

Another model from a fire extinguisher

This scuba diving can be made from a 1.5 liter fire extinguisher cylinder. The unit is equipped with a manual air supply system for inhalation, there is a pneumatic button, a reducer and a valve. A fire extinguisher cylinder (1.5 l) is used.

The reducer includes a tube placed in the union from the fire extinguisher. It houses a plastic check valve, which is pressed against its seat by compressed air and a spring. A housing with a membrane and a pin is screwed onto the tube. The reverse side is equipped with a lever that is activated after pressing with a finger. Air, passing through a nozzle with a diameter of 2 millimeters, is inhaled, and exhaled through the valve. The weight belt can be made from lead or duralumin tubes. It is equipped with a self-made quick-lock buckle.

Scuba diving with your own hands from a bottle

To make this device, you will need a pump sprayer, a flexible plastic hose, a diving tube, and a bottle.

The production of the apparatus is carried out as follows:

1. The first step is to remove the restrictor in the sprayer. This will increase the yield of the air mixture.
2. A hose is put on the top of the sprayer, the connection is sealed with silicone or hot glue.
3. A cover from the bottom of the underwater tube is mounted plastic bottle, in which it is necessary to pre-make a hole in the diameter of the hose.
4. The hose is inserted into the prepared socket and is carefully sealed.

The bottle interacts with a pump sprayer and is filled with an air mixture. For example, a 330 ml reservoir will fill in about 50 swings. This is enough for 4 full breaths. Larger containers require reinforcement with a load, since they tend to float when filled with air. To remove the mixture from the bottle, just press the spray button.

Attachment for scuba diving from gas cylinders

Do-it-yourself scuba diving can really be made from gas cylinders... Below are the stages of work:

1. Cylinders up to 22 liters are used as the main container. Alternatively, you can take two tanks of 5-7 liters.
2. Next, you need to prepare a reducer comparable to the pressure of the container.
3. The reducer is connected to the cylinder, the pressure in it should be 6-10 bar higher than the ambient indicator.
4. A hose with a lung demand valve is connected to the reducer.
5. Then connect the regulators. Their number depends on the intended tasks. For example, a planned dive will require a main and spare element.
6. You can also install a buoyancy compensator, which will increase the safety of the scuba gear.

At the last stage, fill the cylinder with an air mixture, check the operation of the entire device. The first dive should preferably be done at a shallow depth to make sure the unit is in good working order.

In conclusion

The above considered how to make scuba diving with your own hands from scrap materials. In principle, there are no particular difficulties in this. Depending on the tasks, you can make an almost professional model designed for great depth, or a simple scuba diving from a bottle for shallow dives. When deciding to make a device yourself, remember that safety comes first. Therefore, after assembling the structure, be sure to check it for leaks and the correct operation of all units.

Lovers of diving, snorkeling and hunting will definitely love the idea of \u200b\u200bmaking their own scuba gear, which is what this video review is about.

So, we need:
- pump sprayer;
- flexible plastic hose;
- underwater snorkel for diving;
- capacity.

According to the author, such sprayers are used in horticulture, so it will be easier to find them in specialized shops for gardeners. We also note that when choosing a container, you should not stop at large bottles, since they will stretch upwards a lot.
First you need to remove the restrictor that is installed in the sprayer. On the model that the author uses, the limiter is on the edge, so it is enough to cut it off with a hacksaw. This is to allow more air to escape from the sprayer.

We attach a plastic bottle cap to the bottom of the underwater tube, on which we pre-drill a hole along the diameter of the hose.

We insert a hose into the hole and also carefully glue it with glue, taking care of the tightness of the structure.

Simple scuba gear is ready.

It works according to the following principle. We connect the bottle with a pump sprayer and fill it with air. The 330 ml bottle is filled with air in about 50 strokes. That much air is enough for 4 full breaths. When using capacity bigger size care should be taken of the load as a bottle filled with air will impede being underwater. In order to extract air from the bottle, just press the corresponding button on the spray.

Diving is a very exciting activity, but it is associated with many risks to life and therefore is replete with many safety rules. Also, before each dive, the diving cylinders should be checked and refilled.

This is a very responsible procedure, and the first thing to remember is that refueling with industrial gases is strictly prohibited. filled with a clean air mixture of oxygen and nitrogen, less often with mixtures of air and inert gases. The concentration of components and the absence of impurities is vital at depth, since even the smallest foreign particle can be fatal.

Refueling usually takes place in specially designated places, where a number of important details are necessarily taken into account:

1. Extreme care is taken when pumping breathing gas.
2. Work is carried out only with special labeled cylinders containing oxygen.
3. There is a mandatory marking of the filled cylinders, which indicates the composition of the mixture.
4. The oxygen concentration is carefully monitored - if it exceeds the norm, it can lead to corrosion.
5. Complete elimination of carbon monoxide or carbon dioxide impurities, which are deadly when diving.

Also, do not forget that large compression of a gas such as oxygen can lead to an explosion. The reasons are known, and all precautions are taken based on them in the filling centers. The question may arise - how many are there? The following list will give the answer:

1. The main reason is carelessness when pumping oxygen.
2. Poor quality of the inner walls of the cylinder, especially if they are corroded.
3. Damaged thread or neck where the valve is connected.
4. A sharp temperature drop, forcing the gas to change volume.

Construction and materials of which the cylinder is composed

Cylinder volume

In order to understand which cylinder is suitable for a particular diver, you need to take into account his physiological data. First of all, it is worth remembering that the larger the cylinder, the heavier it is, but it also holds more breathing gas. know how much air they consume, and accurately calculate the volume of the purchased tank - after all, the average dive lasts from 45 to 60 minutes and the ideal is the balance of 50 bar of air before surfacing.

An average person of average body weight is quite satisfied with a 12-liter cylinder, in which breathing gas is pumped to a standard value of 200 bar. But these are very average values, since there are divers who have very economical breathing, which allows you to take 10-liter oxygen tanks with them, and there are heavyweights who need all 15 liters of reserve. Occasionally there are divers who use cylinders with a volume of 18 liters or more, but these are exceptionally strong and healthy swimmers, since such tanks have a solid weight. So, in order to determine how much you need, only a specialist will answer.

Cylinder design

It will be far from superfluous to know what elements make up the equipment that ensures your life under water:

• The most important and conspicuous component of the balloon is the bulb. It is a gas storage facility. At the moment, there are 3 types of cylinders according to the materials used in their production. Each of them has its own advantages and disadvantages:

1. The first type is steel cylinders. They are heavy, rather strong and have negative buoyancy, which plays into the hands when picking up loads. But the solid weight imposes a limit on how much they can be taken with you to depth.
2. Aluminum cylinders, oddly enough, are heavier than steel ones. This is due to the thicker walls of the flask, despite the low density. Despite this, they have one important property - their weight in water is approximately zero. Therefore, they are used by many divers of various diving federations, even though the maximum pressure in them does not exceed 210 bar.
3. The third type is steel and carbon fiber composite cylinders. They are not heavy, have a high level of buoyancy and are quite fragile. Their prices are very high, so they are rarely used.

• Shut-off valve. It is designed to connect the flask and regulator. Its task is to control the gas flow both to and from the cylinder. It also creates a sealed connection and has a special fuse in its composition - a disc that will collapse at the moment when the pressure exceeds the permissible rate.

Valves with 1 input and 1 valve are usually found. But there is a more complex design - a Y-shaped valve with 2 outlets and 2 valves. In case of failure of one outlet, you can close it and use the second one.

• Sealant. It is a rubber ring to prevent the ignition of oxygen-rich mixtures.
• Pressure gauge or backup arm (older models). Until the 70s of the last century, reserve levers were used in order to warn the scuba diver of the exhaustion of the breathing mixture. At the moment of depletion, the gas supply was stopped and to resume it, it was necessary to pull this very lever and float up. This system occurs periodically even now.
• A shoe designed to protect the cylinder from unnecessary hits on the ground and to install it in an upright position. It looks like a plastic glass and is mainly used with steel cylinders.

Refueling the cylinder at home

Until the 1990s, cylinders were filled with a conventional air mixture of 79 percent nitrogen and 21 percent oxygen. Alas, it was very dangerous, since its use was fraught with nitrogen anesthesia, which could lead to death. Then they tried to use both mixtures enriched with oxygen and depleted in it. But the practice did not take root due to the fact that it did not lower, but increased the danger to life.

Today, they continue to refuel with ordinary air and breathing mixtures with the addition of helium, which work many times better, but also have a much higher cost.

As already mentioned, it is better to fill the cylinders in special places, using the services of professionals. But if you are experienced enough, know your equipment well and can afford to buy everything you need, then you can do this at home. To do this, you will need: scuba gear, gas analyzer, gasoline or electric compressor.

Step-by-step instructions for refueling:

• Not having the skills to handle compressor equipment, it is better not to take on self-refueling. Otherwise - prepare a solid amount for the compressor. Of course, teaming up with like-minded people with whom you do regular dives is ideal, so that the cost of refueling equipment will be economically justified.

The choice of gasoline or depends on the location where you dive. If there is such a luxury as an electrical connection, take an electric one. But more universal option will still be petrol. And experts in any specialized store will always help you in choosing.

• Before starting, check all valves and diaphragms, no matter how many. They should not have diaper rash, damage - everything should be in perfect condition. Also inspect valve springs, fasteners, clamps, air hoses... If you find the slightest defect, change it to a new one without delay.
• Before refueling, connect the scuba tank to the compressor and set it to the pressure for which the cylinder is designed. Next, turn on the compressor and open the valve. Standard cylinders for 12-14 liters take about ten minutes to fill. Then turn off the air and turn off the compressor.
• The most important part is checking the air composition with a gas analyzer. At the slightest deviation from the norm, drain all the contents and repeat the procedure. Your life depends on it.

Further, the cylinder is stored as long as required. Do not worry, they need to be stored in a filled state, as this significantly reduces the risk of various impurities getting inside and in order to avoid the onset of oxidative reactions on the inner walls.

Conclusion

If you decide not to resort to the help of specialists and refuel your diving cylinders yourself - be careful. This activity does not tolerate negligence and inattention. But, observing all safety rules, you will save yourself from tedious trips to the nearest specialized store or fire department and can do everything yourself.

Homemade scuba gear is an inexpensive device for breathing underwater. The authors of numerous reviews assure that this device can replace expensive diving equipment in case of diving to a depth of four meters. So, homemade scuba - what is it and how to make it?

Human dependence on technology

Wondering how to do homemade scuba divingmust remember that any human activity that is not associated with the use of any devices, equipment or other equipment, makes you rely only on your own luck or the help of a friend. These include, for example, ordinary swimming. Human use of technology - a car or scuba gear - multiplies its capabilities. But in proportion to the complexity of technology, man's dependence on it also increases.

A diver equipped with a set of "mask, fins, snorkel" finds himself in an unpleasant situation when he loses any of his equipment under water. But a scuba diver finds himself in a much more difficult position if the air supply suddenly stops under water. This can happen at a depth with which it is impossible to ascend in one breath. Bulky scuba gear reduces mobility and increases water resistance. A similar emergency can happen under ice or in a cave. Divers should be very careful with the technique they use. This is especially true for those who decided to make homemade scuba gear.

On the complexity of the question

The modern scuba diver's equipment is focused on his comfort and safety. All units and elements of equipment must be thought out to the smallest detail. Specialists have developed rules for the use of equipment, which are strongly discouraged. An amateur beginner should seek advice from his trainer if the slightest difficulties in operating the equipment arise, since the trouble-free use of the equipment is the key to safe

Scuba diving is a rather complex device. Experts say that creating a homemade scuba at home is quite difficult. To do this, you must have the appropriate knowledge and be able to work on good turning equipment. Those who are interested in the question of how to make a homemade one should learn as much as possible about this device.

History

The word "aqualung" in translation means "water lungs". History shows that the apparatus was created gradually. The first to have patented the surface air regulator and adapted it for use in scuba gear. In 1878, pure oxygen was invented. In 1943, the first scuba gear was created. Its authors were Frenchmen Emile Gagnan and Jacques-Yves Cousteau.

Device

Those who decide to create a self-made scuba gear should know that this device consists of 3 main parts and several additional devices:

• Balloon... Usually one or two containers with compressed breathing mixture are used. Each container holds 7 - 18 liters.
• Regulator... Consists of a gearbox and a lung governed demand valve. A scuba can contain one or more gearboxes.
• Buoyancy compressor. An inflatable vest, the special purpose of which is the regulation of diving depth.
• Pressure gaugeequipped with a signal triggered when the air pressure reaches 30 atmospheres.

Features:

Those wishing to create a self-made scuba gear need to know about the features of its components.

• Balloon high pressure, which is part of the scuba gear, is an air storage tank. The working pressure in it is 150 atmospheres. A standard cylinder with a capacity of 7 liters at this pressure holds 1050 liters of air.
• One-, two- or three-cylinder scuba tanks are used. Usually the capacity of the cylinders is 5 and 7 liters, but if necessary, 10-, 14-liter cylinders are used.
• The shape of the cylinders is cylindrical, with an elongated neck, equipped with internal thread for attaching a high pressure tube or branch pipe.
• The cylinders are made of steel or aluminum. Steel cylinders are covered with a protective anti-corrosion layer, which is used as zinc. Steel cylinders are more durable than aluminum cylinders, but less buoyant.
• The cylinders are filled with a gas mixture or compressed filtered air. Modern containers are equipped with overfill protection.
• They are connected to an air reducer, which reduces the pressure from 150 to 6 atmospheres throughout the operation of the scuba gear. With such pressure indicators, the breathing mixture enters the lung governed demand valve.
• The lung demand valve is the main device in the scuba gear, as it supplies breathing air, the pressure of which is equal to the pressure of water on the chest area of \u200b\u200bthe diver.

Scuba types

Those who decide to design a self-made scuba gear should know that three types of equipment are used in diving: open, closed, semi-closed circuits. They are distinguished from each other by the way they breathe.

Open circuit

It is used in inexpensive, lightweight and small equipment. Powered exclusively by air supply. When exhaled, the processed formulation is discharged into the environment without mixing with the mixture filling the cylinders. Thanks to this, oxygen starvation or carbon dioxide poisoning is excluded. The system is simple in design and safe to operate. But it has a significant drawback: it is not adapted for the high flow rate of the breathing mixture at great depths.

Closed circuit

The scuba diving works according to the following principle: the diver exhales air, which is processed - cleaned of carbon dioxide, saturated with oxygen, after which it is again suitable for breathing. System advantages:

• small weight;
• insignificant dimensions of equipment;
• diving in deep water is possible;
• a long stay of the scuba diver under water is provided;
• it is possible for the diver to remain unnoticed.

This type of equipment is designed for a high level of training, beginners are not recommended to use it. The disadvantages of the system include its significant cost.

Semi-closed circuit

The operating principle of such a system is a hybrid of open and closed circuits. Part of the processed mixture is enriched with oxygen, after which it is again available for breathing, and its excess is discharged into the environment. At the same time, different immersion depths provide for the use of different gas breathing cocktails for breathing.

Reserve source

Many divers use mini scuba tanks as a reserve cylinder. The Mini Model is a compact system designed for breathing underwater at shallow depths. It includes a gearbox with a mouthpiece and a small-capacity container with air. Air volume indicators depend on the individual characteristics of the scuba diver.

Scuba application

Scuba diving helps a person to swim freely underwater. The need to walk on the bottom or stay upright is eliminated. This is due to the widespread use of equipment not only by divers, but also by cameramen, repairmen, archaeologists, ichthyologists, hydraulic engineers and photographers, etc.

Many people try to make homemade scuba gear with their own hands. The motivation for making such a decision can be both a desire to save money and an irresistible love of technical creativity. Network users willingly share tips and tricks for making the device at home.

"Sparka": homemade scuba diving from a gas cylinder

You will need:

• metal-composite, steel aviation with valves for cutting off the oxygen line (from a kickback) and check valves. Each volume: 4 liters, weight: 4.200, working pressure: 150 bar.
• Aviation oxygen valve
• The flywheel is homemade.
• Reducer from the ejection seat.
• Soviet propane gas reducer.
• Homemade steel spring, etc.

How to make?

1. The cylinders are connected using stainless steel clamps (can be made from tanks washing machine). Inserts made of wood, covered with epoxy-based fabric, with black PF paint, are inserted between the cylinders. Holes are drilled in the gearbox cover so that water does not stagnate.
2. The automatic activation of the oxygen system is retracted. A lever with a check is installed.
3. A home-made regulator for scuba gear can be made from a spring made of stainless steel wire connected to the safety valve of the reducer and a duralumin cap with a fitting on the outlet for connecting a lung demand valve. The reducer is being adjusted (pressure setting - 6.5 bar).
4. The lung demand valve can be made from Soviet gas reducer... In its body, you need to insert 2 fittings made of duralumin tube (diameter - 16.5 mm). On one of them, put on a mouthpiece with a stainless plate clamp. In the other, glue a textolite glass with a gas mask valve. If one mushroom valve quickly fails, it should be made of a rubber reinforced mug (can be cut from shoe covers of a Soviet chemical kit) and a bolt with a nut that secures the valve directly to the seat. Instead of the old connecting nipple, a new one is made of duralumin, which is glued on an epoxy base in place of the old one. The valve seat diameter is 2.5 mm.
5. To counteract the opening force of compressed air, a homemade pulling spring is installed in the lid, which is hooked in the upper part of the lid by a horizontal pin.
6. The membrane is made of the same rubber from shoe covers. A washer with a low weight is installed on it to eliminate vibration during inhalation. The inspiratory valve pad can be hand carved on high speed emery from a piece of rubber.
7. The lung demand valve is tightened with three bolts. Tightened even by hand, they are able to hold the membrane well. The lower part of the lung demand valve is equipped with a riveted stainless steel plate for additional comfort of the equipment, which is installed under the chin.
8. Nylon shoulder straps are made from pieces of halyard without adjustment due to lack of need. The hip belt may not have a quick release buckle.

Description of the result

At a depth of 10 m, scuba diving allows you to perform hard physical work (dragging along the bottom of cobblestones or fast swimming) without the effect of lack of air. It is not equipped with a purge button, but it is quite possible to do without it. The lung demand valve only needs to be adjusted the first time it is used, after which the minimum adjustment is made by moving the inspiratory valves. Works at a pressure of 6-7 bar. Inspiratory efforts are characterized as quite acceptable, similar to AVM-5. Weight - 300 g. It is connected to the hose without gaskets, using a conical connection. The device is very light (about 11.5 kg), compact and streamlined. It does not have a minimum pressure indicator.

Another option for homemade scuba gear from gas cylinders

1. Prepare a balloon. A container with a volume of up to 22 liters is used, depending on preference. You can use 2 cylinders of 4.7-7 liters. For normal diving, a 200 bar cylinder is suitable, for technical - 300 bar.
2. Prepare the pressure reducer with the same pressure as the cylinder.
3. Connect the reducer to the cylinder. Make sure that the pressure in it is 6-11 bar higher than the ambient pressure.
4. Connect the hose to the reducer, attach the lung demand valve to the hose. When it works properly and the master does not make mistakes, the pressure corresponds to the ambient pressure.
5. Connect regulators. Their number depends on the tasks set. For the planned recreational diving, 2 regulators are needed: the main and the reserve.
6. Install a BCD (not necessary for proper functioning of the scuba gear, but makes diving easier and safer).
7. Pump up the oxygen cylinder and check the assembled system. If all its elements are connected without errors and the device is working, you should make the first test dive to a shallow depth. If it is successful, the scuba gear can be considered ready for use.

Homemade scuba gear from a fire extinguisher

1. A cylinder from a carbon dioxide fire extinguisher is used (pressure - 150 bar, capacity - 5 liters, weight - about 7.5 kg)
2. The valve must be turned to a round shape, screwed into the T-shaped fitting (from the cylinder from the ejection seat), which must be equipped with a charging valve.
3. Two duralumin plates are installed on it, tightened together.
4. The reducer is mounted on them, which is a converted second stage of the oxygen reducer from the ejection seat (works from 8 bar).
5. A home-made safety valve is being made, the diameter of the membrane is reduced using 2 plates.
6. A valve seat of a reducer with a diameter of 1, 2 mm, a valve cushion (made of fluoroplastic) are manufactured, in addition, some other minor alterations must be made.
7. The lung demand valve is similar to the model described above (see the "Sparka" section: homemade scuba gear from a gas cylinder "). A housing from another reducer is used, as well as homemade exhalation and inhalation valves. The balloon is fixed with duralumin clamps on the fiberglass back.

Result

The device is reliable and trouble-free in operation. The main problem in maintenance is corrosion of the duralumin gear housing in salt water. It is recommended to use silicone grease to solve the problem. The equipment is not equipped with a pressure gauge, there are no filters (you can use a siphon tube in a bottle with small holes at the end). Weight - 9.5 kg.

There are other options on the Internet for homemade models of scuba gear from a fire extinguisher.

Option number 1

• The device is made from a cylinder - receiver (2 l) from a fire extinguisher.
• Fastens to the chest area.
• Instead of a regulator, a homemade pneumatic button is used to manually supply air for inhalation.
• The device is equipped with a non-return valve, which cuts off the air line in case of a rupture of the air supply hose.
• There is no gearbox, therefore it is used at a limited immersion depth.
• A spring presses the diaphragm against the valve seat. When you press the lever, it rises and the air is inhaled. The exhalation is carried out into the water using the exhalation valve.
• Air supply from the surface is carried out from a transport welding cylinder with a volume of up to 40 liters. A lung machine is connected to the device.
• The pneumatic button fixed on the hand is more convenient than the button that you have to hold in your hand. The hand is partially released and used to perform some kind of work.

Option number 2

• A fire extinguisher cylinder (1.5 l) is used.
• The device uses a manual inhalation delivery system.
• The equipment is equipped with a valve - pneumatic button, valve and reducer.
• It consists of a tube screwed into the union from the fire extinguisher, in which there is a plastic check valve, pressed against the conical seat by compressed air and a spring. A body with a membrane and a pin pressing on the plastic valve is screwed onto the tube. On the reverse side there is a lever designed to be pressed with a finger.
• The air coming out of this device passes through the nozzle (diameter - 2 mm), then goes into the mouthpiece for inhalation. Exhalation is carried out using a valve.
• The weight belt is quite simple to manufacture. It is made from lead cylinders cast from duralumin tube with a longitudinal cut. Equipped with a homemade quick release buckle.

There is no doubt about the reliable functioning of the equipment, but the tightness of the plastic valve that closes the cylinder is problematic.

How to make scuba gear from a bottle?

The Internet offers instructions on how to make homemade scuba diving from a bottle. According to the author who provided it, you can use a sprayer used in gardening for this. It is easiest to find at your gardening store. When choosing a container, you should not give preference to too large bottles: they will strongly "pull" upward.

You will need:

• sprayer (pump);
• flexible hose (plastic);
• underwater snorkel used for diving;
• capacity (bottle).

Technology:

1. First, remove the stop installed in the sprayer. This is to ensure that as much air as possible comes out of the sprayer.
2. A hose is pulled over the top of the sprayer, carefully sealed with silicone or hot glue.
3. A plastic bottle cap is installed on the bottom of the underwater tube, with a preliminary drilled hole by the diameter of the hose.
4. A hose is inserted into the hole, carefully glued and sealed. Simple scuba gear is ready.

Operating principle

The bottle is connected to a pump sprayer and is filled with air. The 330 ml container is filled with air with 50 strokes. This amount of air is sufficient for 4 full breaths. A larger container should be equipped with a weight, since a bottle filled with air will float up. To extract air from the bottle, just press the corresponding button on the spray.

Conclusion

Making your own scuba gear will save you money and provide an opportunity to feel the incomparable pleasure of participating in the creative process. In order to ensure the safety of their own life and health, craftsmen must strictly follow the instructions.