Airbrush pressure switch. Instructions for making a homemade airbrush compressor. The principle of operation of the airbrush

01.04.2020

As a receiver, an OHP-10 fire extinguisher was obtained with a declared volume of 8.7 liters, in fact measured and amounting to 10.5 liters. I got the fire extinguisher during my internship at the enterprise. I just went up to the head of the fire safety department, or xs as they call him, and asked if there was a decommissioned fire extinguisher. They gave him.

I must say right away, do not try to release its contents in the bathroom. While I was dragging it home, I went behind the garages and let it out there (it will bring a lot of childish pleasure;). a PM5 pressure switch was also purchased, designed for water, but also suitable for air. I also bought two water separator filters, and one automobile fuel filter, finely cleaned (I immediately put it at the compressor inlet.

I bought all sorts of adapters, crosses, as well as a reinforced hose from pvc inner 10 mm in diameter. Everything that was included in the set, see the photo. I also purchased a valve (at first I thought that I would regulate the pressure with it, and that it does not differ from the gearbox in any way (naive).

After I figured out that the valve and the gearbox are, after all, somewhat different things, I bought a gearbox with a pressure gauge, and a separate pressure gauge, to measure the pressure inside the receiver. They also bought a thin hose xs of what diameter, in a pet store, costing as much as 10 rubles / meter :))). It is either silicone or whatever, but very flexible, light and durable, there is nothing better for approaching an airbrush.

And of course, where without the FUM tape, which is sold in any plumbing store.

First of all, we fasten the balloon to the base (I think you can figure it out yourself, there are no tricks here). We take out all the good from the lid, and from the inside of the fire extinguisher, we leave only the balloon itself and the lid.

In the hole in the cast-iron cover, we cut the pipe thread, 1/4 inch. We also wind the FUM tape on the wide thread on the balloon, make a rubber gasket (in theory, I should have had it, but I did it somewhere, and as a result I cut it myself from the camera for the car, after construction I found my own))) ) and screw on the cast-iron lid.

We screw an adapter from 1/4HP to 1/2HP inch into the opening of the cover.

We screw the pressure switch into the crosspiece through the adapter 1/2НР-1/4НР, screw the adapter 1/2НР-1/2НР from the side.

On one side, we fasten a gearbox to it through an adapter 1 / 2NR-1 / 4VR, which has a 1 / 4NR thread.

From the other end, we also screw a pressure gauge with a 1/4HP thread through the adapter 1/2NR-1/4VN. On the opposite side of the cross, we screw in the valve (for venting air from the balloon), which has a 1/2HP thread.

Next, we draw up a line of another filter, from the side of the inlet there is a 1/2BP fitting, which is connected through an adapter 1/2НР-1/4ВР, we screw it onto the filter having a 1/4НР thread. From the outlet, I got a little excited, because there were extra parts, and there weren’t some necessary ones, in the end it turned out like this.

An adapter 1/4НР-1/2НР is screwed into the hole in the 1/4ВР filter, a tee is screwed to it (here I had an extra one), on one side of which a plug with 1/2НР is screwed, on the other side of the tee opposite to the filter, a fitting is screwed 1/2HP.

ATTENTION: I did it so tricky because there were extra parts so that you would not make this mistake, do it this way, a 1 / 4HP-1 / 2HP adapter is screwed into the outlet, and a fitting for a hose with a 1 / 2BP thread is screwed onto it. The bottom layout will be given specifically for this option.

Further, to the hole with an external thread of an incomprehensible section and pitch (I could not find it), which comes out of the fire extinguisher as an outlet nozzle, a reinforced hose is ideally suited, which we fix on top with a clamp.

From the other end of the hose we insert the fitting from the filter and also fix it with a clamp.

Next, we again insert the reinforced hose from the inlet fitting of the filter and bring it to the compressor outlet pipe. how to fix this good there, I think you will figure it out. I have a tricky system of several gaskets there and everything is clamped on top with a clamp.

In conclusion, we screw a 1/4HP fitting into the outlet of the 1/4BP filter, onto which we put a silicone tube that fits almost perfectly on it, and does not even require compression with a clamp, the second end of the tube is already to the airbrush.

Since the pressure after the reducer is small compared to the receiver, the tube can withstand it without any effort. At the inlet to the compressor, as I said, an automobile filter is installed to clean the air. Butter...

Regarding the oil change, three pipes come out of the compressor. one input, another output, the third sealed - and there is for topping up the oil. Here we are tearing it apart (I just had a bite with pliers), but make sure that sawdust does not get inside, otherwise the motor may be finished.

Drain the oil from there. I honestly didn’t measure how much I poured, but something about a glass. I poured back the automobile oil of the formula 10W40, with a volume of about 350 grams. IMHO car oil better themes, which, firstly, has a bunch of additives that protect against any threshing floor, and secondly, unlike spindle oil, it does not "absorb" moisture.

Sources: SdelayKompressor.ru

Decorative painting of a car and drawing patterns on body parts are complex specific tasks. To solve them, it is necessary to use a professional set of equipment with high quality and stable performance. To apply paint, you will need a blower, as well as a high-quality paint gun. In this case we are talking about the airbrush, which helps to apply paint with precise boundaries, repeating a pre-prepared layout. Given the high cost of a set of equipment, many people prefer to assemble a home-made compressor for painting cars and drawing pictures on parts.

This is a rather complicated equipment, but the principle of its operation is found in everyday life quite often. Many industrial and household tools, home appliances work on the principle of air injection. Therefore, creating a good compressor simply with your own hands can be quite simple and inexpensive. But first, research the market. It's possible that you can afford to buy all the airbrush equipment and not have to spend time and your own labor doing it yourself. It will be easier and faster for the buyer himself.

Today, many potential experts are wondering how to make an airbrush compressor with their own hands. Using old compressor equipment, you can create all the necessary technical means. But the problem is that a product created by oneself is unlikely to be able to work in professional modes. Let's first decide what costs for the compressor will be appropriate. There are several different areas to consider:

an air blower for a home airbrush and for amateur purposes should not cost more than 2-3 thousand rubles;

with self-assembly of a tool for more professional painting, it is worth setting a limit of 5 thousand rubles;

the compressor unit for the airbrush at the station has a ceiling of 15-16 thousand rubles during assembly;

an industrial device with a long resource can cost up to 30,000 rubles to create;

a comprehensive universal installation for painting and drawing pictures will cost up to 100,000 rubles.

If your calculations are outside this budget, a homemade airbrush compressor will not be a profitable solution. The problem is that many people buy everything necessary equipment and decide that it will be much more profitable to collect everything yourself. But in fact, such work with your own hands gives the simplest compressor, which does not always fulfill all the requirements and conditions of a good airbrush. So before assembling it is worth calculating all the financial costs yourself.

What can a compressor be made of for airbrushing purposes?

Proper painting is not possible if your device does not create constant pressure. Products with an air injection tank will require several important sensors. If pressure sensors do not work efficiently, all do-it-yourself work will be useless. For painting with an airbrush, you should use the following technology for assembling a compressor device:

the air blower itself can be pulled off the old refrigerator, which is no longer needed on the farm;

you will also have to organize a receiver (tank for air pressure), this may be membrane tank pumping station;

it is important to install a pressure gauge and pressure switch on the tank for automatic shutdown air pumping;

you will have to choose a set of adapters and fittings for the connection yourself, since the set will be individual;

you will also need hoses that are resistant to pressure and to aggressive media such as paint and solvents;

the last step will be connecting and checking all the work done, connecting the airbrush.

After that, high-quality painting of car parts with your own hands is possible. The outlet pressure can be small, for airbrushing you will need a maximum of 2.5 atmospheres, so all of the above equipment is fine. You can use other types of devices that you have available. Such a compressor for an airbrush with your own hands will serve and work for a long time and without unnecessary breakdowns.

How much would it cost to build such a supercharger?

The question of cost strongly depends on what you have available. You can quite easily find an old refrigerator in the country (in extreme cases, buy it from a neighbor in the country for a couple of hundred). Also on the ad site you can find a very cheap membrane tank for the receiver. Hoses and connectors will have to be bought new, but relays and sensors will be the biggest expense item. The calculation will be individual for each, and we will perform an approximate calculation:

Compressor - you can and should use a used version (200 rubles).
Receiver - we buy an old rusty tank, bring it to condition with our own hands (200 rubles).
Connectors - here everyone will have their own kit, you need good materials(1000 rubles).
Sensors and relays - the set will also be individual, so the cost is different (300 rubles).
Airbrush and other accessories for work - a completely individual budget.

Since we are talking directly about the injection equipment for painting, the airbrush itself can be overlooked. In total, it turns out that for 1700 rubles you can create a completely functional and high-quality supercharger with good settings for airbrushing. It is also possible to make a compressor for painting a car completely in a similar way, but the pressure in this case should be higher.

Comparable in cost with new painting devices

Alternatively, you can theoretically find a compressor device on the market for the same money. But it will be a Chinese-made device, without a receiver, with a maximum capacity of 10 liters per hour. You will have to replace the hoses soon, and it also makes sense to change many other parts.

As a result, paid a couple of thousand rubles will be only the beginning of your costs. If you decide to buy a device for painting work, you should give preference to a high-quality and reliable version of the technique. It will cost many times more than assembling compressor equipment from improvised materials. So self assembly still remains a relevant and profitable task.

Summing up

If you want to quality device for air injection, you will have to work hard and get good spare parts for such a module. It is quite possible to create a compressor with your own hands, but it is important to take into account the requirements of airbrushing. Often, with the help of simple details, you can achieve high quality and excellent technical aspects of the equipment. It is important to assemble a good set of spare parts in order to completely get rid of the troubles associated with poor workmanship and insufficient performance of the device.

If you decide to assemble the equipment yourself, you will also need a number of new and reliable materials. These are hoses, sensors, fittings and relays that are not worth buying used. Another important aspect of working with such a device will be the professionalism of the assembly. The problem is that the work will be done under high pressure. If during the process of painting a car the hose is pulled out of its seat, there can be a lot of trouble. So it is better to pay attention to the quality of each purchased item. In this case, it is better not to pursue low cost and other similar benefits.

Modern high-quality painting equipment, which is designed for airbrushing, in in large numbers present on the modern market. This makes it possible to produce the most different types works related to painting any kind of surfaces, ranging from various models of serious military equipment to the body of a vehicle.

Many craftsmen and car owners are well aware that airbrush compressors can only be purchased at a fairly high cost, especially if from well-known manufacturers. It is for this reason that many decide to make this or that equipment with their own hands.

The principle of operation of the airbrush

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The basic principle of the airbrush is relatively simple. It consists in high-quality spraying of the coloring matter under the pressure of flowing air.

A modern airbrush is a fairly complex pneumatic tool that can be used in modeling and when carrying out painting and repair work.

In order for this high-quality and functional device to work as efficiently as possible, you should make sure that all the required equipment is available, in particular the compressor. It can be purchased, and subject to availability necessary tools and equipment make it by yourself.

The main components of the compressor

To assemble a high-quality homemade airbrush compressor designed for an airbrush exclusively with your own hands, you need to understand the basic principles of the entire system. The equipment of such a plan consists of several elements:

Air pump, which pumps it into a special receiver;
You will need the receiver itself, which is designed to concentrate air masses, as well as to smooth the air flow at its outlet;
It is important to take care of purchasing additional equipment. it can be a gearbox, a special pressure switch, a pressure gauge, safety valve and special connecting hoses;
A platform designed to accommodate all the necessary work items.

Particular attention should be paid to the air pump. It can be any device that is able to pump air masses, thereby creating a working pressure for high-quality work of the airbrush.

You do not need to use a conventional vacuum cleaner as a compressor, as it is not able to provide the proper pressure.

A special piston compressor from a failed refrigerator will do. You can also use a special membrane compressor from the vehicle. It is the second option that should not be purchased, since it is characterized by insufficient performance and power indicators.

Usually for a device such as an airbrush compressor category high pressure many use old, no longer used fire extinguishers. You can also use special car receivers, compact propane and oxygen cylinders. These are sealed containers that are able to withstand certain pressure indicators.

Required parts and elements

In order to independently make a high-quality and productive compressor for airbrushing, it is worth preparing the following details:

The compressor itself is from a failed refrigerator.
Powder extinguisher.
Pressure switch.
Gas reducer, which can be adjusted if necessary.
Pressure gauge.
Special safety valve.
Lots of connecting hoses.
Fuel filter from a car.
Adapter kit.
Clamps.
Platform.
Quality fasteners.

If there is no old refrigerator, you can purchase a compressor on the market from professionals who are engaged in work related to the repair of refrigerators.

It is worth noting that such parts from refrigerators can be of two types - rotary and piston. If there is a certain choice, preference should be given to the piston one, since it has a relatively simple design, but it is considered more reliable.

Modern piston units are usually equipped with three special tubes. One of them is designed for pouring oil into the device, the other two for circulating the air mass. To determine which one is which, it is enough just to bring your hand to them.

Preliminary work

The device of such a plan consists of a high-quality engine that spins the piston shaft and flywheel, they, in turn, pump air into the cylinder. During the assembly process, it is required to ensure that two valves are present at the end of the cylinder at once. One of them is designed to pass air masses, as for the second, it goes outside. Before assembling the compressor, the following steps must be taken:

Clean rust with a special converter;
Thoroughly lubricate the piston, shaft;
After removing the valve plate, to check all seals and piston stroke present;
It is equally important to check the operation of the valves.

Refrigerator motors usually have their own lubrication system, so you just need to fill it with special oil. This can be done through a special tube.

Features of working with the receiver

The capacity for the receiver is required to choose one that has a volume of at least 20 liters. If a 10-liter receiver is quite enough for an ordinary refrigerator, then just such a volume is needed for a high-quality airbrush. To get a receiver of this size, you can use a professional welding machine connect two containers. In addition, you can use a special cylinder taken from a conventional fire extinguisher.

With the selected capacity, the following processes are required:

Drill holes that are designed to connect the receiver to the air supply and directly to the airbrush itself. If it was decided to use a more simplified version, one hole would be enough, to which, therefore, a special plumbing cross is screwed.
A cavity made of metal must be very carefully cleaned from the results of the drilling. A similar element is processed using a rust converter.
By means of cold welding and hoses, the tubes from the installed crosspiece must be connected to a pressure gauge and the air mass supply must be checked.
Without exception, all parts must be fixed strictly on one platform. It can be a sheet of metal or chipboard.

It is worth noting that for high-quality airbrushing, only fresh air, therefore, a special filter must be put on the input of the installed engine. If necessary, you can do it yourself, using several layers of paper at once.

This device during use will often have to be turned on and off, especially when the pressure gauge shows the required pressure level. To simplify this process, can be purchased at a special hardware store just a trip relay.

The main advantages of the compressor

Homemade compressor for airbrushing has many advantages. These include:

Affordable cost, this equipment will cost an order of magnitude less than the factory model;
The noise level is an order of magnitude lower than that of a compressor that is sold on the modern market;
All nodes and elements of such a home-made installation present in the composition, if they fail, can be quickly and without any problems repaired.

All this says that making a compressor for airbrushing with your own hands is an order of magnitude more profitable than purchasing a similar production analogue.

Are you interested in airbrushing? To implement creative ideas, you will have to acquire an airbrush and a compressor suitable for it. How to choose the right compressor in the store or how to assemble an airbrush compressor with your own hands, we will consider further.

When performing airbrushing, air enters the airbrush from the compressor through the attached hose.

Which compressor to choose? Its specifications should vary depending on the conditions where you will be working with the airbrush. For small projects at home, a smaller, quieter compressor will do, and for the garage, you can purchase a more powerful model. When choosing the right compressor, look at characteristics such as capacity and pressure applied to the job.

Having decided on where and for what purposes the airbrush will be used, you should choose the right type of compressor. There are a great many of them on the market, so choosing a compressor for an airbrush is not so easy: each model has its own strengths and weak sides. What are the types of compressors?

On the video: compressor and airbrush.

Membrane

The membrane compressor has one very important positive point - a low price. The membrane oscillates, thereby providing air flow. Such an airbrush with a compressor is suitable for small-scale work at home. The air pressure in it does not exceed 2-3.5 A. The air outlet is enough for only one connected airbrush. Do not expect stable pressure from such a compressor, it can jump, go on the rise, which will undoubtedly affect the quality of work.

Piston

This type of compressor has the best performance for airbrushing. Due to the movement of the pistons, pressure is created in the cylinder. Such devices are enough small size are convenient and easy to manage. The power of such a compressor is enough for several airbrushes.

Among piston compressors there are oil and oil-free. The latter will save the owner from mandatory care, regular oil changes. The air given out by the compressor will not contain oil vapours.

The oil piston compressor is quite powerful, able to ensure the simultaneous operation of several devices. Very durable, but requires regular maintenance and oil changes.

Having decided on the type of compressor suitable for your needs, it is necessary to ensure a stable pressure. It can be created by a reliable receiver - a reservoir in which air accumulates and is pumped.

Required filters

The air supplied to the airbrush must be cleaned, otherwise grains of dust, dirt, oil drops will fall into the sprayed paint, thereby ruining the work. A special air filter will help against such failures. Also an important acquisition will be a moisture trap. It is needed to collect the formed droplets of condensate that appears during the operation of the compressor.

An apparatus for regulating the pressure of the exhaust air and an auto-shutdown system when the maximum pressure level is reached will also be useful.

Compact version

The oil-free and tankless mini compressor is the most compact of all airbrush compressors. It is quiet, it works from a regular outlet, but the pressure it gives out will not be higher than 1.6 A. The mini device will perfectly cope with miniature works that do not exceed the size of the sheet. It is ideal for artists who work outdoors, in confined spaces or on limited surfaces.

The small unit works almost silently. It has only one pressure mode, the “baby” overheats quite quickly too. This forces you to pause during work, to let it cool down. But the small size still makes this model very popular with creative people. Her hose is more compact, they do not stretch to a large size.

What's the price?

In almost any specialized store you can find airbrushes for every taste and budget. Depending on the specifications and the manufacturer, prices for models vary from 3,000 to 40,000 rubles.

Many craftsmen quite successfully manage to assemble the necessary equipment with their own hands at home. If you're willing to sweat a little, then by following the instructions below, you can assemble a homemade airbrush compressor.

DIY compressor

You can make a compressor at home using spare parts from an old non-working refrigerator. If he himself is broken, and the unit is in working order, it is suitable. Ideally, take a foreign-made refrigerator - it is more economical and quieter than domestic specimens. With a little effort and no welding, you get a solid compressor:

1.Preparing details. Remove the compressor from the refrigerator, be sure to keep its native tubes, do not saw them off so that the chips do not get into the unit. Unscrew the relay, if it is working, no - buy a new one.

Advice! The receiver needs a capacitance. A hydraulic accumulator from a water pump with a capacity of at least 24 liters is ideal.

An emergency valve with a pressure switch up to 2.8 bar is also useful. The valve will help in case of emergency shutdown of the system. The relay can be adjusted later by turning the knob.

2. Assembly. Fasten the component parts of the structure together with fittings and various adapters. Before installing the motor with reservoir, mount the back pressure valve. Secure the joints with clamps, cover with sealant, put oil filters. Before completing the assembly, change the old oil in the compressor.

Attach a container used as a receiver to a plywood base, install a compressor, an oil drain and a relay to start. You should have two filters - on the outlet pipe and on the connection of the receiver to the compressor. Connect the relay strictly according to the instructions. Don't forget to connect the hose. Everything, your home compressor is ready to use.

Such a compressor is perfect for airbrushing, but from an aesthetic point of view, this option is significantly inferior to store-bought counterparts.

How to make a mini compressor

If there is a limitation in size and you want a prettier option, you can design a mini compressor from a car pump:

1. We buy a pump at the car market. From the whole variety of accessories for tire inflation, we choose a powerful and inexpensive one. We do not consider Chinese options, they have a plastic case. An electric motor must fit in the case, so absolutely "kids" will not work either. We take a medium size with a metal case. Make sure it comes with a long hose.

2. Electric motor. The vast majority of electrical automotive pumps Comes with cigarette lighter charger only. In order not to mess with altering the power cord, look for adapters for a conventional 220V power supply.

3. We select the receiver. A metal container will be able to withstand the planned voltage of 7 atmospheres, plastic will not withstand it, it will crack.

Advice! good option There will be a fire extinguisher with a volume of 15-20 liters. You can use one or two, depending on the desired volume.

A fire extinguisher can be found in friends' garages or at a scrap yard. Didn't find it? Contact the nearest fire station. There sometimes come across old, not subject to recharge, instances. The main thing is that the body of the fire extinguisher is in good condition - without cracks, chips and chips.

Open the fire extinguisher and assess the condition of the metal from the inside. Ideally, the inside should be free of corrosion and covered with paint. In the presence of rust, it is removed by pouring a cleaning liquid inside. After cleaning, the cylinder is washed with water, dried well.

We carefully examine the body - some cylinders have additional holes, valves that are not needed for an airbrush. They should be thoroughly boiled.

The outer paint of the cylinder must be washed off, it can be done with a special liquid or spray. It is more convenient to use a wash in an aerosol.

Before washing off the paint, do not forget about the precautions - glasses and a respirator mask will be needed so that chemicals do not get on the mucous membrane.

Applying the paint remover is simple: follow the instructions, apply layer by layer on the surface to be treated with an interval of 15-20 minutes. The old paint will begin to bubble and peel off the can. We take a spatula and carefully clean off the old layer of paint, then process the balloon again. Repeat the procedure until all old paint will not be deleted. You may have to repeat the procedure 5-6 times.

While the old paint is soaking, check the condition of the fire extinguisher cover. It, too, may be covered with corrosion, which will need to be cleaned and the old rubber gasket replaced.

After the rust is cleaned inside and out, and the old paint is removed, we proceed to the priming of the cleaned metal fire extinguisher cylinder. After applying 3-4 layers of primer, leave to dry, choose the color of the final paint to taste.

4. Construction assembly. Fittings for connecting all elements of the system, required gaskets with clamps, the easiest way to find it is in a nearby plumbing store - simple, affordable, durable. To automate processes, it is necessary to install a pressure control relay. It is necessary to maintain and normalize the pressure inside the system. The pressure should not be more or less than necessary (not exceed the maximum, not be below the minimum). Homemade airbrushes are not designed for strong jumps.

Important! Don't forget to install check valve to reduce the pressure pumped by the pump (otherwise the system may burst).

Valve use metal, plastic can be short-lived. Hose and gun pick up to your own taste. The finished structure can be “sheathed” with wood or plastic, mounted on a trolley on wheels for ease of movement.

The compressor is a necessary device for airbrushing. It does not matter at all whether you choose a ready-made store version or design it yourself, as a result of the work, you will be able to enjoy new opportunities and realize your artistic ideas.

Oil-free compressors for airbrushing (1 video)

Different types of unit (17 photos)

A man can assemble and fix anything. And the more difficult the task, the more desire to work can arise. One of these difficult tasks can be a do-it-yourself airbrush compressor, which is not always easy to assemble. Despite the fact that it looks very serious, this will not frighten a real lover of technology.

As a rule, the compressor is taken as the basis for the work, which was previously removed from the old refrigerator. Sometimes they take a car electric pump, and some craftsmen also come to the rescue with a fire extinguisher.

Pros and cons of a homemade device

Like any technical product, a homemade airbrush compressor has a number of both positive and not very pleasant sides. If you look globally, then the main advantage of the "manual" compressor is aesthetic. It is always a pleasure to work with a personal assembly machine. The feeling that it was you who made this compressor is very motivating to work.

In addition, in most cases (when based on refrigeration compressor, a fire extinguisher or an electric pump of a car) there is a low noise level during operation, while a purchased one can make a very loud noise.

As for the price, the cheapness of a homemade compressor is a very stretched myth. It all depends on the selected components, so the price of such a product is very often a little cheaper than buying a factory one.

Stage one

The handmade compressor is good because it can be made exclusively for your needs. For example, if you make a compressor for an old-style airbrush (single action), then the receiver, in principle, is not needed. This cuts down on assembly costs.

But modern painting conditions require better technique, so a double action airbrush is in use. It controls the airflow, so a receiver is essential.

Compressor directly

The most popular option is to take it out of the fridge. Pick up technical side desired compressor sales websites help refrigeration technology. The most important criterion when buying such a compressor is the price. The air injection characteristics are the same in almost all models.

Receiver

It must be a container that is capable of handling gas (or liquids) under pressure. Use for these conditions plastic barrels or canisters are not recommended. The first option to make a good receiver would be a fire extinguisher. A hydraulic accumulator, oxygen tank or propane tank can also be used. When the main parts are selected, it remains to put them together.

Stage two: working with nodes

When assembling the selected compressor and receiver, you need to securely connect all transitions and nodes for high-quality painting in the future and follow clear rules:

Don't forget adapters. To increase the tightness, you can make the joints smeared with poxypol.

Stage three: assembly in two stages

The main problem with the first part of the assembly is the node that connects the receiver. In the case of a fire extinguisher, the valve is generally not suitable for this design. Therefore, it must be cut down and a suitable fitting conductor welded on.

For a less careful but faster build, you can do the following:

Remove control.
Leave only the internal mechanics.
To the remaining outputs, pick up adapters with internal thread. Press with a wrench. It is not necessary to screw up until “failure”, as often there is a mismatch with adapters.

It is enough to make a secure grip and lubricate everything with poxypol or cold welding.

The second stage of assembly is necessary for the convenience and presentability of the product. The device is not small (refrigerator parts, receiver, multiple knees and adapters), and carrying it in your hands is not always productive.

Therefore, an oak board or chipboard is used as a stand. A machine is mounted to it using self-tapping screws, and on the other side you need to install furniture wheels for convenience and mobility. Or you can build something like a cabinet to store everything you need for painting (directly paint, nozzles, etc.). Spare parts (adapters, nuts, wrenches) can also be loaded there.

Turn on moment

Reinsurance with automatic shutdown and on indicates that the connection line must necessarily go through a relay. You need to study the instructions that came with the compressor. This is especially important since it works in unusual conditions. Often there is a need to install a condenser (depending on the type of compressor, refrigerator, from which it was removed).

From the outlet we go to the switch. Then we connect the phase wire to the desired relay terminal. The neutral wire can go in two directions. If there is a ground wire, leave it; if not, connect it to the ground terminal on the relay. The second option is better.

As a result, we obtain protection by nulling. Then the phase and neutral wires go to the compressor starter drive. According to the indicated scheme, the wires are connected to the desired terminals. Everything is ready for painting. Let's summarize the materials used:

compressor (can be used from the refrigerator);
receiver (fire extinguisher, for example);
pressure switch;
manometers;
flexible hose (oil resistant);
adapters, sanitary pads, FUM tapes, etc.;
Chipboard or board for the stand.

This is a superficial list, but it covers all the main paint compressor parts. In addition, the entire product can be driven into a box or case, build a lid or otherwise decorate and give a solid and professional look. As mentioned above, in order to get the compressor, it is not necessary to break the refrigerator. Automotive electric pumps are often used and give good results. But their assembly system is a little different, and there are more difficulties in connecting to the power supply, the cooling system.