How To Pump A Bicycle Tube With A Thin Nipple

How to identify the cause of the descent

Punctures, cuts, and dents in the disc can be found by visual inspection. If this does not help, you can make a soapy solution, and Spray the wheel. air bubbles will indicate a puncture. However, if the puncture is very small, such a search can turn into torture: in this case, it is better to submerge the wheel completely in a suitable container of water. You can also find a defect when etching between the disc and the tire, and if there are problems with the nipple.

Nipple penetrations are easily determined with the help of water: everything is easier here, you do not need to bathe the wheel. you unscrew the cap, wet the nipple nipple. if the air poisons, you will see it by inflating an air bubble.

Technological problems. A very rare defect, inherent in low-quality rubber. Without going into details, I will say: there is such a thing as diffusion. This is the process of penetration of molecules of one substance into another. Simply put. the air passes through the rubber. It sounds crazy, but this is the physical law of our world. Such a defect is extremely rare, and the diffusion rate is so low that it cannot be overlooked. You just have to understand why the wheel, although rarely, needs to be pumped up.

If a problem is identified and you cannot fix it yourself, it is not shameful to do the same as experienced drivers. to go to a tire service, preferably a high-quality one, on which dubious patches are NOT sculpted. Also, the installation must have a balancing stand. balancing a wheel after repair is not even discussed. But knowing in advance how much time you will spend is very difficult. Perhaps the puncture is small, and it will be eliminated with the help of a special fungus within 15 minutes, or vulcanization may be required, with complete disassembly. that’s 30 minutes to an hour.

Homemade tubeless

In theory, with proper sealing, any tires of the middle price range, and better with Kevlar cord, can be repurposed into tubeless. You can insulate the rim with a few layers of reinforced tape or, at worst, tape. Bicycle nipple can be cut from unnecessary tube

It is important that he has a clamping nut, since a rubber pad will need to be placed under it. If the rims are not a complaint, you can fill the nipple hole on the rim with high-quality construction sealant on both sides

After that, we put on the tires, pour about 100-150 ml of bicycle liquid sealant into it and you can try to pump.

As practice shows, such self-made systems sooner or later still begin to let air in or tear off tires on hard tracks, so think carefully if you are ready to take such risks to save.

Homemade tubeless

In theory, with proper sealing, any tires of the middle price range, and better with Kevlar cord, can be repurposed into tubeless. Insulate the rim with a few layers of reinforced tape or, at worst, tape. Bicycle nipple can be cut from unnecessary tube

It is important that he has a clamping nut, since a rubber pad will need to be placed under it. If the rims are not a complaint, you can fill the nipple hole on the rim with high-quality construction sealant on both sides

After that, we put on the tires, pour about 100-150 ml of bicycle liquid sealant into it and you can try to pump.

As practice shows, such self-made systems sooner or later still begin to leak air or tear off tires on hard tracks, so think carefully if you are ready to take such risks to save.

The nipple is essentially a one-way valve, which is used in all kinds of pneumatic (inflatable) devices, in particular, bicycle tires.

There are three types of bicycle nipples:

  • Presta
  • Dunlop
  • Shrader

Presta or as it is also called “bicycle”

Presta (denoted as FV. French Valve, French or Sports, or SV. Sclaverand Valve) nipple. is becoming more and more popular. Recently, these nipples have been used not only on cyclocross, road, mountain racing and hybrid bikes, but also on mid-range models. Available in various lengths: 42, 60 and 80 mm. They are used in tubeless tires and can also be used in narrow and lightweight rims. With a special extension piece, they can be used in solid wheels where there is a need for a very long nipple. With a width of only 6mm, the nipple is the thinnest bicycle nipple. Its weight is 4-5 grams less than a Shrader-type nipple. The pump manufacturers solved the problem of nipple incompatibility. 95% of THESE devices on the bicycle market are universal. In order to pump the Presta chamber you need to Unscrew the pump nut and turn the rubber grommet over. Presta / Shrader adapters are also available, thanks to which you can use a regular car pump.

Rushing too quickly or using a poor quality pump in the Presta nipple can break the valve. On good expensive cameras, a replaceable screw-in valve is usually used.

A rim for a Presta nipple with an internal width of 17 mm can be reamed with an 8 mm drill under a Schrader, followed by machining the edges of the hole. it is believed that this does not significantly affect the strength, however, the guarantee for the rim will undoubtedly be lost.

Sсhrader or car

Schrader (AV. Auto Valve). The most common type of nipple. It looks like a threaded cylinder with a diameter of 8-8.5 mm. The standard length is 40 mm, but they are 60 mm long. The advantage of this nipple is its prevalence. In the absence of a pump, you can always pump up the wheels at a gas station, tire service, or by agreement with the driver. They are used on hybrid and mountain bikes of the lower and middle level, as well as on bicycles for extreme types of cycling. Also used in rear shocks and bicycle forks.

The big advantage is that almost all bike pumps are compatible with both Presta and Schrader.

The Dunlop is an obsolete type of nipple that is less and less common on bicycles. Used on Soviet bicycles. Nipple for 8 mm rim hole. Chambers with a Dunlop nipple can be pumped with a Presta nipple pump. A camera with a Dunlop nipple can be mounted on a rim with a Schrader hole without additional manipulation. Likewise, the Presta and Dunlop nipple end threads are the same, so the pumps (and caps) are always compatible.

Nipples also differ in their design:

Threaded metal. used in relatively expensive cameras (Schwalbe, Continental, Nokian, etc.). Most often, they have a fixing nut that prevents the nipple from displacing and sinking during inflation, which ensures high reliability.

Rubberized. used in cheap cameras, less reliable and comfortable than metal ones. Higher risk of damaging the nipple at the edge of the hole in the rim or tearing off if inflated carelessly.

It is difficult to recommend any of them as the best

Most importantly, the valve matches the hole in your rim and you have a pump that can pump it.

How to pump a bicycle wheel with a hand pump?

The bike pump is an essential tool in every cycling arsenal. Its presence allows you to solve the issue of tire pressure on your own, and not to drive the bike to a gas station or service.

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Hand pumps presented on the market are usually divided into 2 categories: ordinary and equipped with a pressure gauge. a special recording device. The latter allow, when pumping, to be guided by the pressure in the wheels, and not “by eye”, constantly checking the hardness of the tire. For riding on asphalt tracks The recommended pressure is 3.5 atm., For driving on the ground. 2.8 atm.

Schrader valve

This invention of the American August Schroeder (there are reading options: Schrader or Schrader) was patented in 1893 in the United States. Therefore, this valve is otherwise called American, but more often it is called simply automobile. the vast majority of wheels of modern cars and motorcycles are equipped with such a device.

It is also used in many refrigeration and air conditioning systems, where refrigerant recharging is required and in other systems as a unit for releasing excessive air pressure or process fluids.

The design of the Schroeder nipple consists of a tube into which the working unit is screwed. the core, which is a poppet valve that closes the air outlet from the chamber under the influence of a spring. Adjustable in height The protruding stem of the spool can control the air pressure in the chamber. The spool is screwed in with a special tool, which is often used as a protective cap. a metal cover with a plastic seal inside. A new word in such a system. built-in pressure sensors.

Pump-nipple adapters

Inflating a bicycle tube with a Dunlop nipple using a hand pump or an autocompressor designed for chambers with a so-called “car nipple” of the Schrader type is a certain difficulty. This service is often in demand by cyclists when driving on roads (highways), along which there are auto repair shops equipped with compressors.

How to pay for GASOLINE TWICE LESS

  • Gas are growing every day, and the car’s appetite only increases.
  • You would be happy to cut costs, but how can you do without a car in our time!?

In this article we will talk about what nipples for a bicycle camera are, what they are and how to choose the right device for yourself, at first glance.

A nipple is a nut that is specially shaped to secure the spokes in the rim of a bicycle wheel. A temporary connection nipple is usually equipped with a one-way valve and is used in all kinds of pneumatic (inflatable) devices, in particular, bicycle tires.

There are three types of bicycle nipples:

  • Presta
  • Dunlop
  • Shrader

Presta cycling

Presta (denoted as FV. French Valve, French or Sports, or SV. Sclaverand Valve) nipple. is becoming more and more popular. Recently, these nipples have been used not only on cyclocross, road, mountain racing and hybrid bikes, but also on mid-range models. Available in various lengths: 42, 60 and 80 mm. They are used in tubeless tires and can also be used in narrow and lightweight rims. With a special extension piece, they can be used in solid wheels where there is a need for a very long nipple. With a width of only 6mm, the nipple is the thinnest bicycle nipple. Its weight is 4-5 grams less than a Shrader-type nipple. The pump manufacturers have solved the problem of nipple incompatibility. 95% of THESE devices on the bicycle market are universal. In order to pump the Presta chamber you need to Unscrew the pump nut and turn the rubber grommet over. Presta / Shrader adapters are also available, thanks to which you can use a regular car pump.

Rushing too quickly or using a poor quality pump in the Presta nipple can break the valve. On good expensive cameras, a replaceable screw-in valve is usually used.

A rim for a Presta nipple with an internal width of 17 mm can be reamed with an 8 mm drill under a Schrader, followed by machining the edges of the hole. it is believed that this does not significantly affect the strength, however, the guarantee for the rim will undoubtedly be lost.

Sсhrader automobile

Schrader (AV. Auto Valve or Automotive). The most common type of nipple. It looks like a threaded cylinder with a diameter of 8-8.5 mm. The standard length is 40 mm, but they are 60 mm long. The advantage of this nipple is its prevalence. In the absence of a pump, you can always pump up the wheels at a gas station, tire service, or by agreement with the driver. They are used on hybrid and mountain bikes of the lower and middle level, as well as on bicycles for extreme types of cycling. Also used in rear shocks and bicycle forks.

The expression “reinvent the wheel” in Russian has a negative connotation and means doing unnecessary business that complicates life. The modern bike is a complex high-tech product, its construction contains many details that honor human imagination and engineering talent. The bicycle nipple is a device that began part of automotive history. The first vehicle on rubber wheels was a bicycle.

Replacing the car and sport nipple

Both Schrader and Presta change according to a similar algorithm. carefully remove the old part and install a new one in its place. The difference is that the “shredder” nipple is placed in a rubber band, which in turn is firmly glued to the chamber walls

Therefore, it is very important NOT to damage the rubber grommet. The sports one is pushed by the platform into the hole of the camera and from above is fixed with a lock nut

Nipple replacement diagram (for example Presta): 1. Unscrew the lock nut. An 8 mm threaded head is put on the Schrader thread and forcefully pull the part out of the rubber cover.

2. Cut off the top of the rubber sheath with a small knife.

3. Carefully push the washer into the chamber opening. Push the “Shredder” firmly into the rubber pad.

4. Place the washer from above and secure with the lock nut with maximum force.

5. Now the camera can be installed in the rim and use it further.

How to pump up a bike with a car pump?

Most modern bike models are equipped with a car or “Schrader” nipple, which allows you to directly inflate the camera at regular gas stations.

Algorithm for pumping simple wheels with a car nipple

  • Release the nipple and insert the compressor connection
  • When using a universal pump, the jumper must be installed with its large end outward in the “auto nipple” position.
  • Close the front cover and connect the pump
  • In the process, monitor the pressure you need
  • How to inflate a bicycle wheel with a thin nipple Presta at a gas station
  • First of all, you need to install a special adapter at the output end of the tire.
  • Connect the compressor
  • When using a universal pump, the jumper must be put outward with the thin end
  • Pump several times until the required pressure is reached.

How to pump up your bike wheels: tips from the pros

Driving on flat tires is fraught with many consequences: from deterioration of maneuverability and a decrease in speed dynamics due to an increase in the contact area of ​​the tires with the ground, to puncture and damage to the wheels. In addition, excess pressure promises a deterioration in grip and the risk of a camera breakdown. We will tell you how to inflate the tires of a bicycle, what are the nuances of using a hand pump and whether it is possible to do without Special devices.

How to pump up a bike with a car pump?

Most modern bike models are equipped with a car or “Schrader” nipple, which allows you to directly inflate the camera at regular gas stations.

Algorithm for pumping simple wheels with a car nipple

  • Release the nipple and insert the compressor connection
  • When using a universal pump, the jumper must be installed with its large end outward in the “auto nipple” position.
  • Close the front cover and connect the pump
  • In the process, monitor the pressure you need
  • How to inflate a bicycle wheel with a thin nipple Presta at a gas station
  • First of all, you need to install a special adapter at the output end of the tire.
  • Connect the compressor
  • When using a universal pump, the jumper must be put outward with the thin end
  • Pump several times until the required pressure is reached.
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Electric pumps

12-volt air compressors designed for car tires are also compatible with bicycle tires. The portable car starter battery can be used to power THESE units. Even custom 12-volt homemade electrical circuits, which are primarily made for bicycle lighting, can sometimes be used to power THESE pumps if they have a cigarette lighter socket.

Air 12 Volt Compressor Pumping to 100 PSI Pressure

The main advantage of electric pumps is that the latest models take up less space than hand or foot versions. In fact, there will be plenty of space in the electric pump basket. This makes them suitable for use on well equipped e-bikes.

How to pump up a bicycle wheel with a hand pump: an algorithm of actions

  • Place the wheel with the nipple down
  • While holding the nipple tongue, unscrew the protective cap and release all air
  • Insert the pump outlet into the nipple and unscrew the valve.
  • Put the device vertically and smoothly move the stem, pump air into the chamber

Road bikes and selected hybrid bikes Equipped with wheels with a thin Presta nipple. Such tires require extreme care in handling, as well as a special small volume pump, or an adapter for pumping bicycle wheels.

Inflation process

Every cyclist should know how to use a bicycle pump and be able to apply this knowledge in practice. To cope with this task, you need to perform a number of simple steps:

  • Scroll the wheel until the nipple is NOT at the bottom. This is if the bike is in an upright position. In the event that the transport is lying or the wheel is dismantled, then the location of the nipple does not matter.
  • Unscrew the cap.
  • Deflates the tire while holding the tongue off the nipple.
  • We insert the outlet pipe from the pump, and then turn the valve to the maximum level.
  • The pump is installed in a vertical position.
  • We take the rod, lower and raise it with smooth movements, thus pumping air into the chamber.

Methods of “pumpless” inflation of chambers

Is it possible to pump bicycle tubes without a pump? It is unlikely to reach the recommended pressure, since a regular supply of air under pressure is required, but you can reach the minimum values. Consider several ways to pump the chambers, which can be resorted to without using a pump:

Vacuum cleaner.
Many models are equipped with a blowing mode, when switched to which, air is blown out. A thin hose can be used to connect the wheel nipple. The result directly depends on the tightness of the connection between the hose and the nipple. Here you can use rubber pads, clamps and even rags.

Bottle pump.
You will need two plastic bottles. One of them will serve as a cylinder, the other as a rod. Cut off the bottom of the first bottle and connect its neck through a thin hose to the chamber outlet. Next, insert the second bottle into it and pump air through the cylinder into the hose with progressive movements. For tightness, coat the connection between the neck and the hose with a sealant or lay a rubber strip. You will NOT be able to create high pressure, but you can ride N-th distance on a bicycle.

A schematic representation of a bottle pump: 1. “rod”, 2. cylinder, 3. cylinder neck, 4. hose

The third way is to remove the nipple and inflate like a balloon. The method is fraught with difficulties in removing and installing it in its rightful place. It will be especially difficult to install back, since during this time all the air can be released.

An alternative tire weft is to inflate with a bicycle air fork pump. It will take a long time to work, as this pump is designed for small volumes.

Despite the fact that a resourceful person will find a way out of any situation, it is recommended to have a special pump for inflating tires. Moderately inflated bicycle cameras are a guarantee of comfortable trips without unpleasant surprises in the form of burst cameras or damaged wheels.

How To Pump A Bicycle Tube With A Thin Nipple

Meanwhile, cyclists feel too little or too much pressure. When the wheel is not inflated to the required value, more effort is required when driving. the contact area of ​​the tire with the surface increases. If the wheel is inflated too much, this is also not good, as it can lead to a defect in the camera or its explosion.

Tire pressure is checked with a pressure gauge.
Usually, the pressure that is recommended for your bike or tires is indicated in the technical data sheet of the two-wheeled vehicle, or directly on the tire itself on the side (more often indicated in bars. bar, or pounds per square inch. PSI).

How to pump a bicycle wheel with a hand pump

Pressure control

Bicycle pressure gauge

It is important not only to know how to use a bicycle pump, but also to be able to control changes in air pressure. This can be done in several ways:

  • Using a pressure gauge, tracking the movement of the arrow.
  • If the pressure gauge is connected to the pump, then periodically you will have to disconnect it and insert a measuring device into the nipple.
  • Feel the tires, while assessing its hardness.

The latter option must be performed even when using a pressure gauge. After all, the pressure in the pump during inflation can increase, and air will not enter the chamber at the same time. Accordingly, the readings of the pressure gauge will correspond to reality and the wheel as a result will not be inflated well enough.

Why you need to maintain tire pressure

Tire pressure is the main parameter, which is responsible for the speed of movement, grip on the road and the safety of the cyclist. The average minimum for bicycles is 2 atmospheres. For driving on asphalt, the recommended value is within 3.5 atm., For primers. 2.6. 2.8 atm.

Determining the pressure inside the bicycle chamber is easy and simple using a pressure gauge. separate or built into the pump:

  • Place the bike with the nipple down.
  • Twists off the protective cap.
  • Install a pressure gauge on the nipple tongue or connect the pump tube to it and tighten the valve.
  • The device will show the current value.

Another method: Use your fingers to touch the tire around the entire circumference. If the rubber does NOT flex, then you can ride. It should be noted that this method will give accurate results only for thin slicks on Road Bikes and tires on city bikes.

Consequences of under-inflated tires:

  • Decreased dynamics due to increased contact spot;
  • Power costs to overcome resistance;
  • Decreased bike maneuverability;
  • Punctures;
  • Wheel damage.

On the contrary, excess air in cells threatens the following:

  • Deterioration of road traction;
  • Risk of puncturing the tire;
  • Uncomfortable ride.

Maintaining the recommended pressure will negate all these disadvantages and allow you to get the most out of your travels and enjoyment. Below is a table of values ​​depending on the weight of the cyclist:

Cyclist weight, kgAtmospheres / PSI
502.38. 2.59 / 35. 38
653.1 / 45.5
772.72. 2.9 / 40. 42.6
903.6 / 53
1053.9 / 57.5
1154.1 / 60
1183.2. 3.4 / 47. 50

1 atm = 14.696 Psi

How to determine the pressure level in a bicycle tire

There are several ways to recognize what pressure the tires are and whether there is a need to inflate them. There is an old and well proven method, and it is as follows. We take the tires and squeeze them with our fingers. If the rubber practically does not allow itself to be compressed, then the pressure in it is normal. But this method should be treated carefully. There are people who have remarkable strength, therefore, it will not be difficult for them to hand over the rubber twice, even under pressure. And there are more frail, who are not even able to give up a little almost empty tires.

Manual Bike Tire Pressure Test

The most effective way to check tire pressure is to use a pressure gauge. For this, the number of pump strokes is considered to achieve the desired pressure level. The result is remembered so that in the future, when the pressure gauge is not at hand, you can independently determine the sufficiency of the tire pressure.

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Determining the tire pressure of a bicycle using a pressure gauge

It is necessary to understand that it is precisely such an indicator as tire pressure that affects the travel speed, the quality of grip and, as a result, your safety. It is generally accepted that the average pressure for all bicycles is 2 atmospheres. But if your path constantly passes on an asphalt surface, then it can be equal to 3.5 atmospheres. If you are traveling on a dirt road or in the fields, then the pressure should be on average 2.7 atmospheres.

To determine the pressure indicator using a pressure gauge built into the pump or an individual one, the following steps must be taken:

  • Place the bike so that the nipple points down;
  • Unscrew the protective cap;
  • Install a pressure gauge to the nipple tongue or connect a pumping tube to it and clamp the valve;
  • The device will display the current tire pressure value.

What can happen due to the fact that the tire pressure will be more or less than the norm:

To avoid negative consequences, it is worth constantly monitoring the tire pressure. There are optimal pressure indicators, which will allow you to travel on bicycles with greater comfort and health benefits. These data are given in the table:

How to pump up a camera with a Dunlop nipple

Bicycle tires with Dunlop tubes often create problems for their owners when inflating, due to the lack of suitable pumps. Suggested Article Examines Dunlop Nipple designs and how to pump bicycle tire chambers through them using bicycle and car pumps.

Main characteristics of Dunlop.nipple

This device is known by the following names:

  • DV. Dunlop valve (named after its first inventor JohnBoydDunlop)
  • NV. Normal valve;
  • Bicycle valve;
  • Blitz valve;
  • Alligator valve;
  • Wood (Wood) valve (named after inventor C.H. Woods)
  • German valve;
  • English valve;
  • Dutch valve.

Main technical characteristics of the valve:

  • Wheel rim hole ø 8.5 mm;
  • Thread according to DIN 7756, external VG 8 × 32;
  • Maximum pressure 6 bar.

Dunlop nipple is most common in Germany, Austria and the Netherlands. It is used mainly in city and touring bicycles, and until the 1980s this type of valve dominated almost all types of bicycles, including Soviet-made models. It is named after its inventor John Boyd Dunlop, the founder of the tire company of the same name.

It is characteristic that the movable part of the valve is inserted into a fixed tube and secured therein with a union nut. It can be removed quickly and without tools for replacement, but it can also easily be stolen. The union nut must be loosened to release the air.

What bike pumps are needed to pump Dunlop cameras?

Suitable air pumps and pressure gauges are available for the different types of tire chamber valves. Many air pumps are suitable for several types of valves. The picture below shows such a universal hoseless bicycle pump with two air outlets, suitable for all three types of nipple. As you can see, the pump outlet, located in the figure on the right, goes simultaneously to the Dunlop and Presta-nipple. Thus, the external threads on their bodies are identical. Therefore, the Presta nipple pump can always be used to inflate bicycle tire chambers with a Dunlop nipple.

There are also universal hose bicycle pumps for two main modern nipples. Presta and Schrader. The hose of such a pump is shown in the photo below. Moreover, all modern hoseless single air outlet pumps are available with the ability to pump chambers with both types of nipples: Presta and Schrader. It’s just that this possibility is NOT indicated by a visual marking on the pump, and then is NOT known to everyone. Under the union nut of such a bicycle pump there is a rubber sealing cylinder with holes of different diameters on both sides, under which there is a sleeve with two limit switches. thin and wide.

To inflate chambers with a Presta or Dunlop nipple, insert the sleeve into the pump head with the thin tip down, and place the rubber cylinder with the large hole down. Next, tighten the union nut and the pump is ready to pump up the chambers with the Presta and Dunlop nipple

The only thing to remember when pumping a universal camera bicycle pump with a Dunlop nipple is the need to first remove the union nut, which simply will not allow the pump head to slide onto the camera valve body. In addition, we must not forget that the physical efforts when inflating a bicycle tube with a Dunlop-nipple are obviously greater than on cameras with other types of valves.

Valve design

In the original version, the Dunlop nipple had a blind floor cylindrical tip with an opening on the side for air inlet from the pump. A short rubber tube (nipple) was pulled over the tip, which closed the inlet under the pressure in the wheel chamber, plus the tube’s own tension.

When inflating, the pressure in the chamber, plus the tension on the rubber tube, is overcome by the air pressure from the pump, the tube expands and releases the inlet so that air can enter the chamber (see Fig. Below).

In this process, energy is spent not only on compressing the air to the pressure in the tires, but also on overcoming the tension of the rubber tube. Therefore, the resistance to air flow is significant, the air in the pump heats up noticeably during compression, and the consumption of muscle power in Dunlop valves is much higher than in other types.
The improved design is a plastic or metal ball or cylinder valve with an O-ring seal (see Figure below). This allows air to be pumped with significantly less effort. This version of the device is called in different manufacturers “automatic”, “patented”, “blitz” or “alligator valve”. The terms “Dunlop” and “Blitz Valve” are used synonymously today. Both types are common, with rubber tube check valve prevailing in the low-cost segment.

Since this valve cannot be opened without inflating or bleeding the air pressure, the tire pressure can only be measured at the pump or calculated approximately. An air pump with a built-in pressure gauge shows the pressure only while air is being pumped into the tire and thus the pressures in the pump and the tire are briefly equal.

Existing types of pneumatic valves for bicycle tires

There are three main types of such valves: Dunlop, Presta and Shrader. Their names differ slightly depending on the manufacturer, therefore, several names are often given on the packages. The prevalence of each type varies by country, manufacturer, and bike type and age.

The movable part of the valve is located in a tube fastened to the bicycle tire tube, passed through a hole in the wheel rim, the length of which must be the same for this type. Typical tubing lengths are about 25 mm (for simple steel wheels and only for Dunlop valves) and 32 mm (for aluminum disc wheels and usually for Presta or Schrader valves).

In everyday life (exclusively domestic!) The name of any bicycle pneumatic valve by the term “nipple” has taken root. In general, in technology, a nipple is a pipe that tightly connects two pipelines, or goes from a pipeline to a fitting. Since the valve body of the bicycle tire is really a tube with an external thread, the name “nipple” for this device is quite justified.

Pump-nipple adapters

Inflating a bicycle tube with a Dunlop nipple using a hand pump or an autocompressor designed for chambers with a so-called “car nipple” of the Schrader type is a certain difficulty. This service is often in demand by cyclists when driving on roads (highways), along which there are auto repair shops equipped with compressors.