3 great things you need to know about valves

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3 great things you need to know about valves


History of valves

Over the past decades, valves have played an important role in many of the calendar historic events and their inventions have changed our daily lives.

Although the valve was invented in 1904, it was not widely used until 1910. It began to flourish since 1910, and it played a pivotal role in laying the groundwork for what we now call electronic technology.

When the valve is used extensively in machines, it increases the efficiency of the work. Therefore, it contributes to saving labor time, increasing the productivity of the product. The deeper understanding of the physics behind the way valves work, makes it easy for technicians to adjust. Allows the valve to operate at a higher level of performance. This is a great achievement for the electronics industry at the time.

Values right from the appearance is very expensive, so it is only used in very small quantities. But due to demand, the number of valves used has increased. Typically, RCA’s sales have sold about 1.25 million valves in 1922, but by 1924 it sold 11.35 million. That said, valves were really needed in the electronics industry at the time. Even now it still plays an important role in most types of electronics.

A few new innovative studies appear to increase the demand for valves such as:

Ultrasound stations require the use of more valves than are used for similar radio frequency receivers.

The peak of valve use is due to the outbreak of World War II.

Why is that?

Because of the need to use radios for transmissions, radar sets, electronic warfare equipment, telecommunication repeaters and many other devices. Therefore, the demand for valves has been increasing.

During this time, valves were produced in large quantities to supply all the water needed in the world.

After the Second World War, the new requirement for the valve was the miniature valve. Valves in the early stages are too big and it is really outdated. They need a smaller, more convenient valve. And then, smaller valves were born

However, with the invention of the transistor in 1949 it gained more advantages.


  • Smaller transistors
  • More reliable
  • Consume less energy

Although, initially, the price of the transistor was more expensive than the valve but then it dropped. And many say it is cheaper than the valve.

Accordingly, valve history shows that the use of valves has declined sharply in the 1960s and until the 1970s the valve was used very little.

Highlights of the valve technology:

Van was born, marking a new development of human beings. A new technology industry: electronic technology. They play an important role in the radio, other electronic fields.

Important milestones of the valve:

The historical period of the valve is used in great inventions:

#1. In 1640, Otto von Guericke produces air pumps that can create a partial vacuum. A vacuum was required for the valve’s operation.

#2. In 1860, Joseph Swan patented carbon fiber lamp.

#3. In 1879, Thomas Edison offers a US patent for a carbon-based vacuum tube vacuum.

#4. In 1883, Thomas Edison observed the emission of heat in a vacuum.

#5. In 1885, Sir William Preece recreated the Edison effect and made measurements, presenting an article to the Royal Society.

#6. In 1897, Guglielmo Marconi established the Wireless Telegraph and Wireless Company to exploit wireless or radio technology.

#7. In 1901, Marconi made the first transatlantic radio transmission but encountered difficulties detecting the signal.

#8. In 1904, Ambrose Fleming fixes the wireless signal using his control valve – this is the first Edison effect ever used. It is a simple valve and is sometimes called the Fleming Diode.

#9. In 1904, On November 16, 1904 Ambrose Fleming applied for his patent.

#10. In 1906, After much experimentation, Lee de Forest in the United States added a third electrode to Fleming’s diode to create what he called Audion. This device is still only used to fix.

#11. In 1915, In France, the first vacuum triode was made. It was called the Type TM and during World War II over 100,000 units were produced.

#12. In 1916, The equivalent of the Type TM valve starts production – it is known as the R-Type valve.

#13. In 1920, Capt. SR Mullard formed Van Mullard Radio Valve Ltd. This is a manufacturer of valves and transistors.

#14. In 1920, Tungsten filament thread for valve / vacuum tube developed by Irving Langmuir.

#15. In 1927, First valve with screen mesh started production – S625.

#16. In 1939, The B7G valve base is introduced in the US for use with all glass vacuum tubes.

History of valve history shows many improvements and developments are made according to the basic concept. Over the years, the performance of this technology has gone beyond recognition. Many different people have played their part in the history of van.

Today, many different valves are born, replacing old valves suitable for many different types of machinery. For example:

Check Valves:

Check valves limit fluid flow in one direction. The check valve is manufactured and tested for operating pressure from 100psi to 30000psi with the most common supply pressure at 3000, 5000 and 10000 psi.

Reduced valve:

Hybrid hydraulic pressure reducers with pressure set from 80 psi to 22,500 psi, in different alloys of stainless steel.

Reduced valve

Shuttle Valves:

The basic structure of the drive valve is similar to a three-hole hose; a hole in each end and a hole in the middle. Shuttle Valves working pressure up to 5000psi.

SPM Valves:

SPM valve are three-way high-pressure, two-position, high-pressure control valves. SPM is acronym for Sub-Plate Mounted and this valve is installed in single or multiple blocks of dividers.

The SPM valve has a working pressure of up to 10000 psi in piston sizes from 1/2 to 2 with both hydraulic and pneumatic actuation pilot.

Directional control valve:

Directional control valves are one of the most basic components in hydraulic machinery. They allow the flow of liquids into different paths from one or more sources. Directional control valves are manufactured with a working pressure of 5000 and 10000 psi.

Solenoid Valve:

Solenoid valves are electric valve for use with liquids or gases. Naman Tech provides 24VDC solenoid valves that take advantage of hydrostatic loading to ensure reliable operation in contaminated liquids and up to 5000psi.

That’s the basic information about valves that we collect through our knowledge. Hope to get you knowledgeable. If you need help please contact us for best service. Email: info@naman-tech.vn