WEFOUNDGlobe Manual for Use With Stand and Suspension Globes (Classic Reprint)


Many different types of manual valves are used in industrial applications worldwide. The following article will cover the general mechanism and function of the most typical of these valves used in steam systems, such as ball valves , butterfly valves , globe valves , gate valves , and diaphragm valves .

Ball valves offer very good shut-off capabilities. A simple quarter-turn (90°) completely opens or closes the valve. This characteristic minimizes valve operation time and decreases the likelihood of leakage due to wear from the gland seal.

Ball valves can be divided into two categories: reduced bore and full bore. In reduced bore valves, the valve opening is smaller than the diameter of the piping; in full bore valves, the valve opening is the same size as the diameter of the piping. Full bore ball valves are often valued because they minimize the pressure drop across the valve.

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Atmospheric conditions can have an important impact on the types of plants and animals that can live in a particular area as well as soil formation. The atmospheric measurements collected by GLOBE students are important to scientists studying weather, climate, land cover, phenology, ecology, biology, hydrology, and soil.

The Biosphere is divided into natural and developed areas. Developed areas include urban and commercial areas, agricultural areas, and transportation. Natural areas include many different natural habitats: deserts, forests, water bodies and the like. All living things––including humans––depend on their habitat or land cover­­ for survival. Land cover provides shelter, food, and protection. Land cover also has a direct effect on the kinds of animals that will likely inhabit an area.

Water participates in many important natural chemical reactions and is a good solvent. Changing any part of the Earth system, such as the amount or type of vegetation in a region or from natural land cover to an impervious one, can affect the rest of the system. Rain and snow capture aerosols from the air. Acidic water slowly dissolves rocks, placing dissolved solids in water. Dissolved or suspended impurities determine water's chemical composition. Current measurement programs in many areas of the world cover only a few water bodies a few times during the year. GLOBE students provide valuable data to help fill these gaps and improve our understanding of Earth's natural waters.

Netherlands university students collaborated with Dr. Russchenberg, Professor of Atmospheric Remote Sensing at Delft University of Technology, on aerosols research. Read about the project here.

The GLOBE Implementation Office is excited to announce that registration for the 2018 GLOBE Learning Expedition (GLE) and the 22nd Annual Meeting in Ireland is now open! Takes place 1 - 6 July 2018!

The Global Learning and Observations to Benefit the Environment (GLOBE) Program is an international science and education program that provides students and  the public worldwide with the opportunity to participate in data collection and the scientific process, and contribute meaningfully to our understanding of the Earth system and global environment.  

Many different types of manual valves are used in industrial applications worldwide. The following article will cover the general mechanism and function of the most typical of these valves used in steam systems, such as ball valves , butterfly valves , globe valves , gate valves , and diaphragm valves .

Ball valves offer very good shut-off capabilities. A simple quarter-turn (90°) completely opens or closes the valve. This characteristic minimizes valve operation time and decreases the likelihood of leakage due to wear from the gland seal.

Ball valves can be divided into two categories: reduced bore and full bore. In reduced bore valves, the valve opening is smaller than the diameter of the piping; in full bore valves, the valve opening is the same size as the diameter of the piping. Full bore ball valves are often valued because they minimize the pressure drop across the valve.

You're currently on {{currently_on}}. However, it looks like you listened to {{listened_to}} on {{device_name}} {{time}}.

Many different types of manual valves are used in industrial applications worldwide. The following article will cover the general mechanism and function of the most typical of these valves used in steam systems, such as ball valves , butterfly valves , globe valves , gate valves , and diaphragm valves .

Ball valves offer very good shut-off capabilities. A simple quarter-turn (90°) completely opens or closes the valve. This characteristic minimizes valve operation time and decreases the likelihood of leakage due to wear from the gland seal.

Ball valves can be divided into two categories: reduced bore and full bore. In reduced bore valves, the valve opening is smaller than the diameter of the piping; in full bore valves, the valve opening is the same size as the diameter of the piping. Full bore ball valves are often valued because they minimize the pressure drop across the valve.

You're currently on {{currently_on}}. However, it looks like you listened to {{listened_to}} on {{device_name}} {{time}}.

Atmospheric conditions can have an important impact on the types of plants and animals that can live in a particular area as well as soil formation. The atmospheric measurements collected by GLOBE students are important to scientists studying weather, climate, land cover, phenology, ecology, biology, hydrology, and soil.

The Biosphere is divided into natural and developed areas. Developed areas include urban and commercial areas, agricultural areas, and transportation. Natural areas include many different natural habitats: deserts, forests, water bodies and the like. All living things––including humans––depend on their habitat or land cover­­ for survival. Land cover provides shelter, food, and protection. Land cover also has a direct effect on the kinds of animals that will likely inhabit an area.

Water participates in many important natural chemical reactions and is a good solvent. Changing any part of the Earth system, such as the amount or type of vegetation in a region or from natural land cover to an impervious one, can affect the rest of the system. Rain and snow capture aerosols from the air. Acidic water slowly dissolves rocks, placing dissolved solids in water. Dissolved or suspended impurities determine water's chemical composition. Current measurement programs in many areas of the world cover only a few water bodies a few times during the year. GLOBE students provide valuable data to help fill these gaps and improve our understanding of Earth's natural waters.

Many different types of manual valves are used in industrial applications worldwide. The following article will cover the general mechanism and function of the most typical of these valves used in steam systems, such as ball valves , butterfly valves , globe valves , gate valves , and diaphragm valves .

Ball valves offer very good shut-off capabilities. A simple quarter-turn (90°) completely opens or closes the valve. This characteristic minimizes valve operation time and decreases the likelihood of leakage due to wear from the gland seal.

Ball valves can be divided into two categories: reduced bore and full bore. In reduced bore valves, the valve opening is smaller than the diameter of the piping; in full bore valves, the valve opening is the same size as the diameter of the piping. Full bore ball valves are often valued because they minimize the pressure drop across the valve.


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