Valves are used in many fields, and with the development of industry, the variety of valves has become more and more. There are two general types of Valves: The first type of automatic valve: This valve relies on the ability of the medium (liquid, gas) itself to automatically control the opening and closing of the …
10
Dec
Dec
Solenoid Valve is the most used one of the automatic valves, because it is efficient, easy to use, and the price is also relatively low. Solenoid valve consists of coil and core, coil power or power off to control the operation of the core, thus changing the direction of the fluid. Solenoid valve components are …
06
Dec
Dec
With a heart of learning, the Belt and Road COVNA business mission went to Japan to visit 100-year-old enterprises and see how real craftsmen create the spirit of craftsmanship! TOYOTA Japan Toyota is one of the world’s top ten automotive industry companies, Japan’s largest auto company, founded in 1933. Toyota overtook General Motors in 2008 …
05
Dec
Dec
November 28th is the Thanksgiving Day, COVNA Group went to t Hechi City Guangxi to carry out the Hope Primary School charity event. Because of located in the cold and impoverished mountain areas, the transportation and economy are relatively backward, and education resources are scarce, so most children cannot receive a good education. To completely …
25
Sep
Sep
On September 19, 2019, the South China Technical Summit on Promoting Environmental Protection Products & COVNA 13th Salon Investment Conference was held at the 5th China Environmental Expo Guangzhou Exhibition. More than 100 business representatives and experts from the environmental protection fields gathered together. The theme of this summit is “sharing and win-win”. The idea …
30
Jul
Jul
On 27th July, 2019, COVNA 19th Anniversary & New Factory Inauguration were successfully held. COVNA is a worldwide automatic valves manufacturer with its products sold to more than 100 countries around the world, and has built a strong relationship with many clients from different industries. In this special day, clients from many countries sent their …
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Jun
Jun
How does double acting pneumatic actuator work
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Jun
Jun
How does spring return pneumatic actuator work
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Jun
Jun
More and more frequently, architectural fountains and interactive play fountains are designed in such a way that their regular operating mode includes changing water displays, which may or may not follow musical sequences, accompany image projections, etc. There are fewer and fewer static water fountains in which the pump unit works at full capacity from …
05
Jun
Jun
AC powered motors have “Duty Cycle” limitations.