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What is the difference between static balancing and dynamic balancing?

Dynamic balancing valve is divided into two kinds: flow (flow dynamic control valve) and pressure difference (self-operated pressure difference control valve), which are selected according to actual demand. Dynamic balancing valve is used to solve the branch differential pressure balance problem caused by the frequent operation of temperature control valves at each end. The difference between static and static is that the static balance valve (also known as digital lock balance valve) needs to be locked after one-time debugging by a special intelligent instrument to control the total water volume of the system within a reasonable range, but every change needs to be re-locked by the instrument. The dynamic self-reliance is not so troublesome, depending on the pipe. The pressure change of the adjusted medium in the network can automatically keep a constant flow rate, which is a little cheaper in the static engineering cost.

Principle of dynamic balancing valve: By changing the flow area of the spool of the balancing valve to adapt to the changes before and after the valve, so as to achieve the purpose of flow control.

Dynamic balancing valve can be installed on a water supply pipe or the return pipe. When the working pressure of the system fluid exceeds the allowable working pressure of the radiator, the dynamic balancing valve should be installed on the water supply pipe for safety.

Static balancing valves, also known as balancing valves, manual balancing valves, digital lock balancing valves, double-position regulating valves, are used to solve the problem of branch pressure differential balance in pipeline design.

The working principle of the static balance valve is to change the flow resistance through the valve by changing the clearance (opening) between the valve core and the seat in order to achieve the purpose of regulating the flow. Its object of the action is the resistance of the system, which can distribute the new water according to the proportion calculated by the design. Each branch increases or decreases in proportion at the same time, and still satisfies the requirements. The flow demand of partial load under pre-climate needs plays a role of heat balance.

Static balancing valve can be installed on a water supply pipe or the return pipe. Generally, it should be installed on the return pipe. Especially for high-temperature loop, in order to facilitate debugging, it should be installed on the return pipe. The supply (return) pipe with a balance valve does not need to install the stop valve.

Whether static balancing valve or dynamic balancing valve, they are impedance components, especially dynamic balancing valve, which requires the system to consider the additional head caused by the balancing valve when selecting and distributing pumps.

Zhengfeng is one of the most professional check valve manufacturers china . And we sincerely invite and welcome people from all around the world to invest and create more values together.

There is the the Difference between Rubber Mat and PVC Coil Mat.

1. Composition and production technology are different: rubber mat is divided into homogeneous and heterogeneous. Homogeneous rubber floor refers to the floor vulcanized by a single or multi-layer structure based on natural rubber or synthetic rubber. Heterogeneous rubber floor refers to floor mat based on natural rubber or synthetic rubber. The PVC coil mat is a carpet made of polyvinyl chloride resin. It uses polyvinyl chloride and its copolymer resin as the main raw material to make, adding filler, plasticizer, stabilizer, colorant, and other accessories. It is made based on the flaky connected base material by uniform mixing, coating or pressing and kneading technology. It can replace pure wool carpet and chemical fiber carpet.

2. The trick is different: As the strong color absorption of rubber, most of the rubber floor mats have a single color; while the PVC coil mats have bright colors, rich drawings, and strong decoration. Especially it is most widely used in decoration.

3. Installation difficulty is different: PVC coil mat is lighter in texture, convenient and fast in the installation; rubber cushion is heavy and hard to install.

4. Market demand and wear resistance are different: rubber flooring is only used in some high-end occasions, and the scale is small; while PVC flooring is widely used because of its super high-cost-performance ratio, and the infinite market potential.

If you want to know more about the mat and rug difference, just contact us!

Recently, the "One Belt And One Road" trade cooperation big data report 2018 "was released, which mainly reflects the trade data between countries, the status quo and trend forecast of" One Belt And One Road "trade cooperation, and shows the latest characteristics and trends of China and" One Belt And One Road "regional cooperation, trade commodity structure and other aspects. As a key time node for the 40th anniversary of reform and opening up and the fifth anniversary of the "One Belt And One Road" initiative.

According to the import export trade data between China and the "One Belt And One Road" countries in 2018, in terms of the proportion of China's regional trade volume, the total import and export volume between the eastern region and the "One Belt And One Road" countries in 2017 was 1,149.41 billion us dollars, accounting for 79.8%, ranking first. The western region, central region and northeast region accounted for 10.0%, 6.0% and 4.3% respectively.

From the perspective of export, the eastern region's export to "One Belt And One Road" countries is 622.49 billion us dollars, accounting for 80.4% of China's export from "One Belt And One Road" countries. The following regions were the western region, the central region and the northeast region, accounting for 8.9 percent, 7.5 percent and 3.2 percent, respectively.

In terms of imports, in 2017, imports from "One Belt And One Road" countries in the eastern region amounted to $529.62 billion, accounting for 79.1% of China's imports from "One Belt And One Road" countries, followed by western, eastern and central regions, accounting for 11.2%, 5.5% and 4.1% respectively.