1. Why should the outlet valve be closed when the centrifugal pump is started?   When the centrifugal water pump is started, there is still no water in the outlet pipe of the pump, so there is no pipe resistance and resistance to lifting height. Af...

1.Why do you need to start the centrifugal pump Close the outlet valve? When the centrifugal pump is started, there is no water in the outlet pipe of the pump, so there is no pipeline resistance and lifting height resistance. After the centrifugal ...

"Know yourself and the enemy, never end in battle" The prerequisite for the correct selection and use of valves is a comprehensive and specific understanding of the advantages and disadvantages of each valve and the physical properties (temperature,...

Analysis of 5 valves Pros and cons   "Know yourselves and know each other, you can't fight forever" The premise of correct selection and use of valves is a comprehensive and specific understanding of the advantages and disadvantages of each valve it...

Wafer butterfly valve is one of the most common types of valves in industrial pipelines. The wafer butterfly valve itself has a relatively small structure. You only need to put the butterfly valve in the middle of the flanges at both ends of the pipe...

Wafer type butterfly valve is one of the most common types of valves in industrial pipelines. Wafer type butterfly valve itself has a relatively small structure. Simply place the butterfly valve in the middle of the flange at both ends of the pipelin...

  □ Implement the national "health code" mutual recognition of foreign personnel, and all implement "red code" control and "green code" release.   □ Completely cancel the negative list for resumption of work and production and the "filing system + n...

2020.03.27 March 4th Friday Full recovery Production and living order To implement the national "health code" mutual recognition of foreigners, the "red code" control and "green code" will be implemented.   Completely cancel the negative list for res...

A sudden epidemic, Affects the heart of each of us, Various suspensions... but! Dreams can't stop! Dreams are not extinguished, recruitment is not only, Kaixin Online Recruitment was officially launched, Let you get your favorite offer at home! about...

A sudden outbreak,Touching the hearts of each of us,Various suspensions and suspensions ...but! Dreams can't stop!Dreams do not go out, recruitment continues,Kaixin Online Recruitment officially started,Let you get your favorite offer at home! JOIN U...

Safe and orderly resumption of work and production  In strict accordance with the "Guidelines for the Prevention and Control of the Epidemic Prevention and Control of Enterprises Resuming Work" in Beilun District, our company has actively implemented...

In spring and March, the virus became known as if it were cold winter, and gradually went to the city to return to the past. In strict accordance with Beilun District's "Guidelines for the Prevention and Control of Enterprise Reinstatement Epidemic...