Valve stability is poor and how to solve the oscillation

(1) to change the direction of the unbalanced force Ft is usually used to change the flow direction of the method to change the direction of FI. Such as the dg ≥ 20mm through the single-seat valve from the flow closed to open type, can be easily solved the stability of the valve. (2) to avoid

Alcoa's 2013Q4 Loss of U.S. Financial Reports

Alcoa announced its financial report on January 9, 2014 that the company posted a net loss of US$2.3 billion in the fourth quarter of 2013, a loss of US$2.19 per share, which was less than the net profit of US$257 million in the same period of the previous year. Excluding certain one-time it

Sprinkler short name and use

Sprinklers are also known as spray trucks, multi-function sprinklers , landscaping sprinklers , water tankers, and water trucks . Our company's sprinkler trucks are suitable for all kinds of road flushing, trees, green belts, lawn greening, construction