Knowledge Hall: regulating valve medium flow and pressure level

Control valve is used to adjust the medium flow, pressure and level. According to adjust the position of the signal, the valve automatically control the opening, so as to achieve the media flow, pressure and liquid level adjustment. Regulating valve sub-electric control valve, pneumatic control.......

air filter

Shanghai Yuyi Purifying Equipment Manufacturing Co., Ltd. was founded in April 2001. The "hefil" brand is well-known at home and abroad! We are dedicated to the R&D, manufact.......

Analysis of Accuracy of Measuring Hyperboloid Gear by Coordinate Method

1 Tooth surface machining and tooth profile deviation of the hypoid gear Since the gear is a rotating part, the influence of the single tooth on the meshing performance of the gear is regarded as the tooth shape, and then the installation position is considered. When analyzing the design instal.......

Battery power test method

To check if the power of ordinary zinc-manganese dry batteries is sufficient, there are usually two methods.

The first method is to estimate the internal resistance of the battery by measuring the instantaneous short-circuit current of the battery, and then determine whether the battery is .......