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Use: apply double seal valve guide: aviation kerosene, crude oil, light oil, natural gas, LPG, gas pipelines, chemical piping and other medium, as a cutoff means over the medium. Characteristics: ①during switching valve, slide valve sealing surface and the sealing surface without any contact, and therefore, long life sealing surface without friction, wear, valves, small torque switch; ② valve repair, without the remove the valve from the pipeline, the bottom cover only the valve open, one pair of slide can be exchanged, maintenance is very convenient; ③ valve plug and full bore, no medium flow resistance through the valve, and may pass balls of pipe cleaning, overcomes the disadvantages of the reduced diameter valve; ④ body cavity is plated with hard chromium, hard and smooth sealing region; ⑤ slide on the elastic seal fluorine rubber, and the molding surface of the slide groove. ⑥ valve with automatic bleed device (optional), after the valve is completely closed, to prevent the valve chamber abnormal pressure and check the valve effect; ⑦ valve switch instructions Device and switch position synchronization, can accurately display the valve switch state.
Commonly used distance measurement methods include tape measure distance and photoelectric distance measurement. The measuring distance of a tape measure is measured along the ground using a tape-like ruler that can be rolled up, which is a direct measuring distance. Photoelectric ranging is to use an instrument to transmit and receive modulated light waves between two points, and measure the distance according to its propagation speed and time. It belongs to electronic physical ranging. Photoelectric ranging is indirect ranging.
Inch Tape Measure,Tape Ruler Measurements,Length Tape Measure,1 Inch In Tape Measure
Yucheng tengxu Measuring Tool Co., Ltd , https://www.hardwaretoolstape.com