ZTA damping pneumatic butterfly valve seat spring damper mechanical equipment pneumatic butterfly valve
ZTA type damping spring pneumatic butterfly valve detailed introduction:
1. The damper spring pneumatic butterfly valve (damper spring shock absorber) spring is designed with the bottom natural frequency value, and is subject to anti-corrosion and paint baking treatment; Good weather resistance; High anti vibration effect.
2. The shell shall be treated by hot-dip galvanizing process.
3. Anti slip and anti roll bolt design at the bottom, high safety.
4. The device is simple and the height and degree can be adjusted according to practical needs.
5. It can eliminate vibration of mechanical structure, maintain and extend mechanical life.
6. Load deflection: 25mm, 40mm, 50mm, 75mm, 100mm, 125mm.

Skills to identify the quality of stainless steel vacuum tubes
To identify the quality of stainless steel vacuum tubes, first look at the appearance. Stainless steel vacuum tubes should meet the following requirements:
1. The surface is smooth and clean, and the pipe body is free of spots, air lines, scratches and film scratches.
2. The baking mirror is in good condition, bright and transparent, without blackening and blackening.
3. The film color is mainly blue and black, and the overall color difference is small. However, the black color does not indicate that the stainless steel vacuum tube is of good quality. Some manufacturers often make the film pure black to cover up the normal color. Theoretically, the color error of stainless steel vacuum tubes is inevitable, which does not affect the heat collection efficiency of stainless steel vacuum tubes.
4. At present, there are two kinds of stainless steel vacuum tubes on the market: high-temperature tubes and cryogenic tubes. The film layer of the high-temperature tube is longer than that of the ordinary tube (about 1cm from the nozzle). This tube has high temperature resistance and strong anti-aging property. The film layer does not age, fall apart or change color when exposed to air at 400 ℃. The cold pipe has the advantages of high heat efficiency and fast temperature rise, and at the same time, it has less heat loss, and it can still produce hot water at - 30 ℃. Consumers can choose different stainless steel vacuum tubes according to different areas.
5. With the naked eye, the color of the inner tube is dark red, indicating that its metal bottom is copper. This stainless steel vacuum tube can also work normally in severe cold conditions, and hot water can still be produced at - 30 ℃. The stainless steel vacuum tube is generally used for more than 15 years, which is directly related to the life of the solar water heater.