Introduction of Soda Ash Special Check Valve

Soda Special Purpose Non-return Valve Instruction Manual I. Overview Soda ash special check valve is beautiful in appearance and reasonable in structure design. The valve of the check valve is opened under the action of fluid pressure, and the medium is from the inlet side. When the pressure on the inlet side is lower than the pressure on the outlet side, the valve flap closes in response to factors such as the reset torsion spring, fluid pressure difference, and gravity itself to prevent back flow of the medium.
Second, use Soda ash special check valve is suitable for nominal pressure PN1.0 ~ 4.0MPa, nominal diameter DN50 ~ 1200mm (NPS2 ~ 48), working 196 ~ 540 °C in a variety of pipelines to prevent the back flow of media. By using different valve materials, it can be applied to carbon dioxide, MI, MI
AII, semi-II, nitric acid, acetic acid, strong oxidizing medium and urea and other special media.
Tip: When used in carbon dioxide media, the carbon dioxide temperature control should not be too high, because the dust in the carbon dioxide gas can easily enter the gap, causing the valve flap stuck. According to the long-term use experience of the soda industry, it is recommended that the carbon dioxide temperature be controlled at 80~100°C, because the carbon control temperature is too high, which can easily lead to screw compressor failure.
Third, the structure characteristics Short structure length, its structure length is only 1/4~1/8 of the traditional flange type check valve;
2. Small size, light weight, and its weight is only 1/4~1/20 of the traditional flanged check valve;
3. The valve flap closes faster and more sensitive under the action of the torsion spring, and the water hammer pressure is small;
4. Horizontal pipe or vertical pipe can be used, easy installation;
5. The flow channel is smooth and the fluid resistance is small;
6. Valve orifices and valve shafts are designed with a reasonable transitional clearance to increase the sensitivity and tightness of the flaps when opening and closing.
7. Rotary valve flap rotation, close the impact of small;
8. The overall structure is simple and compact, and beautiful in appearance;
9. With plugging device, the dust in the valve cavity (crystallization, scab, scaling) can be periodically purged with high pressure steam;
10. Long service life and high reliability.
Four: Common accidents and elimination methods:
Leakage at joints: Cause The nuts of the connecting bolts are not tight or the elastic uneven gaskets are damaged. Eliminate the method to evenly tighten the bolts, remove the dirt, and replace the gasket.
Seal Leakage: Causes dust accumulation, crystallization, crusting, and scaling on the sealing surface. Elimination method Connecting the plugging device, the valve sealing surface can be periodically subjected to high-pressure steam purging