Soda ash is special check pneumatic valve (2)

soda ash dedicated check pneumatic valve using a special check pneumatic valve, the general situation of soda ash specification beautiful shape, reasonable structure design, check the pneumatic valve pneumatic valve under the effect of fluid pressure open, medium from inlet to outlet side. When inlet side pressure is lower than the export side, pneumatic disc in the reset torsion spring, fluid pressure differential and itself gravity factors such as actuation is shut, to prevent the backflow medium. 2, check for use soda ash pneumatic valve is suitable for the nominal pressure PN. ~。 MPa, nominal diameter DN - mm ( NPS ~, work ~ ℃ of prevent the backflow medium on the pipeline. By choosing different pneumatic valve materials, can be applied to carbon dioxide, MI, MI AII, half II, nitric acid, acetic acid, strong oxidizing medium and urea, and other special media. Tip: when used for medium carbon dioxide, carbon dioxide can't too high temperature control, because the carbon dioxide gas of dust into the gap easily, causing pneumatic disc. According to the long-term use of soda ash industry experience, it is recommended that the temperature control in carbon dioxide ~ ℃ advisable, because carbon control temperature is too high, easy to cause the screw compressor failure. Structure length is short, the length of the structure only traditional pneumatic valve flange check / ~ /; Small volume, light weight, the weight only traditional pneumatic valve flange check / ~ /; Pneumatic valve under the action of reset torsion spring close more rapid, sensitive, water hammer pressure is small; Horizontal line or vertical line can be used, easy installation; Flow channel unobstructed, fluid resistance small; Pneumatic valve holes and pneumatic valve shaft when the design a reasonable transition rotating clearance, increases the opening and closing of pneumatic disc sensitivity and sealing; Pneumatic disc quarter-turn swing, shut off the impact of small; Simple and compact structure, beautiful appearance; The blow plugging device, pneumatic valve lumen dust ( Crystallization, scarring, scaling) Can regularly with high-pressure steam purging; Long service life and high reliability. Four: common accidents and eliminating methods: joint leakage: reasons of connecting bolt nut is not tight or not elastic uneven gasket is damaged, eliminating method uniformly tighten bolts, remove dirt, replace the gasket. Sealing leak: why sealing surface dust, crystallization, scarring, scaling, eliminating method connection blocking device, pneumatic valve sealing surface on a regular basis to high pressure steam purging.