Discharge valve display up and down the difference lies in: the exhibition for the ball to go up the ball out of the material, the next valve for the ball to drop in order to discharge. Seal with erosion-resistant, corrosion-resistant material, and the special treatment of the ring, the hardness of the surface HRC56-62, to ensure that the valve is open, the cavity is not damaged by debris and corrosive fluids, with high wear resistance Corrosion of the function, the special conditions of the valve seal can be welded into a hard alloy, sealing the use of line sealing, which can effectively ensure the reliability of the valve, to prevent scarring, corrosion and so on.
Discharge valve structure performance:
San Jing licensing discharge valve structure is simple, easy to operate, open the freedom, flexible and reliable movement, valve and seal replacement is simple and convenient. The discharge valve is mainly composed of a valve body, a valve disc, a seal ring, a valve stem, a bracket, a valve gland, a hand wheel, a flange, a nut, and a set screw. The discharge valve in the chemical industry, petroleum, metallurgy, pharmaceuticals, pesticides, dyes, food processing and other industries have been widely used.
Discharge valve media instructions:
Discharge valve: Glass-lined equipment is a high silicon content of glass enamel. Through the 900 degrees high temperature coated metal tire made. It has good mechanical properties and corrosion-resistant properties, to prevent the media and metal ions replace the role of pollution products, and the surface smooth, wear-resistant, a certain degree of thermal stability.
① When the medium is water, acetone, alcohol, ammonia, barium carbonate, benzene and other corrosion-resistant fluids, the temperature range of -29 ℃ -425 ℃ use WCB.
② The use of media for the particles, oil, pulp, carbon dioxide should be used stainless steel, the temperature range should not exceed -60 ℃ -232 ℃.
③ Do not use fluoride ionic liquid (such as HF, etc.) nor alkali and phosphoric acid (temperature is less than 150 ℃, concentration> 30%).
(I) Corrosion resistance:
1, resistant to the general inorganic acids, organic acids, weak alkaline solution (P ≤ 60 ℃ PH ≤ 12) and organic media.
2, in hydrochloric acid, nitric acid, such as corrosive medium is better than stainless steel.
⑵ strong base and phosphoric acid (temperature is less than 150 ℃, concentration> 30%).
(Iii) heat resistance, allowed to use between -30 ℃ -240 ℃ (temperature rapid change less than 120 ℃).
(Iv) Insulation: the impact resistance of the smaller 2500 g / cm, and therefore should be used to avoid hard impact.
Discharge valve installation points:
① This product is generally horizontal installation.
② installation location, height, direction of import and export must meet the design requirements, the connection should be strong and tight.
③ installed in the insulation pipe on all types of manual valves, the handle shall not be down.
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