What special pneumatic valve of pneumatic valve is the coal chemical industry?

gelatinization factory use pneumatic valve should be multifaceted.
should be considered out of stock in desulfurization system to adapt to the temperature and corrosion resistance and the standard of seal leakage. Commonly used with butterfly pneumatic pneumatic valve, pneumatic ball valve and gate valve.
breaker conveying system used pneumatic pneumatic valve, pneumatic valve, flashboard powder special pneumatic valve, v-shaped ball pneumatic butterfly valve, pneumatic valve, ceramic screw conveyor with pneumatic valves and considering the wear resistance of pneumatic valve.
hydrating system commonly used ordinary soft sealing butterfly pneumatic valve. Ammonia ammonia minimum standards for using stainless steel ball pneumatic valve, small diameter with three panel silk pneumatic ball valve, large diameter flange connection with two type pneumatic ball valve, sealing is good.

chemical pneumatic valve
chemical industry and coal chemical projects pneumatic valve pneumatic valve is a kind of important industrial pipeline flow control on attachment, facing the complex industrial systems and pneumatic valve variety of working conditions, want to choose a suitable pipeline system chemical pneumatic valves.

chemical description of pneumatic valves:
chemical pneumatic valve is a kind of important industrial pipeline flow control on the attachment, in the face of complex industrial systems and pneumatic valves are a great variety of different conditions, want to choose suitable for pneumatic valves, pipeline system and understand the performance of the pneumatic valve should grasp two steps of pneumatic valves and basis of the three should follow the principle of choosing pneumatic valves for petroleum, chemical industry.
chemical pneumatic valve is not only applicable scope is wide, and the dosage, chemical industry, of course, pneumatic valve to be higher than ordinary pneumatic valve requirements. Chemical pneumatic valves generally use media are relatively easy to corrosion, simple chlor-alkali industry, to large petrochemical enterprises, there are high temperature, high pressure, corrosion resistance, abrasion resistance, temperature, pressure difference is very big. Facing the high risk of pneumatic valves, shall be in strict accordance with the chemical industry in the process of selecting and using standard execution.

chemical principle of the selection of pneumatic valves:
chemical industry generally choose port for straight-through type pneumatic valve, the flow resistance is small, usually choose as deadline and open media use pneumatic valve, easy to adjust flow as control flow with pneumatic valve, cock pneumatic valve and ball valve is suitable for reversing shunt, shut down along the sealing surface of sliding with wiping the pneumatic valves are best suited for medium with suspended particles. Common chemical pneumatic valves with pneumatic pneumatic ball valve, gate valve, globe pneumatic valve, safety valve, cock pneumatic valve, check valve, etc. Chemical pneumatic valve mainstream media with chemicals, acid and alkali corrosive medium is various, main L and in respect of material, common medium also should choose as the dominant material, should choose a combination of many chemical fluid alloy steel or rubber fluorine pneumatic valve.

chemical pneumatic valves:
open/close function: cut off or communication pipe fluid flow;
adjustment: adjust flow rate, flow velocity;
throttling action: take the fluid through the pneumatic valve after produces a lot of pressure drop;
other role: a. Automatic opening and closing b. To maintain a certain pressure c. Vapor barrier drainage.

chemical pneumatic valve before use notice:
1) pneumatic valve inside and outside surface defects such as sand holes, cracks;
2. Pneumatic seat and aerodynamic body joint is rigid, it fits the pneumatic valve seat, pneumatic valve core sealing surface with and without defects;
(3) pneumatic valve rod connected to the pneumatic valve core is flexible and reliable, pneumatic valve stem is bent, thread is damaged;
4. Pneumatic valve opens is flexible, etc.

chemical pneumatic valve in use process problems
, and pipeline connection flange, thread leak;
and stuffing box leakage, waist cushion leakage and pneumatic valve stem to open fixed;
the seat closed is lax, pneumatic valve core and pneumatic form internal leakage