Pneumatic arc valve (also known as pneumatic palatal valve, sector valve) is a type of arc-shaped rotary valve. Pneumatic drive is a core structure with advantages such as low flow resistance, good sealing, fast opening and closing, anti blocking, wear-resistant (mainly based on actual reports), and easy maintenance. It is a cost-effective choice for powder/particle/slurry and fluid control, widely suitable for unloading, transportation, and regulation scenarios in industries such as environmental protection, building materials, metallurgy, chemical engineering, food and pharmaceuticals.
Good sales, core advantages (benefits)
Low flow resistance and good flow efficiency
The arc-shaped valve disc rotates around the axis, and when fully opened, the flow channel is streamlined without right angle dead zones or reduced diameter, greatly reducing the flow resistance of powder, particles, and slurry, and making it less prone to material accumulation and jamming. The flow capacity of the same caliber is superior to that of plug valves and butterfly valves, especially suitable for high concentration and solid media.
Excellent sealing performance and low leakage rate
The curved cover has a high degree of fit, and when combined with elastic/wear-resistant (based on actual reports) seals (such as rubber, PTFE, metal hard seals), it has excellent bidirectional sealing performance, which can prevent dust overflow and gas leakage, meet environmental and process sealing requirements, and is more stable than ordinary flap valves and plug valves.
Suitable speed for opening and closing, sensitive response
Driven by pneumatic actuators (cylinders), the action stroke is short, the torque is large, and the opening and closing time is generally ≤ 1 second. It can achieve suitable speed cutting/switching, adapt to high-frequency and fast-paced working conditions such as automatic production lines, emergency cutting, and pulse unloading, and has a response speed better than electric valves.
Anti clogging and wear-resistant (based on actual reports), suitable for poor media.
Non jamming structure wear-resistant (based on actual reports) (based on actual reports) lining plate (wear-resistant (based on actual reports) (based on actual reports) steel, ceramics, polyurethane) is friendly to media such as coal powder, cement, slag, ash, sand and gravel, sludge, etc. that are prone to wear and agglomeration, not easy to block, not easy to wear, have a long service life, and low maintenance frequency.
Simple structure and easy maintenance
Few core components (valve body, arc-shaped valve disc, shaft system, pneumatic actuator), no complex transmission, easy to disassemble and replace seals and vulnerable parts; Support online maintenance. Even if the valve body is at the bottom of the pipeline/warehouse, internal components can be disassembled and maintained separately to reduce downtime costs.
Strong adjustment and reversing ability
The two position switch can achieve proportional adjustment and flow control by adjusting the stroke of the pneumatic actuator; Some models support diversion/merging/reversing, replacing three-way valves and reversing valves, with no dead corners for material clamping, easy to clean, suitable for sanitary and viscous media scenarios.
Pneumatic drive Anran, explosion-proof (based on actual reports) (based on actual reports)
Powered by compressed air, with no risk of electric sparks, suitable for chemical, oil and gas, and dust explosion prevention (based on actual reports) areas; DCS/PLC automation systems can be equipped with solenoid valves and feedback switches, supporting remote control and interlock protection.
Flexible installation and good spatial adaptability.
The rotating structure takes up less space and can be installed horizontally, vertically, or diagonally. Suitable for limited spaces such as the bottom of material warehouses, pipe bends, and narrow equipment rooms. It is compatible with large diameters (DN50-DN1200) and can be combined with non-standard customization to adapt to various layouts such as bottom unloading, chutes, and chutes.
Excellent, typical usage range (industry scenario)
Environmental protection and dust removal system (core scenario)
Dust collector ash hopper unloading, bin pump feeding/exhaust, pneumatic conveying switch and adjustment;
Control of slurry/dust in desulfurization and denitrification system, sludge dewatering, wastewater treatment dosing, sludge discharge;
Garbage incineration fly ash/slag discharge, flue gas duct regulation, dust sealed transportation.
Building materials and cement industry
Bottom unloading of cement silo/clinker silo/fly ash silo, air chute switch, loading system flow control;
Unloading of aggregates/powders from mixing plants, transportation of sand and gravel aggregates, and metering and transportation of pre mixed mortar.
Metallurgy and Mining
Blast furnace coal powder injection, discharge of mineral powder/slag, sintering/pellet dust and ore return control;
Tailings, slurry, concentrate transportation, high-temperature flue gas, and dust removal emissions from the beneficiation plant.
Chemical and Coal Chemical Industry IV
Powder raw materials (carbon black, carbon black, PVC, soda ash, catalyst) unloading and transportation;
Coal to gas/coal to olefin powder/ash control, corrosive slurry, crystalline material switch adjustment;
Explosion proof (based on actual reports) (based on actual reports) area material transportation, discharge from the bottom of the reactor.
Food, pharmaceutical, and hygiene level scenarios
Unloading and measurement of food powders such as flour, starch, sugar, and milk powder;
Sanitary grade arc valve (3A/FDA certification) supports CIP/SIP online cleaning, without material jamming, suitable for conveying food raw materials, intermediates, and sterile powders containing particles/viscous media such as juice, syrup, and paste.
6. Electricity and Energy
Coal ash/slag discharge from thermal power plants, boiler feeding/slag discharge, and steam system regulation;
Control of biofuel unloading, desulfurization wastewater, and sludge.
Other bulk and fluid scenarios
Storage and unloading of coal, grain, feed, fertilizer and other particles/powders;
Viscous fluid control, such as paper pulp, paint/ink, paint, etc;
The speed is suitable for cutting off and adjusting the flow of bulk/loading systems at ports and terminals.
Thirdly, the boundary between the applicable medium and working conditions
Media: powder (cement, fly ash, coal powder, flour), particles (sand, grain, slag), slurry (sludge, slurry, desulfurization slurry), viscous fluid (syrup, paste), containing solid fluid, clean gas/steam;
Temperature: Conventional -20 ℃~300 ℃, high temperature type can reach 600 ℃ (metal hard seal), sanitary type -40 ℃~PTFE seal 140 ℃;
Pressure: normal pressure~1.6MPa, special models can reach 5MPa;
Caliber: DN50-DN1200, large caliber heavy-duty type suitable for heavy unloading in mines, cement and other industries.
