Electric Explosion-Proof Butterfly Valve
Keywords: metering pump accessories
Classification:
Electric butterfly valve
- DESCRIPTION
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Structural principle of electric explosion-proof butterfly valve:
The structural principle of the explosion-proof electric butterfly valve is to enclose all parts of the equipment that may ignite explosive media in a shell. The shell can withstand the internal explosion of flammable media that penetrates into the shell through any joint surface or structural gap of the shell without being damaged. The flameproof enclosure isolates the internal space of the equipment from the surrounding environment. When it explodes, the shell can withstand the explosion pressure without being damaged. At the same time, the structural gap of the shell can cool the flame, reduce the flame propagation speed or terminate the acceleration chain, so that the flame or dangerous flame products cannot pass through the explosion-proof gap to ignite external explosives. environment, thereby achieving the purpose of explosion proof.
Technical parameters of electric explosion-proof butterfly valve:
Functional form: Ordinary switch type, regulating type (4～20mA)
Ambient temperature: -30℃～+70℃
Power supply voltage: AC220V, AC380V (other customized DC24, etc.) 50/60Hz
Protection level: IP67, IP68 optional
Feature options (optional)
Explosion-proof type: Explosion-proof grade: dⅡBT3/T4
Signal feedback: active signal, S passive signal
With heater: allows drying of internal actuator components in humid environments (optional)
Manual function: The electric actuator has manual valve opening and closing functions
Adjustment type: Input 4~20mA signal to realize valve adjustment function
Electric explosion-proof butterfly valve design standards:
Design standards: GB/T2238-1989
Flange connection dimensions: GB/T9113.1-2000; GB/T9115.1-2000; JB78
Structure length: GB/T12221-1989
Pressure test: GB/T13927-2000; JB/T9092-1999
Electric explosion-proof butterfly valve parts materials:
Valve body: ductile steel, cast steel, alloy steel, stainless steel
Butterfly plate: gray cast iron, ductile cast steel, cast steel, stainless steel and special materials
Seal ring: various rubber, PTFE, stainless steel
Valve stem: 2Cr13, stainless steel
Performance specifications of electric explosion-proof butterfly valve:
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