Fresh air auxiliary material one-stop procurement.

Parameter Category	Parameter Item	Common Value/Range	Special Notes
Basic Parameters	Nominal Diameter	DN100–DN2400 / 800×800 rectangle, etc.	Supports Non-standard Customization
	Operating Temperature	-40℃ ~ +650℃	High-temperature models use stainless steel material
	Leakage Rate	≤0.5%	1000Pa static pressure, 10m/s wind speed
Drive Parameters	Pneumatic Pressure	4~8bar	Double-acting/Single-acting optional
	Electric Power Supply	AC220V/380V	Explosion-proof type optional
	Opening/Closing Time	35~45 seconds	Electric/Pneumatic Type
Structure and Material	Valve Body Material	304/316 stainless steel, galvanized steel plate	Corrosion-resistant, high-temperature 1
	Sealing Design	Triple-offset metal hard seal, PTFE lined	For high-temperature/corrosion-resistant applications
Performance Certification	Compliant Standards	GB/T 13927, ISO 5211, etc.	Leakage and Connection Standards

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Aluminum foil tube | Pvc pipe | Glass fiber cloth composite pipe | Canvas retractable duct

Stainless steel air damper

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Galvanized metal duct

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