Fire damper

1. Both air damper and fire damper, 2. Round and square shape, 3.Materail: Carbon sheet and galvanized steel optional - details see: https://www.buildingsupplieshub.com/fire-damper-10075061

Place of Origin: Jiangsu China (Mainland)

Brand Name: SENTAI

Technical target of Exhaust smoke and smoke proof valve
No.	Name	Specification
1	Specification of flange	long side A or diameterφof valve(mm)					width of flange side(mm)
		≤160					25
		Area<0.15m²(500×300)					30
		>630-1500					40
		>1500					50
		≤φ320					25
		320≤φ500					30
		≥φ560					40
2	temperature fuse	Static project operating temperature 280°C, valve close
3	valve body	2.0mm
4	blade	2.0mmcold pilger plate
5	axial blade	φ12.7mm round copper
6	shaft housing	1.5mm brass
7	coefficient of drag of valve	0.4-0.5 when the valve is full open
8	size of inspection hole	small valveφ5025,large valve φ7530
9	surface rust prevention	cover anti-corrosive primer on both on the outer surface ,fire resisting paint on outer surface.
10	ring flange	the distance between flange and interconnected points of valve body is below 65mm
		distance between flange and bolt hole connected with wind tube is 100mm,φ9.5mm
11	auto-manual closing handling device	voltage rating					DC24V±10%
		rated current					0.7A
		micro switch					contact ratingAC380V,3A
		motion deflection distance					10-70kg,f/cm
		motion type					auto-manual close
		reset type					hand-reset start
12	Avional louvered air diffuser	is only applied for Multi-Blade fire damper and multi-valve supply-air outlet
13	air leakage	under standard conditions, it is not more than 700m³/m².h when two sides psid is 300Pa after the valve close.
14	valve height(B),width(A)(mm)	below 250	320	400	500	630		800 A≤1000	800 A>1250	800 A>1250	1250 A>1250
	No. of closing handling device(unit)	1	1	1	1	1		1	2	2	2
	number of valve blades(unit)	1	2	2	3	3		4	6	6	6