Rectangular fire damper

Application:

The shape of fire damper is rectangular and the construction is made of body, shaft,valve disc,,The material is stainless steel and can be pianted by your request,This type of fire damper is widely appicated in air conditioning system or ventilation system for marine or another place to keep from the fire or somke.

The fire damper can be controled by temperature,and It can be electrical automatically closed.Fire damper is open in normal condition,If the temperature of air within damper duct exceeds 70℃，The fusible link of fire damper will be broken to close the fire damper.

The time for refractory is 1.5h,The electrical signal could be output according to user‘s requirement，Fire damper should be reset manually.

Feature:

1.Stainless steel construction to prevent fire and smoke.

2.The time for refractory is 1.5h.

3.The coefficient of resistance is less than 0.4.

4.The damper will be automatically closed when the temperature is 70℃.

5.The height of body is 210mm.

6.Special size could be supplied.

Available size:

Nom.dia DN	Dia of rectangular		Flange inner size		Flange outter size		Distance of hole		Distance of bolt holes		No.of bolt holes
DN	a	b	a 1	b 1	A	B	C	C1	t	t 1	Short side	Long side	total
100	60	140	65	145	115	195	95	176	95	88	0	3	6
100	80	120	85	125	135	175	115	156	115	78		3	6
125	60	220	65	225	115	275	95	225	95	85		4	8
	80	160	85	65	135	215	115	196	115	98		3	6
	100	130	105	135	155	185	136	166	68	83	1	3	8
150	80	250	85	225	135	305	115	285	115	95	0	4
	100	200	105	205	155	255	136	236	68	118	1	3
	120	150	125	155	175	205	156	286	78	93	1	3
175	80	350	85	355	135	405	115	388	115	97	0	5	10
	100	250	105	255	155	305	136	285	68	95	1	4
	120	210	125	215	175	265	156	246	78	82		4
200	100	350	105	355	155	405	136	388	68	97		5	12
	120	280	125	285	175	335	156	315	78	105		4	10
	150	220	156	226	206	276	186	258	93	86		4	10