Double Layer Micro Perforated Plate Muffler [wx]

Product Description

WX muffler in low, medium and high frequency environment, its noise reduction is more flat and larger, especially in low frequency environment. It is widely used in high-rise hotels, factory and enterprise purification workshops, aseptic rooms, food hygiene ventilation and air conditioning systems and in special environments such as high temperature, high-speed air flow, moisture, dust, etc.

The outer tube is made of galvanized metal plate, the inner tube is made of less than 1.0mm thin plate (with a hole diameter less than or equal to 1mm, with a perforation rate of 1-5%), and the inner and outer tubes are strengthened and fixed by a trough type framework, which can be used in more In a wide frequency band, a better noise elimination effect is obtained.

Parameter

Noise elimination（dB）
Voice frequency （Hz）		31.5	63	125	225	500	1K	2K	4K	8K	Resistance loss value Loss（mmH2O）
Wind speed （m/s）	Static state	-	3.5	5	14.5	12	19.5	9	6	4	4
	5	-	3.5	5.5	14	12	19.5	8.5	6.5	4	4
	8	-	3.5	6	14	12.5	20.5	8.5	6	4	4
	10	-	4	6.5	14.5	13	20.5	9	6.5	4.5	4.5

Number	Size selection H×W (mm)	Specification of installation flange (mm)	External size A×B (mm)	Applicable air volume （m3/h)	Number	Size selection H×W (mm)	Specification of installation flange (mm)	External size A×B (mm)	Applicable air volume （m3/h)
1	320×250	L30×4	720×650	<4300	12	1000×400	L30×4	1400×800	<2100
2	320×320	L30×4	720×720	<5500	13	1000×500	L30×4	1400×900	<2700
3	400×250	L30×4	800×650	<5400	14	1000×630	L30×4	1400×1030	<3400
4	400×320	L30×4	800×720	<6900	15	1000×800	L30×4	1400×1200	<4300
5	400×400	L30×4	800×800	<8600	16	1000×1000	L30×4	1400×1400	<5400
6	500×250	L30×4	900×650	<6700	17	1250×400	L30×4	1650×800	<2700
7	500×320	L30×4	900×720	<8600	18	1250×500	L30×4	1650×900	<3300
8	500×400	L30×4	900×800	<10800	19	1250×630	L30×4	1650×1030	<4200
9	500×500	L30×4	900×900	<13000	20	1250×800	L30×4	1650×1200	<5400
10	630×250	L30×4	1030×650	<8500	21	1250×1000	L30×4	1650×1400	<6700
11	630×320	L30×4	1030×720	<1000	22	1250×1250	L30×4	1650×1650	<8400