DWT Series Roof Exhauster

The DWT series roof exhauster is an advanced roof ventilator researched and developed after numerous CAD simulations, optimizations, and experiments. It features a high efficiency, low noise, smooth vibration free operation, excellent corrosion resistance and excellent explosion resistance. This roof ventilator is manufactured using a variety of materials to meet the needs of different applications and environments. The fan hood and fan duct are made of steel or fiber reinforced polymer (FRP), the impeller is made of aluminum alloy, steel, fiber reinforced polymer (FRP) or ABS plastic. The roof exhauster is most often used for air supply and air exhaust in several industries, including power generation, chemical, rubber, pharmaceutical, food processing, metallurgical, and more. It is also used in high-rise buildings for an exceptional ventilation performance.

Roof Exhauster Types

This series of roof exhausters is available in a variety of models with different pressures and airflows to meet a wide array of applications.

The DWT-I series are roof axial fans ideal for the applications requiring a medium pressure and large airflow. DWT-II series are roof centrifugal fans ideal for the applications requiring a high pressure and small airflow. Specifications of DWT-I Series Roof Exhauster (Fixed Discharge Angle)

Model	Impeller Diameter(mm)	Airflow (m3/h)	Pressure(pa)	Speed(rpm)	Power(Kw)	Noise dB(A)
3	300	3366	185	2850	0.37	66
		3060	210
		2652	237
		1683	63	1450	0.06	52
		1591	67
		1479	73
4	400	7599	197	2850	0.75	69
		6477	235
		5406	255
		5814	180	1450	0.55	67
		5508	188
		4672	194
5	500	8160	138	1450	0.55	68
		7140	165
		5712	195
		7140	115	960	0.37	63
		6834	124
		6528	134
		6120	90	720	0.25	58
		5100	94
		4182	98
6	600	15300	237	1450	1.5	73
		14280	256
		13260	272
		11220	171	960	1.1	67
		10200	187
		9282	197
		8670	113	720	0.55	52

Specifications of DWT-I Series Roof Exhauster (Fixed Discharge Angle)

Model	Impeller Diameter (mm)	Airflow (m3/h)	Pressure(pa)	Speed(rpm)	Power(Kw)	Noise dB(A)
7	700	17850	168	960	1.5	69
		15300	205
		12750	216
		12240	144	720	0.75	63
		11220	166
		9384	181
		9486	85	560	0.55	59
		8670	96
		7344	104
8	800	17340	179	960	2.2	72
		25500	212
		23460	233
		20400	132	720	1.5	66
		18360	157
		16320	170
		16065	80	560	0.75	63
		14790	98
		12495	123
9	900	35190	206	960	3.0	76
		29580	241
		24480	261
		32640	129	720	2.2	73
		28560	159
		24480	181
		24480	104	560	1.1	67
		21930	120
		18972	129
10	1000	51000	256	960	5.5	81
		45900	292
		39780	323
		46920	144	720	3.0	76
		40800	170
		35700	187
		28560	113	560	1.5	69
		24480	128
		20400	136
11.2	1120	58038	258	960	5.5	82
		50490	299
		41208	328
		53550	141	720	3.0	77
		45900	172
		40800	187
		32640	113	560	1.5	71

Specifications of DWT-I Series Roof Exhauster (Variable Discharge Angle)

Model	Impeller Diameter(mm)	Discharge Angle（）	Airflow (m3/h)	Pressure(pa)	Speed(rpm)	Power(Kw)	Noise dB(A)
12	1200	22	58140	200	720	5.5	73
		19	51000	209
		16	44880	213
		27	42840	129	560	3	67
		24	38250	137
		21	33660	151
14	1400	17	78234	255	720	7.5	77
		15	69360	266
		13	58650	273
		22	70380	162	480	1	69
		20	61200	172
		18	52530	179
15	1500	19	90270	199	720	7.5	78
		17	81600	207
		15	71400	212
		23	75990	152	480	1	70
		21	66300	161
		19	56916	168
16	1600	20	109650	240	720	11	79
		18	96900	253
		16	83130	261
		27	62220	134	320	4	70
		25	53550	155
		23	43452	170
18	1800	17	131886	266	720	15	80
		15	114750	282
		13	98379	293
		23	96135	124	480	5.5	71
		21	87873	139
		19	75786	146
		26	80733	117	320	4	66
		23	72981	129
		20	63750	151
20	2000	23	172074	219	480	15	78
		21	153000	239
		19	133620	252
		21	128010	120	320	5.5	68
		18	112200	123
		15	96900	135
22	2200	18	210222	197	480	15	79
		16	183600	209
		14	168300	214
		29	153000	138	320	7.5	71
		27	122400	145
		25	121890	158
24	2400	19	225216	216	480	18.5	84
		17	202470	233
		15	180030	251
		26	178500	151	320	11	77
		23	165240	167
		20	137700	192
		21	142800	153	220	7.5	70
		18	122400	165
		15	86700	174

Specifications of DWT-II Series Roof Exhauster

Model	Impeller Diameter(mm)	Airflow (m3/h)	Pressure(pa)	Speed(rpm)	Power(Kw)	Noise dB(A)
3	1450	898	224	0.75	≤57	88
		949	214
		1081	194
		1153	173
		1275	122
3.5	1450	1428	306	1.1	≤59	95
		1499	296
		1714	265
		1826	235
		2030	173
4	1450	1928	418	1.1	≤62	115
		2122	398
		2234	377
		2560	337
		2734	306
4.5	1450	3029	510	1.1	≤63	154
		3182	479
		3641	428
		3886	388
		4600	235
5	1450	4151	632	2.2	≤64	195
		4376	592
		4998	530
		5549	500
		6232	388
6	960	5120	398	1.5	≤65	234
		5620	377
		6242	337
		6916	296
		7487	224
7	960	8180	561	3.0	≤68	292
		8976	510
		10027	459
		11057	408
		12169	377
8	960	12811	734	7.5	≤70	428
		13841	704
		14443	663
		16136	602
		17044	530
10	720	22593	1091	11	≤72	475
		23766	1040
		27101	938
		28968	826
		32069	714