Vacuum Fans | McMaster-Carr

Also known as regenerative blowers, use these to produce high-flow compressed air with low pressure or vacuum to operate pump drives, lift tables, and conveying systems. Compressed air blowers are also used for drying, exhausting, and aeration.

Air circulates inside the blower housing to compress air, which generates pressure or vacuum.

Single Stage

Single-stage blowers circulate air once and then exhaust.

Inverter Rated—Inverter-rated blowers have a motor that can run at slow speeds without overheating, so they can be used with a motor speed control (variable frequency drive).

	Blowers														Air Intake Filters		Valves
							Overall				Pipe Size
	Max. Pressure	Max. Flow Rate @ Pressure	Vacuum Rating	Power, hp	Full Load Current @ Voltage	Volume (Sound)	Lg.	Wd.	Ht.	Temp. Range, ° F	Inlet	Outlet		Each		Each		Each
Single Phase, 120/208/230V AC







				NPT Female Inlet and Outlet

				1 psi 29 in. H₂O	27 ft³/min @ 0 psi	1.9 in. Hg 27 in. H₂O	1/8	2.3 amp @ 115V AC 1.2 amp @ 208V AC 1.2 amp @ 230V AC	57 dBA	9"	8"	9"	32 to 100	1	1	9960K51	0000000	9960K823	0000000	9960K821	0000000


				1 psi 39 in. H₂O	42 ft³/min @ 0 psi	2.6 in. Hg 35 in. H₂O	1/3	3.8 amp @ 115V AC 2 amp @ 208V AC 1.9 amp @ 230V AC	63 dBA	10"	9"	9"	32 to 100	1	1	9960K52	00000000	9960K823	000000	9960K821	000000
				1 psi 52 in. H₂O	156 ft³/min @ 0 psi	3.8 in. Hg 51 in. H₂O	2	19.7 amp @ 115V AC 10.6 amp @ 208V AC 9.9 amp @ 230V AC	71 dB	14"	13"	14"	5 to 100	2	2	4393K51	00000000	———	0	4393K41	000000
				2 psi 42 in. H₂O	52 ft³/min @ 0 psi	3 in. Hg 40 in. H₂O	1/2	6 amp @ 115V AC 3.2 amp @ 208V AC 3 amp @ 230V AC	68 dBA	13"	10"	10"	32 to 100	1 1/4	1 1/4	9960K54	00000000	9960K824	000000	9960K821	000000
				2 psi 52 in. H₂O	92 ft³/min @ 0 psi	3.5 in. Hg 48 in. H₂O	1	9.8 amp @ 115V AC 5.2 amp @ 208V AC 4.9 amp @ 230V AC	68 dBA	13"	11"	12"	32 to 100	1 1/2	1 1/2	9960K57	00000000	9960K825	000000	9960K821	000000
				2 psi 65 in. H₂O	127 ft³/min @ 0 psi	4.4 in. Hg 60 in. H₂O	1 1/2	17.5 amp @ 115V AC 10 amp @ 208V AC 9 amp @ 230V AC	74 dBA	16"	13"	14"	32 to 100	1 1/2	1 1/2	9960K58	00000000	9960K825	000000	9960K821	000000


				Single Phase, 120/230V AC (Not Inverter Rated)







								BSPP Female Inlet and Outlet

								2 psi 56 in. H₂O	57 ft³/min @ 0 psi	3.8 in. Hg 52 in. H₂O	1/2	7 amp @ 115V AC 3.4 amp @ 230V AC	56 dBA	10"	10"	10"	5 to 100	1 1/4	1 1/4	1010K41	00000000	———	0	———	0


								3 psi 76 in. H₂O	102 ft³/min @ 0 psi	5.3 in. Hg 72 in. H₂O	1 1/2	16 amp @ 115V AC 8 amp @ 230V AC	64 dBA	12"	11"	12"	5 to 100	1 1/2	1 1/2	1010K42	00000000	———	0	———	0


								Three Phase, 190/230/380/460V AC (Inverter Rated)







												NPT Female Inlet and Outlet

												2 psi 56 in. H₂O	103 ft³/min @ 0 psi	4.1 in. Hg 56 in. H₂O	1	4.4 amp @ 190V AC 3.7 amp @ 230V AC 2.2 amp @ 380V AC 2.1 amp @ 460V AC	64 dBA	11"	11"	12"	32 to 100	1 1/2	1 1/2	1010K35	00000000	———	0	———	0


												3 psi 79 in. H₂O	150 ft³/min @ 0 psi	6.5 in. Hg 88 in. H₂O	2 3/4	7.5 amp @ 190V AC 7.3 amp @ 230V AC 4.3 amp @ 380V AC 4.4 amp @ 460V AC	70 dBA	14"	13"	15"	32 to 100	2	2	1010K36	00000000	———	0	———	0
												3 psi 92 in. H₂O	221 ft³/min @ 0 psi	7.1 in. Hg 96 in. H₂O	4 1/2	12.5 amp @ 190V AC 12.6 amp @ 230V AC 7.2 amp @ 380V AC 7.3 amp @ 460V AC	72 dBA	15"	15"	17"	32 to 100	2	2	1010K38	00000000	———	0	———	0
												4 psi 116 in. H₂O	150 ft³/min @ 0 psi	7.7 in. Hg 104 in. H₂O	3 1/4	9.7 amp @ 190V AC 10.3 amp @ 230V AC 5.6 amp @ 380V AC 6 amp @ 460V AC	70 dBA	14"	13"	15"	32 to 100	2	2	1010K37	00000000	———	0	———	0


												Three Phase, 208/230/460V AC







																NPT Female Inlet and Outlet

																2 psi 43 in. H₂O	53 ft³/min @ 0 psi	2.9 in. Hg 40 in. H₂O	1/2	2 amp @ 208V AC 2 amp @ 230V AC 1 amp @ 460V AC	68 dBA	11"	10"	10"	32 to 100	1 1/4	1 1/4	9960K45	00000000	9960K824	000000	9960K821	000000


2 psi 52 in. H₂O	92 ft³/min @ 0 psi															3.5 in. Hg 48 in. H₂O	1	3.4 amp @ 208V AC 3.2 amp @ 230V AC 1.6 amp @ 460V AC	68 dBA	13"	11"	12"	32 to 100	1 1/2	1 1/2	9960K56	00000000	9960K825	000000	9960K821	000000
2 psi 65 in. H₂O	127 ft³/min @ 0 psi															4.4 in. Hg 60 in. H₂O	1 1/2	5.1 amp @ 208V AC 4.9 amp @ 230V AC 2.5 amp @ 460V AC	74 dBA	14"	13"	14"	32 to 100	1 1/2	1 1/2	9960K59	00000000	9960K825	000000	9960K821	000000


Three Phase, 208/230/460V AC (Inverter Rated)







																NPT Female Inlet and Outlet

																1 psi 52 in. H₂O	156 ft³/min @ 0 psi	3.8 in. Hg 51 in. H₂O	2	5.7 amp @ 208V AC 5.7 amp @ 230V AC 2.8 amp @ 460V AC	71 dB	14"	13"	14"	5 to 100	2	2	4393K52	00000000	———	0	4393K41	000000


																2 psi 80 in. H₂O	156 ft³/min @ 0 psi	6.6 in. Hg 89 in. H₂O	3	8.2 amp @ 208V AC 8.3 amp @ 230V AC 4.1 amp @ 460V AC	71 dB	14"	13"	14"	5 to 100	2	2	4393K53	00000000	———	0	4393K41	000000
																3 psi 110 in. H₂O	216 ft³/min @ 0 psi	8.1 in. Hg 110 in. H₂O	5 1/2	14.6 amp @ 208V AC 15.1 amp @ 230V AC 7.5 amp @ 460V AC	74 dB	15"	15"	15"	5 to 100	2	2	4393K54	00000000	———	0	4393K41	000000
				4 psi 105 in. H₂O												207 ft³/min @ 0 psi	6.5 in. Hg 88 in. H₂O	5	13 amp @ 208V AC 12 amp @ 230V AC 6 amp @ 460V AC	72 dBA	19"	15"	15"	32 to 100	2	2	9960K63	00000000	9960K826	000000	9960K821	000000
				4 psi 110 in. H₂O	265 ft³/min @ 0 psi											6.6 in. Hg 90 in. H₂O	6	16 amp @ 208V AC 15 amp @ 230V AC 7.5 amp @ 460V AC	79 dBA	17"	17"	18"	32 to 100	2	2	9960K64	00000000	9960K826	000000	9960K821	000000
				5 psi 125 in. H₂O	420 ft³/min @ 0 psi											8.1 in. Hg 110 in. H₂O	10	35 amp @ 208V AC 29.5 amp @ 230V AC 15 amp @ 460V AC	78 dBA	22"	18"	20"	32 to 100	2 1/2	2 1/2	9960K65	00000000	9960K827	000000	9960K821	000000


				Three Phase, 220/275/380/480V AC (Inverter Rated)







																BSPP Female Inlet and Outlet

																2 psi 64 in. H₂O	57 ft³/min @ 0 psi	4.4 in. Hg 60 in. H₂O	1/2	2.6 amp @ 200V AC 2.6 amp @ 275V AC 1.5 amp @ 380V AC 1.5 amp @ 480V AC	56 dBA	10"	10"	10"	5 to 100	1 1/4	1 1/4	1010K24	00000000	———	0	———	0


								Three Phase, 230/460V AC (Inverter Rated)







																NPT Female Inlet and Outlet

																4 psi 105 in. H₂O	795 ft³/min @ 0 psi	7 in. Hg 95 in. H₂O	18	52 amp @ 230V AC 26 amp @ 460V AC	79 dBA	29"	18"	20"	32 to 100	2 1/2	4	9960K66	00000000	9960K827	000000	9960K822	00000000

Two Stage

Two-stage blowers circulate air twice and then exhaust, creating higher pressure or vacuum than single-stage blowers with the same horsepower.

Inverter Rated—Inverter-rated blowers have a motor that can run at slow speeds without overheating, so they can be used with a motor speed control (variable frequency drive).

	Blowers														Valves
							Overall				Pipe Size
	Max. Pressure	Max. Flow Rate @ Pressure	Vacuum Rating	Power, hp	Full Load Current @ Voltage	Volume (Sound)	Lg.	Wd.	Ht.	Temp. Range, ° F	Inlet	Outlet		Each		Each
Single Phase, 120/208/230V AC







				NPT Female Inlet and Outlet

				4 psi 120 in. H₂O	35 ft³/min @ 0 psi	8.1 in. Hg 110 in. H₂O	1	9.4 amp @ 115V AC 5.5 amp @ 208V AC 5 amp @ 230V AC	64 dB	16"	10"	11"	5 to 100	3/4	3/4	4393K58	000000000	4393K41	0000000


				5 psi 140 in. H₂O	65 ft³/min @ 0 psi	11.1 in. Hg 151 in. H₂O	2	19.7 amp @ 115V AC 10.6 amp @ 208V AC 9.9 amp @ 230V AC	72 dB	15"	13"	14"	5 to 100	1 1/4	1 1/4	4393K63	00000000	4393K41	000000
				5 psi 141 in. H₂O	81 ft³/min @ 0 psi	11.1 in. Hg 151 in. H₂O	3	29.4 amp @ 115V AC 16.6 amp @ 208V AC 14.8 amp @ 230V AC	73 dB	15"	14"	15"	5 to 100	1 1/4	1 1/4	4393K65	00000000	4393K41	000000


				Three Phase, 208/230/460V AC (Inverter Rated)







								NPT Female Inlet and Outlet

								4 psi 120 in. H₂O	35 ft³/min @ 0 psi	8.1 in. Hg 110 in. H₂O	1	2.9 amp @ 208V AC 2.9 amp @ 230V AC 1.4 amp @ 460V AC	64 dB	16"	10"	11"	5 to 100	3/4	3/4	4393K59	00000000	4393K41	000000


								5 psi 140 in. H₂O	65 ft³/min @ 0 psi	11.1 in. Hg 151 in. H₂O	2	5.8 amp @ 208V AC 5.2 amp @ 230V AC 2.8 amp @ 460V AC	72 dBA	16"	13"	14"	5 to 100	1 1/4	1 1/4	4393K47	00000000	4393K41	000000
								5 psi 141 in. H₂O	81 ft³/min @ 0 psi	11.1 in. Hg 151 in. H₂O	3	8.3 amp @ 208V AC 7.4 amp @ 230V AC 4 amp @ 460V AC	73 dBA	16"	14"	15"	5 to 100	1 1/4	1 1/4	4393K38	00000000	4393K41	000000
								6 psi 191 in. H₂O	65 ft³/min @ 0 psi	11.1 in. Hg 151 in. H₂O	3	8.2 amp @ 208V AC 8.3 amp @ 230V AC 4.1 amp @ 460V AC	73 dB	15"	13"	14"	5 to 100	1 1/4	1 1/4	4393K64	00000000	4393K41	000000
								7 psi 201 in. H₂O	81 ft³/min @ 0 psi	11.1 in. Hg 151 in. H₂O	4	10.9 amp @ 208V AC 11.1 amp @ 230V AC 5.5 amp @ 460V AC	73 dB	15"	14"	15"	5 to 100	1 1/4	1 1/4	4393K66	00000000	4393K41	000000

High-Flow Low-Pressure Hazardous Location Compressed Air Blowers

Safely produce high-flow compressed air with low pressure or vacuum in environments with flammable gases and combustible dust, such as propane and carbon-based dust. These blowers have an explosion-proof motor and are UL listed for use in hazardous locations. Also known as regenerative blowers, they are commonly used to operate pump drives, lift tables, and conveying systems. They can also be used for drying, exhausting, and aerating.

Single Stage

Image of Product. Front orientation. Blowers. High-Flow Low-Pressure Hazardous Location Compressed Air Blowers.

							Overall				Pipe Size
	Max. Pressure	Max. Flow Rate @ Pressure	Vacuum Rating	Power, hp	Full Load Current @ Voltage	Volume (Sound), dBA	Lg.	Wd.	Ht.	Temp. Range, ° F	Inlet	Outlet	Hazardous Location Rating		Each
Three Phase, 208/230/460V AC (Inverter Rated)







				NPT Female Inlet and Outlet

				2 psi 50 in. H₂O	556 ft³/min @ 0 psi	3.7 in. Hg 50 in. H₂O	10	24.3 amp @ 208V AC 22.4 amp @ 230V AC 11.2 amp @ 460V AC	81	25"	20"	22"	5 to 100	4	4	NEC Class I Divisions 1, 2 Group D NEC Class II Division 2 Groups F, G	4393K74	000000000


				2 psi 60 in. H₂O	471 ft³/min @ 0 psi	4.4 in. Hg 59 in. H₂O	10	24.3 amp @ 208V AC 22.4 amp @ 230V AC 11.2 amp @ 460V AC	81	25"	19"	22"	5 to 100	4	4	NEC Class I Divisions 1, 2 Group D NEC Class II Division 2 Groups F, G	4393K73	00000000
				2 psi 68 in. H₂O	381 ft³/min @ 0 psi	5 in. Hg 67 in. H₂O	7 1/2	18.9 amp @ 208V AC 17.8 amp @ 230V AC 8.9 amp @ 460V AC	80	23"	18"	19"	5 to 100	3	3	NEC Class I Divisions 1, 2 Group D NEC Class II Division 2 Groups F, G	4393K72	00000000
				4 psi 116 in. H₂O	294 ft³/min @ 0 psi	8.8 in. Hg 119 in. H₂O	7 1/2	18.9 amp @ 208V AC 17.8 amp @ 230V AC 8.9 amp @ 460V AC	80	23"	16"	19"	5 to 100	3	3	NEC Class I Divisions 1, 2 Group D NEC Class II Division 2 Groups F, G	4393K71	00000000

Two Stage

							Overall				Pipe Size
	Max. Pressure	Max. Flow Rate @ Pressure	Vacuum Rating	Power, hp	Full Load Current @ Voltage	Volume (Sound), dBA	Lg.	Wd.	Ht.	Temp. Range, ° F	Inlet	Outlet	Hazardous Location Rating		Each
Three Phase, 208/230/460V AC (Inverter Rated)







				NPT Female Inlet and Outlet

				3 psi 110 in. H₂O	220 ft³/min @ 0 psi	8.1 in. Hg 110 in. H₂O	7 1/2	18.9 amp @ 208V AC 17.8 amp @ 230V AC 8.9 amp @ 460V AC	78	27"	19"	22"	5 to 100	4	4	NEC Class I Divisions 1, 2 Group D NEC Class II Division 2 Groups F, G	4393K77	000000000


				4 psi 115 in. H₂O	274 ft³/min @ 0 psi	8.5 in. Hg 115 in. H₂O	10	24.3 amp @ 208V AC 22.4 amp @ 230V AC 11.2 amp @ 460V AC	81	27"	20"	22"	5 to 100	4	4	NEC Class I Divisions 1, 2 Group D NEC Class II Division 2 Groups F, G	4393K78	00000000
				5 psi 150 in. H₂O	167 ft³/min @ 0 psi	11 in. Hg 149 in. H₂O	7 1/2	18.9 amp @ 208V AC 17.8 amp @ 230V AC 8.9 amp @ 460V AC	77	23"	18"	19"	5 to 100	2	2	NEC Class I Divisions 1, 2 Group D NEC Class II Division 2 Groups F, G	4393K76	00000000
				8 psi 240 in. H₂O	128 ft³/min @ 0 psi	11.9 in. Hg 161 in. H₂O	7 1/2	18.9 amp @ 208V AC 17.8 amp @ 230V AC 8.9 amp @ 460V AC	75	27"	16"	19"	5 to 100	2	2	NEC Class I Divisions 1, 2 Group D NEC Class II Division 2 Groups F, G	4393K75	00000000

Hand-Held Blowers

Clear leaves and debris.

Electric

Vacuum Kit with Bag—These blowers come with a bag attachment and can also be used as a vacuum.

			Electrical
Max. Airflow Speed, mph	Overall Lg.	Material	Connection	No. of Blades	Includes	Certification		Each
250	43"	Plastic	Straight Blade	2	Vacuum Kit with Bag	CSA Certified	6300T9	0000000

Battery Powered

Vacuum Kit with Bag—These blowers come with a bag attachment and can also be used as a vacuum.

Max. Airflow Speed, mph	Overall Lg.	Material	Batteries Included	Includes	Certification		Each
120	20"	Plastic	Yes	Battery Charger, Vacuum Kit with Bag	UL Listed	6300T34	0000000

Replacement Batteries

		Each
Battery (40-V Lithium Ion)	7474T33	0000000

Wind-Driven Roof-Mount Exhaust Fans

Designed to spin freely with the slightest breeze, these fans create a vacuum that draws air out from buildings and ventilation systems—no electricity required. They are also known as turbine ventilators. Mount fans on your roof away from wind obstructions.

	Overall Ht.	Airflow @ Wind Speed	Thk.	Max. Temp., ° F		Each
Galvanized Steel



	6"	14 1/2"	145 ft³/min @ 4 mph	0.018"	150	1992K12	0000000


	8"	15 1/2"	255 ft³/min @ 4 mph	0.018"	150	1992K14	000000
	10"	16 3/4"	425 ft³/min @ 4 mph	0.018"	150	1992K16	000000
	12"	17 1/4"	630 ft³/min @ 4 mph	0.024"	150	1992K17	000000
	14"	20"	700 ft³/min @ 4 mph	0.024"	150	1992K18	000000
	16"	22 1/2"	950 ft³/min @ 4 mph	0.024"	150	1992K21	000000
	18"	24"	1,200 ft³/min @ 4 mph	0.024"	150	1992K22	000000
	20"	24 1/2"	1,700 ft³/min @ 4 mph	0.024"	150	1992K23	000000
	24"	29 1/2"	2,350 ft³/min @ 4 mph	0.024"	150	1992K24	000000
	30"	32"	2,700 ft³/min @ 4 mph	0.03"	150	1992K25	000000
	36"	38"	4,000 ft³/min @ 4 mph	0.03"	150	1992K27	000000


	Stainless Steel



			6"	14 1/2"	110 ft³/min @ 4 mph	0.018"	150	1992K43	000000


			8"	15 1/2"	195 ft³/min @ 4 mph	0.018"	150	1992K45	000000
			10"	16 3/4"	305 ft³/min @ 4 mph	0.018"	150	1992K47	000000
			12"	17 1/4"	440 ft³/min @ 4 mph	0.024"	150	1992K48	000000
			14"	20"	600 ft³/min @ 4 mph	0.024"	150	1992K49	000000
			16"	22 1/2"	790 ft³/min @ 4 mph	0.024"	150	1992K52	000000
			18"	24"	1,000 ft³/min @ 4 mph	0.024"	150	1992K53	000000
			20"	24 1/2"	1,200 ft³/min @ 4 mph	0.024"	150	1992K54	000000
			24"	29 1/2"	1,700 ft³/min @ 4 mph	0.024"	150	1992K55	000000

Mounting Bases


Flat Base	Straight Base

Slope Base

All bases have a square bottom, round top, and flashing to simplify installation.

To Order: For slope bases, please specify pitch: _1/12-_11/12 in increments of _1/12. To determine pitch, use an angle indicator or divide rise by run (see illustration). For instance, if your roof rises 5" in 12" of horizontal space, your pitch is _5/12.

					Flat Bases		Straight Bases		Slope Bases
Outlet Dia.	Base Wd.	Ht.	Flashing Wd.	Material		Each		Each		Each
8"	10"	10"	4"	Galvanized Steel	2003K91	000000	2003K51	000000	2003K31	0000000
10"	12"	10"	4"	Galvanized Steel	2003K92	00000	2003K52	00000	2003K32	000000
12"	14"	10"	4"	Galvanized Steel	2003K93	00000	2003K53	00000	2003K33	000000
14"	16"	10"	4"	Galvanized Steel	2003K94	00000	2003K54	000000	2003K34	000000
16"	18"	10"	4"	Galvanized Steel	2003K95	000000	2003K55	000000	2003K35	000000
18"	22"	10"	4"	Galvanized Steel	2003K96	000000	2003K56	000000	2003K36	000000
20"	24"	10"	4"	Galvanized Steel	2003K97	000000	2003K57	000000	2003K37	000000
24"	30"	12"	4"	Galvanized Steel	2003K98	000000	2003K58	000000	2003K38	000000