1/6 hp Pumps | McMaster-Carr

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22 Products

About Process Pumps

How to Determine Feet of Head

How to Prime Your Pump

About Vacuum Pumps

About Sump, Water-Removal, Condensate, and Submersible Pumps

Accommodate performance changes in your system with a three-speed switch that adjusts flow rate. Install these pumps directly in your pipeline for applications such as hot-water circulation and hydronic heating and cooling. They have an open dripproof (ODP) motor for use in clean, dry, and well-ventilated environments. Mount horizontally with the included pipe connectors. Do not run dry or use with solids. Note: If flow control is needed, place valves or reducers on the discharge side; never restrict the inlet of a pump with a valve or reducer.

Pumps with 304 stainless steel housing are lead free.

Flow Rate, gpm (Speed No.)								Pipe Size (Female, NPT)		Overall
Max.	@ 10 ft. of Head	@ 20 ft. of Head	Current, A (Speed No.)	Flow Adjustment Rate	Max. ft. of Head	Max. Viscosity, cP	hp	Intake	Discharge	Lg.	Wd.	Ht.		Each
120V AC, Single Phase—Without Thermal Overload Protection
Cast Iron Housing—Hardwire
6 (1), 11 (2), 18 (3)	2 (1), 6 (2), 11 (3)	1 (2), 3 (3)	0.7 (1), 0.8 (2), 1 (3)	± 10%	24	1	1/6	1	1	6"	5"	6 3/8"	00000000	0000000
6 (1), 11 (2), 18 (3)	2 (1), 6 (2), 11 (3)	1 (2), 3 (3)	0.7 (1), 0.8 (2), 1 (3)	± 10%	24	1	1/6	1 1/4	1 1/4	6"	5"	6 3/8"	00000000	000000
6 (1), 11 (2), 18 (3)	2 (1), 6 (2), 11 (3)	1 (2), 3 (3)	0.7 (1), 0.8 (2), 1 (3)	± 10%	24	1	1/6	1 1/2	1 1/2	6"	5"	6 3/8"	00000000	000000
304 Stainless Steel Housing—Hardwire
6 (1), 11 (2), 18 (3)	2 (1), 6 (2), 11 (3)	1 (2), 3 (3)	0.7 (1), 0.8 (2), 1 (3)	± 10%	24	1	1/6	1	1	6"	5"	6 3/8"	00000000	000000
6 (1), 11 (2), 18 (3)	2 (1), 6 (2), 11 (3)	1 (2), 3 (3)	0.7 (1), 0.8 (2), 1 (3)	± 10%	24	1	1/6	1 1/4	1 1/4	6"	5"	6 3/8"	00000000	000000
6 (1), 11 (2), 18 (3)	2 (1), 6 (2), 11 (3)	1 (2), 3 (3)	0.7 (1), 0.8 (2), 1 (3)	± 10%	24	1	1/6	1 1/2	1 1/2	6"	5"	6 3/8"	00000000	000000

Compact Inline Circulation Pumps for Water

Use these pumps in pipelines with limited clearance. Install directly in your pipeline for applications such as hot-water circulation and hydronic heating and cooling. Pumps mount horizontally or vertically with required pipe connectors. The motor cannot face downward; it’s cooled by the water being pumped. Do not run dry or use with solids.

Note: If flow control is needed, place valves or reducers on the discharge side; never restrict the inlet of a pump with a valve or reducer.

	Flow Rate, gpm							Intake			Discharge			Overall			Mounting
Max. Flow Rate, gpm	@ 10 ft. of Head	@ 20 ft. of Head	@ 30 ft. of Head	Max. ft. of Head	Max. Viscosity, cP	hp	Current, A	Pipe Size	Gender	Thread Type	Pipe Size	Gender	Thread Type	Lg.	Wd.	Ht.	No. of Holes	Hole Dia.		Each
120V AC, Single Phase
Hardwire
34	26	17	5	34	1	1/6	2	3/4	Female	NPT	3/4	Female	NPT	7 3/4"	6 1/2"	6"	2	1/2"	00000000	0000000
34	26	17	5	34	1	1/6	2	1	Female	NPT	1	Female	NPT	7 3/4"	6 1/2"	6"	2	1/2"	00000000	000000
34	26	17	5	34	1	1/6	2	1 1/4	Female	NPT	1 1/4	Female	NPT	7 3/4"	6 1/2"	6"	2	1/2"	00000000	000000
34	26	17	5	34	1	1/6	2	1 1/2	Female	NPT	1 1/2	Female	NPT	7 3/4"	6 1/2"	6"	2	1/2"	00000000	000000
240V AC, Single Phase
Hardwire
34	26	17	5	34	1	1/6	1.06	3/4	Female	NPT	3/4	Female	NPT	7 1/2"	6 1/2"	6"	2	1/2"	00000000	000000
34	26	17	5	34	1	1/6	1.06	1	Female	NPT	1	Female	NPT	7 1/2"	6 1/2"	6"	2	1/2"	00000000	000000
34	26	17	5	34	1	1/6	1.06	1 1/4	Female	NPT	1 1/4	Female	NPT	7 1/2"	6 1/2"	6"	2	1/2"	00000000	000000
34	26	17	5	34	1	1/6	1.06	1 1/2	Female	NPT	1 1/2	Female	NPT	7 1/2"	6 1/2"	6"	2	1/2"	00000000	000000

Easy-Maintenance Inline Circulation Pumps for Water

A detachable motor assembly allows you to leave these pumps inline while servicing or repairing the motor. The motor is open dripproof (ODP) for use in clean, dry, and well-ventilated environments. Install these pumps directly in your pipeline for applications such as hot-water circulation and hydronic heating and cooling. Mount horizontally or vertically with the included pipe connectors. Do not run dry or use with solids.

Note: If flow control is needed, place valves or reducers on the discharge side; never restrict the inlet of a pump with a valve or reducer.

							Intake			Discharge			Overall
Max. Flow Rate, gpm	Flow Rate @ 10 ft. of Head, gpm	Max. ft. of Head	Max. Temp., °F	Max. Viscosity, cP	hp	Current, A	Pipe Size	Gender	Thread Type	Pipe Size	Gender	Thread Type	Lg.	Wd.	Ht.		Each
120V AC, Single Phase—With Thermal Overload Protection
Hardwire
75	22	10	225°	1	1/6	1.9	1	Female	NPT	1	Female	NPT	15 3/8"	5 1/4"	8 1/2"	0000000	000000000
75	22	10	225°	1	1/6	1.9	1 1/4	Female	NPT	1 1/4	Female	NPT	15 3/8"	5 1/4"	8 1/2"	0000000	00000000
75	22	10	225°	1	1/6	1.9	1 1/2	Female	NPT	1 1/2	Female	NPT	15 3/8"	5 1/4"	8 1/2"	0000000	00000000

Easy-Carry Water-Removal Pumps without Switch

These pumps activate when plugged in. You can add a plug-in switch to control when the pump activates. Use the handle to carry pumps from job to job. Install in debris-free water that’s at least 3/4" deep. Pumps are gravity fed and require an elevated liquid source to fully fill the pump before turning on. Do not run dry.

Max. Flow Rate, gpm									Discharge			Overall
@ 5 Ft. of Head	@ 10 Ft. of Head	@ 15 Ft. of Head	@ 20 Ft. of Head	Max. Ft. of Head, ft.	Removes Water Down To	Temp. Range, °F	Horsepower	Current, A	Pipe Size	Thread Type	Gender	Ht.	Wd.	Lg.		Each
115V AC, Single Phase—With Thermal Overload Protection
Plug with 10 ft. Cord
23	20	14	9	26	1/8"	35° to 120°	1/6 hp	2	1	NPT	Female	8"	6"	4.3"	00000000	0000000
Plug with 25 ft. Cord
18	17	14	9	26.3	1/8"	35° to 120°	1/6 hp	5	1	NPT	Female	8"	7"	5"	00000000	000000

Long-Life Easy-Carry Water-Removal Pumps

The switch activates on increasing pressure caused by rising water levels for a long service life. It has a separate cord, so you can replace the switch without replacing the whole pump. Use the handle to carry pumps from job to job. Install in debris-free water that’s at least 3/4" deep. Pumps are gravity fed and require an elevated liquid source to fully fill the pump before turning on. Do not run dry.

Max. Flow Rate, gpm					Level					Discharge			Overall
@ 5 Ft. of Head	@ 10 Ft. of Head	@ 20 Ft. of Head	Max. Ft. of Head, ft.	Removes Water Down To	Turn-On	Turn-Off	Temp. Range, °F	Horsepower	Current, A	Pipe Size	Thread Type	Gender	Ht.	Wd.	Lg.		Each
120V AC, Single Phase—With Thermal Overload Protection
Plug with 10 ft. Cord
23	19	8	26	1/8"	9"	4"	35° to 120°	1/6 hp	2	1	NPT	Female	8"	8"	5"	00000000	0000000
Plug with 18 ft. Cord
23	19	8	26	1/8"	3"	1 1/2"	35° to 120°	1/6 hp	2	1	NPT	Female	8"	8"	5"	00000000	000000

Oil-Free Electric Vacuum Pumps

Generate a vacuum with no risk of oil contamination in your system. These pumps can also create compressed air for powering tools and controlling fluid motion. In vacuum generation, the maximum flow rate is the rate at which air is pumped before a vacuum is created. Flow rate steadily decreases as the pump generates the vacuum. The larger the tank, the longer it will take to form a vacuum.

Style A pumps withstand harsh operating conditions. Use them to service machinery, refrigeration systems, and circulation systems. As compressors, they can power pneumatic tools.

Threaded connections are secure and leak resistant. They’re ideal for permanent or semi-permanent installations.

115V AC, Single Phase—With Thermal Overload Protection

								Intake				Discharge				O'all
Style	Max. Vacuum, in. of Hg	Max. Flow Rate, cfm	Max. Pressure, psi	Temp. Range, °F	Volume, dBA	Horsepower	Current, A	Connection Style	Pipe Size	Thread Type	Gender	Connection Style	Pipe Size	Thread Type	Gender	Lg.	Wd.	Ht.		Each
NEMA 5-15 Plug
A	27.5	1.75	50	35° to 100°	70	1/6 hp	3.5	Threaded	1/4	NPT	Female	Threaded	1/4	NPT	Female	11 1/2"	5 5/8"	8 5/8"	000000	0000000

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