How to Prime Your Pump
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How to Determine Feet of Head
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About Process Pumps
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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 | ||||||||||||||||||||
| 31 | 22 | 13 | 5 | 32 | 1 | 1/8 | 1.76 | 3/4 | Female | NPT | 3/4 | Female | NPT | 7 5/8" | 6 1/2" | 6" | 2 | 1/2" | 00000000 | 0000000 |
| 31 | 22 | 13 | 5 | 32 | 1 | 1/8 | 1.76 | 1 | Female | NPT | 1 | Female | NPT | 7 5/8" | 6 1/2" | 6" | 2 | 1/2" | 0000000 | 000000 |
| 31 | 22 | 13 | 5 | 32 | 1 | 1/8 | 1.76 | 1 1/4 | Female | NPT | 1 1/4 | Female | NPT | 7 5/8" | 6 1/2" | 6" | 2 | 1/2" | 00000000 | 000000 |
| 31 | 22 | 13 | 5 | 32 | 1 | 1/8 | 1.76 | 1 1/2 | Female | NPT | 1 1/2 | Female | NPT | 7 5/8" | 6 1/2" | 6" | 2 | 1/2" | 0000000 | 000000 |
| 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 | 000000 |
| 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 | ||||||||||||||||||||
| 15 | 8 | __ | __ | 15 | 1 | 1/25 | 0.46 | 3/4 | Female | NPT | 3/4 | Female | NPT | 6" | 6 3/8" | 4 3/4" | 2 | 1/2" | 00000000 | 000000 |
| 15 | 8 | __ | __ | 15 | 1 | 1/25 | 0.46 | 1 | Female | NPT | 1 | Female | NPT | 6" | 6 3/8" | 4 3/4" | 2 | 1/2" | 00000000 | 000000 |
| 15 | 8 | __ | __ | 15 | 1 | 1/25 | 0.46 | 1 1/4 | Female | NPT | 1 1/4 | Female | NPT | 6" | 6 3/8" | 4 3/4" | 2 | 1/2" | 00000000 | 000000 |
| 15 | 8 | __ | __ | 15 | 1 | 1/25 | 0.46 | 1 1/2 | Female | NPT | 1 1/2 | Female | NPT | 6" | 6 3/8" | 4 3/4" | 2 | 1/2" | 00000000 | 000000 |
| 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 |
Adjustable-Flow Inline Circulation Pumps for Water
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 |
| 7 (1), 13 (2), 18 (3) | 2 (1), 6 (2), 9 (3) | __ | 0.5 (1), 0.6 (2), 0.8 (3) | ± 10% | 18 | 1 | 1/8 | 1 | 1 | 6" | 5" | 6 3/8" | 0000000 | 000000 |
| 7 (1), 13 (2), 18 (3) | 2 (1), 6 (2), 9 (3) | __ | 0.5 (1), 0.6 (2), 0.8 (3) | ± 10% | 18 | 1 | 1/8 | 1 1/4 | 1 1/4 | 6" | 5" | 6 3/8" | 00000000 | 000000 |
| 7 (1), 13 (2), 18 (3) | 2 (1), 6 (2), 9 (3) | __ | 0.5 (1), 0.6 (2), 0.8 (3) | ± 10% | 18 | 1 | 1/8 | 1 1/2 | 1 1/2 | 6" | 5" | 6 3/8" | 0000000 | 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 |
| 7 (1), 13 (2), 18 (3) | 2 (1), 6 (2), 9 (3) | __ | 0.5 (1), 0.6 (2), 0.8 (3) | ± 10% | 18 | 1 | 1/8 | 1 | 1 | 6" | 5" | 6 3/8" | 00000000 | 000000 |
| 7 (1), 13 (2), 18 (3) | 2 (1), 6 (2), 9 (3) | __ | 0.5 (1), 0.6 (2), 0.8 (3) | ± 10% | 18 | 1 | 1/8 | 1 1/4 | 1 1/4 | 6" | 5" | 6 3/8" | 00000000 | 000000 |
| 7 (1), 13 (2), 18 (3) | 2 (1), 6 (2), 9 (3) | __ | 0.5 (1), 0.6 (2), 0.8 (3) | ± 10% | 18 | 1 | 1/8 | 1 1/2 | 1 1/2 | 6" | 5" | 6 3/8" | 00000000 | 000000 |
| 30 (1), 45 (2), 52 (3) | 2 (1), 18 (2), 25 (3) | __ | 1.4 (1), 1.6 (2), 1.9 (3) | ± 10% | 14 | 1 | 1/3 | 1 | 1 | 6 5/8" | 5 1/2" | 8 1/2" | 00000000 | 000000 |
| 30 (1), 45 (2), 52 (3) | 2 (1), 18 (2), 25 (3) | __ | 1.4 (1), 1.6 (2), 1.9 (3) | ± 10% | 14 | 1 | 1/3 | 1 1/4 | 1 1/4 | 6 5/8" | 5 1/2" | 8 1/2" | 00000000 | 000000 |
| 30 (1), 45 (2), 52 (3) | 2 (1), 18 (2), 25 (3) | __ | 1.4 (1), 1.6 (2), 1.9 (3) | ± 10% | 14 | 1 | 1/3 | 1 1/2 | 1 1/2 | 6 5/8" | 5 1/2" | 8 1/2" | 00000000 | 000000 |
240V AC, Single Phase—Without Thermal Overload Protection | ||||||||||||||
Cast Iron Housing—Hardwire | ||||||||||||||
| 19 (1), 28 (2), 30 (3) | 7 (1), 19 (2), 23 (3) | 2 (1), 10 (2), 13 (3) | 0.8 (1), 0.85 (2), 0.9 (3) | ± 6% | 31 | 1 | 1/4 | 1 | 1 | 6 3/8" | 5 1/2" | 6 1/2" | 00000000 | 000000 |
| 19 (1), 28 (2), 30 (3) | 7 (1), 19 (2), 23 (3) | 2 (1), 10 (2), 13 (3) | 0.8 (1), 0.85 (2), 0.9 (3) | ± 6% | 31 | 1 | 1/4 | 1 1/4 | 1 1/4 | 6 3/8" | 5 1/2" | 6 1/2" | 00000000 | 000000 |
| 19 (1), 28 (2), 30 (3) | 7 (1), 19 (2), 23 (3) | 2 (1), 10 (2), 13 (3) | 0.8 (1), 0.85 (2), 0.9 (3) | ± 6% | 31 | 1 | 1/4 | 1 1/2 | 1 1/2 | 6 3/8" | 5 1/2" | 6 1/2" | 00000000 | 000000 |
304 Stainless Steel Housing—Hardwire | ||||||||||||||
| 19 (1), 28 (2), 30 (3) | 7 (1), 19 (2), 23 (3) | 2 (1), 10 (2), 13 (3) | 0.8 (1), 0.85 (2), 0.9 (3) | ± 6% | 31 | 1 | 1/4 | 1 | 1 | 6 3/8" | 5 1/2" | 6 1/2" | 00000000 | 000000 |
| 19 (1), 28 (2), 30 (3) | 7 (1), 19 (2), 23 (3) | 2 (1), 10 (2), 13 (3) | 0.8 (1), 0.85 (2), 0.9 (3) | ± 6% | 31 | 1 | 1/4 | 1 1/4 | 1 1/4 | 6 3/8" | 5 1/2" | 6 1/2" | 00000000 | 000000 |
| 19 (1), 28 (2), 30 (3) | 7 (1), 19 (2), 23 (3) | 2 (1), 10 (2), 13 (3) | 0.8 (1), 0.85 (2), 0.9 (3) | ± 6% | 31 | 1 | 1/4 | 1 1/2 | 1 1/2 | 6 3/8" | 5 1/2" | 6 1/2" | 00000000 | 000000 |
Extended-Life Inline Circulation Pumps for Water
Eliminate seal wear and leakage—these pumps have magnets that turn the impeller for a long service life. Install them directly in your pipeline for applications such as hot-water circulation and hydronic heating and cooling. Mount vertically or horizontally; the electrical conduit box must be placed on the bottom. 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.
For technical drawings and 3-D models, click on a part number.
Flow Rate, gpm | Intake | Discharge | Overall | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. Flow Rate, gpm | @ 5 ft. of Head | @ 10 ft. of Head | Max. ft. of Head | Max. Pressure, psi | Max. Viscosity, cP | Temp. Range, °F | 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 | |||||||||||||||||||
| 4 | __ | __ | 4.3 | 150 | 1 | 35° to 250° | 1/100 | 0.5 | 1/2 | Male | NPT | 1/2 | Male | NPT | 5 3/8" | 3 3/8" | 6 5/8" | 0000000 | 0000000 |
| 6 | 5 | 3 | 12.1 | 150 | 1 | 35° to 250° | 1/25 | 1.4 | 1/2 | Male | NPT | 1/2 | Male | NPT | 5 3/8" | 3 3/8" | 7 3/4" | 0000000 | 000000 |
High-Flow Extended-Life Inline Circulation Pumps for Water
These pumps have higher flow rate than other inline circulation pumps and are cooled by the liquid being pumped to extend the life of the motor. Install them directly in your pipeline for applications such as hot-water circulation and solar heating. Pumps have an open dripproof (ODP) motor for use in clean, dry, and well-ventilated environments. Mount horizontally with required pipe connectors (sold separately). 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.
To Order: For the required pipe connectors, please specify pipe size of 3/4, 1, 1 1/4, or 1 1/2.
For technical drawings and 3-D models, click on a part number.
Pumps | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Intake | Discharge | Overall | Required Pipe Connectors | |||||||||||||||
| Max. Flow Rate, gpm | Flow Rate @ 10 ft. of Head, gpm | Max. ft. of Head | Max. Pressure, psi | Max. Viscosity, cP | Temp. Range, °F | hp | Current, A | Gender | Thread Type | Gender | Thread Type | Lg. | Wd. | Ht. | Each | Pair | ||
120V AC, Single Phase—Without Thermal Overload Protection | ||||||||||||||||||
Hardwire | ||||||||||||||||||
| 22 | 8 | 15 | 150 | 1 | 40° to 230° | 1/25 | 0.8 | Female | NPT | Female | NPT | 5 5/8" | 4 7/8" | 6 3/8" | 0000000 | 0000000 | 000000 | 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 | |||||||||||||||||
| 33 | __ | 8 | 225° | 1 | Subfractional | 1.75 | 3/4 | Female | NPT | 3/4 | Female | NPT | 14 7/8" | 5" | 6 3/8" | 0000000 | 0000000 |
| 33 | __ | 8 | 225° | 1 | Subfractional | 1.75 | 1 | Female | NPT | 1 | Female | NPT | 14 7/8" | 5" | 6 3/8" | 0000000 | 000000 |
| 33 | __ | 8 | 225° | 1 | Subfractional | 1.75 | 1 1/4 | Female | NPT | 1 1/4 | Female | NPT | 14 7/8" | 5" | 6 3/8" | 0000000 | 000000 |
| 33 | __ | 8 | 225° | 1 | Subfractional | 1.75 | 1 1/2 | Female | NPT | 1 1/2 | Female | NPT | 14 7/8" | 5" | 6 3/8" | 0000000 | 000000 |
| 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 | 00000000 |
| 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 |