How to Prime Your Pump
More
How to Determine Feet of Head
More
About Process Pumps
More
Constant-Flow-Rate Pumps without Motor for Oil
A cast iron housing and steel gears allow these pumps to be used to dispense oil and fuel such as hydraulic oil and diesel fuel. Select your own motor to tailor them to your application. Use an air or electric motor with a coupling and belt/pulley drive. Also known as gear pumps, they produce a smooth flow of liquid for applications such as engine lubrication. All are self-priming, which means they create a suction force to draw liquid upward and fill the pump chamber. Do not use with solids.
Note: Pumps must be filled with liquid before use. They need a constant flow of liquid and cannot run dry.
For technical drawings and 3-D models, click on a part number.
Required hp | Intake | Discharge | Overall | Shaft | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. Flow Rate @ 25 psi, gpm | Max. Flow Rate, gpm | Max. ft. of Head | Max. Viscosity, cP | @ 25 psi | @ 100 psi | Pipe Size  | Thread Type | Gender | Pipe Size | Thread Type | Gender | Lg. | Wd. | Ht. | Dia. | Lg. | Center-to-Base Lg. | Each | |
| 8.9 | 9 | 462 | 20,000 | 3/4 | 1 | 1/2 | NPT | Female | 1/2 | NPT | Female | 7 1/4" | 3 7/16" | 4 1/2" | 5/8" | 1 9/16" | 3" | 00000000 | 000000000 |
Constant-Flow-Rate Pumps without Motor for Chemicals
With a 316 stainless steel housing and stainless steel gears, these pumps are often used to dispense chemicals such as ethylene glycol, isopropyl alcohol, and nitric acid. Use an electric motor with a coupling and belt/pulley drive. Also known as gear pumps, they produce a smooth flow of liquid. All are self-priming, which means they create a suction force to draw liquid upward and fill the pump chamber. Do not use with solids.
For technical drawings and 3-D models, click on a part number.
Required hp | Intake (NPT) | Discharge (NPT) | Overall | Shaft | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. Flow Rate @ 25 psi, gpm | Max. Flow Rate, gpm | Max. ft. of Head | Max. Pressure, psi | Max. Viscosity, cP | @ 25 psi | @ 100 psi | Pipe Size | Gender | Pipe Size | Gender | Lg. | Wd. | Ht. | Dia. | Lg. | Center-to-Base Lg. | Each | |
| 4.3 | 4 | 346.3 | 150 | 20,000 | 1/4 | 3/4 | 1/2 | Female | 1/2 | Female | 6 1/4" | 3" | 3 3/4" | 1/2" | 1 1/4" | 2 5/8" | 00000000 | 000000000 |
| 10.2 | 10 | 346.3 | 150 | 20,000 | 1/2 | 1 1/2 hp | 3/4 | Female | 3/4 | Female | 7 1/2" | 3 3/8" | 4 3/8" | 5/8" | 1 3/4" | 3" | 00000000 | 00000000 |
Self-Priming Circulation Pumps without Motor for Oil
Use these pumps to move lubricating oil such as hydraulic and motor oil. Also known as flexible impeller pumps, they create a suction force that can draw liquid upward to fill the pump chamber when your liquid source is below the pump. The impeller resists clogging and wear. Select a spark-free air motor for hazardous environments or attach an electric motor with a speed reducer or a belt pulley to alter the pump speed.
Repair kits (sold separately) include components such as impellers, O-rings, and seal lips.
Note: Pumps must be filled with liquid before use. They need a constant flow of liquid and cannot run dry.
For technical drawings and 3-D models, click on a part number.
Intake (NPT) | Discharge (NPT) | Shaft | Overall | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. Flow Rate, gpm | Max. Ft. of Head, ft. | Max. Pressure, psi | Max. Viscosity | Temp. Range, °F | Required hp | Gender | Pipe Size | Gender | Pipe Size | Dia. | Lg. | Ctr.-to-Base Lg. | Ht. | Lg. | Wd. | Each | |
For 500 rpm-2,100 rpm Motor Speed | |||||||||||||||||
| 11.5 | 50 | 21 | Not Rated | 50° to 180° | 1/3 hp | Female | 1/2 | Female | 1/2 | 5/8" | 1 1/8" | 1 15/16" | 3 13/16" | 4 1/2" | 4 1/8" | 0000000 | 0000000 |
| 25 | 50 | 26 | Not Rated | 50° to 180° | 3/4 hp | Female | 1 | Female | 1 | 5/8" | 2 1/4" | 1 7/8" | 3 9/16" | 6 3/8" | 4 3/4" | 0000000 | 000000 |
Air-Powered Constant-Flow-Rate Pumps
Commonly called piston pumps, these are often used in high-pressure applications, such as hydrostatic testing of pipelines, tanks, and valves. Flow and outlet liquid pressure can be controlled by varying the air pressure. To calculate discharge liquid pressure, multiply the air pressure by the ratio shown in the table. Pumps are self-priming, which means they create a suction force to draw liquid upward to fill the pump chamber.
Note: Pumps must be filled with liquid before use. They need a constant flow of liquid and cannot run dry.
For technical drawings and 3-D models, click on a part number.
Flow Rate, gpm | Air Pressure, psi | Overall | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| @ 0 psi | Max. ft. of Head | Max. Discharge Pressure, psi | Max. Viscosity, cP | Min. | Max. | Air Consumption, scfm | Air Connection (NPT) | Intake Pipe Connection (NPT) | Discharge Pipe Connection (NPT) | Lg. | Wd. | Ht. | Each | |
11:1 Discharge Liquid to Inlet Air Pressure Ratio | ||||||||||||||
| 4.76 | 3,679 | 1,595 | 100 | 15 | 145 | 45 | 1/2 Female | 1 Female | 1/2 Female | 10 3/4" | 7" | 12 1/4" | 0000000 | 000000000 |