McMaster-Carr logo
    Filter by
    For Use With
    Maximum Flow Rate @ 25 psi
    For Motor Power Source
    Shaft Diameter
    Attribute Image
    Power Source
    Housing Material
    Required Horsepower @ 100 psi
    Pipe Size
    Industrial Info Compare
    Intake Pipe Size
    Industrial Info Compare
    Discharge Pipe Size
    Industrial Info Compare
    Gender
    Intake Connection Port
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    4 Products

    Constant-Flow-Rate Gear Pumps without Motor for Oil

    Image of Product. Front orientation. Gear Pumps. Constant-Flow-Rate Gear Pumps without Motor for Oil.
    A cast iron housing and steel gears allow these gear 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. 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.
    Required
    hp, hp
    Intake (NPT)
    Discharge (NPT)
    Overall
    Shaft
    Max. Flow Rate @
    25 psi, gpm
    Max. Flow
    Rate
    Max. ft. of
    Head, ft.
    Max. Pressure,
    psi
    Max. Viscosity,
    cP
    Temp. Range,
    ° F
    @ 25
    psi
    @ 100
    psi
    Pipe
    Size
    Connection
    Gender
    Pipe
    Size
    Connection
    Gender
    Lg.
    Wd.
    Ht.
    Dia.
    Lg.
    Ctr.-to-Base
    Lg.
    Each
    For 1,725 rpm Maximum Motor Speed
    8.99 gpm46220020,000-20 to 4003/411/2
    		ThreadedFemale1/2
    		ThreadedFemale7 1/4"3 7/16"4 1/2"5/8"1 9/16"3"41915K72000000000
     

    Constant-Flow-Rate Gear Pumps without Motor for Chemicals

    Image of Product. Front orientation. Gear Pumps. Constant-Flow-Rate Gear Pumps without Motor for Chemicals.
    With a 316 stainless steel housing and stainless steel gears, these gear 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. 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.
    Required
    hp, hp
    Intake (NPT)
    Discharge (NPT)
    Overall
    Shaft
    Max. Flow Rate @
    25 psi, gpm
    Max. Flow
    Rate
    Max. ft. of
    Head, ft.
    Max. Pressure,
    psi
    Max. Viscosity,
    cP
    Temp. Range,
    ° F
    @ 25
    psi
    @ 100
    psi
    Pipe
    Size
    Connection
    Gender
    Pipe
    Size
    Connection
    Gender
    Lg.
    Wd.
    Ht.
    Dia.
    Lg.
    Ctr.-to-Base
    Lg.
    Each
    For 1,800 rpm Maximum Motor Speed
    4.34 gpm346.315020,000-50 to 4501/43/41/2
    		ThreadedFemale1/2
    		ThreadedFemale6 1/4"3"3 3/4"1/2"1 1/4"2 5/8"43095K47000000000
    10.210 gpm346.315020,000-50 to 4501/21 1/23/4
    		ThreadedFemale3/4
    		ThreadedFemale7 1/2"3 3/8"4 3/8"5/8"1 3/4"3"43095K5200000000
     

    Air-Powered Constant-Flow-Rate Piston Pumps

    Image of Product. Front orientation. Piston Pumps. Air-Powered Constant-Flow-Rate Piston 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.
    Air
    Pressure, psi
    Overall
    Flow Rate
    @ 0 psi, gpm
    Max. ft. of
    Head, ft.
    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
    4.763,6791,59510015145451/2 Female1 Female1/2 Female10 3/4"9 1/2"10 3/8"6770K28000000000
     
    back to top