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H.A. Tenney and Company, Inc. has recently relocated its Houston offices.

Please make note of the new address, phone and fax numbers in your records.



H.A. Tenney and Company, Inc.

15299 Lake Lamond Rd.
Conroe, Tx 77384

Phone: 281.350.1200

Fax: 281.350.0101

email us

Jensen Series 400 Mixers are heavy duty, belt driven units designed for long life and trouble free operation. Jensen Mixers hang directly on your tank's manway (only). No need for additional equipment such as tie rods and/or a base (unlike our competition). Jensen Mixers' short shaft design (which is supported both at the front and rear of the shaft) provides for vibration-free service. This ensures a long life to the mixer's mechanical seal, gearbox, bearings etc. Only Jensen Mixer provides you with a (mixer) propeller custom pitched for your application. Jensen Mixer has well over 15,000 mixers in service today. Go with Jensen and get unequaled experience, time proven designs that out-perform and out-last all of our competitors.

Standard Features Include:
  • Shaft and wear sleeve - Stainless Steel
  • Lock ring, lock bushing, & seal housing - 316 Stainless Steel
  • Drive Yoke - 356-T6 Aluminum
  • Propeller- Cast Carbon Steel
  • O Rings - Viton "A"

Jensen Mixers Series 400

Belt Driven Side Entry Mixer for Sediment Control and Blending Applications
The innovative design of the Jensen 400 Series Mixer allows for low maintenance operation and constant belt alignment resulting in reduced maintenance costs and higher productivity in all applications. The rugged belt drive train in the Series 400 Mixers is designed for long life and maximum reliability. Recent advances in belt technology have largely eliminated the need for frequent belt inspection and adjustment.
  • Low maintenance operation
  • Low Noise Design
  • Reduces Maintenance Costs
The exclusive Jensen Pitch-Adjusted propeller is a highly efficient, three blade, marine type propeller precision set and permanently fixed at our factory to assure superior mixing performance in each individual application.
  • The dependable prop Jensen design relies on 55 years of proven performance.
  • The Powerful energy distribution creates predictable flow patterns and efficient temperature uniformity over a large area.
  • Low energy requirements reduces overall costs
The Jensen Mechanical Seal is an integral part of every Series 400 Mixer and is designed for long life at low cost. Materials of construction were especially selected to suite petroleum applications.
  • Long lasting design with options available
  • Standard Carbon vs. NiResist or SiC
  • TC vs. SiC for more abrasive surfaces
  • Tungsten Carbide inner tube seal provides dependable low maintenance operation
The three sizes in this series are shown in the table below. For petroleum services. Maximum horse power 50 & belt driven.
MODEL 420 450 480
HORSEPOWER (MAX.) 10 30 60
SHAFT R.P.M. 433 440 427
CRITICAL SPEED* 2,360 RPM 1,960 RPM 2,520 RPM


Series 400 Fixed Angle for Blending Application
Series 400 Vari-Angle for Cleaning Applications
Defining your requirements and selecting the right mixer to do the job is most important. Jensen offers a mixer specifically tailored to every need.
Mixer applications can be separated into two categories:
  1. BLENDING - Mixing two or more fluids. Select the Jensen Model 400 Fixed-Angle Mixer.
  2. CLEANING - Removing sediment accumulations from tank bottoms. Select the Jensen Model 400-VA Vari-Angle Mixer.

In cases where both services are required, the Vari-Angle should be selected.

Jensen process recommendations are fully guaranteed. Jensen mixers are guaranteed against defects for 12 months.



    Brink Mist Eliminators
    Jensen Mixers
       Series 400 Mixers
       Series 400 for Blending
       Series 400 for Cleaning
       Series 500 Mixers
       Series 500 Propeller
       Series 500 Gearbox
       Series 500 Seal
       Series 500 Drive Train
       Series 500 for Asphalt
       Series 600 Mixers
       Series 600 Propeller
       Series 600 Gearbox
       Series 600 Seal
       Series 600 for Blending
       Series 600 for Cleaning
       Vari-Angle Dimensions
       Fixed-Angle Dimensions
       Vari Angle Mixers
    DynaWave Scrubbers
    ZeCorTM Stainless Steel
    Mondi Piping
    Sulfuric Acid Catalyst
    Tower Packings, Random and
    Tower Internals
    Mass Transfer Trays
    Thermal Oxidizers
    Wet ESP's
    Sperry Filter Presses
    Turnkey Solutions
    Air Preheaters
    Metalworking Oil Mist
    Ceramic Tower Packing
    Indoor Air Quality
    Acid Plant Damper Valves
    Specialty Damper Valves
    Gate Valves
    Open Channel
    Acid Plant Tower
     and Converter Internals

    Lewis Pumps
    El Dorado Metals
    Catalyst Support Media, HiDur
      Inert Ceramic Balls
    Precision Screen



H.A. Tenney welcomes the opportunity to use our training and expertise to serve you and your company.

If you have questions or would like detailed information on any of the products we sell or service, contact us anytime.


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