Hydropneumatic Tanks

Design, create, and deliver hydropneumatic tanks with the Midwest Tank team.

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Your Guide For Hydropneumatic Tanks

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Midwest Tank Co. manufactures hydropneumatics storage tanks to maintain on-demand pressurized water without the continuous use of a pump.  By regulating system pressures, hydropneumatics tanks provide efficient water supply to quickly meet system demand. Our standard interior lining for hydropneumatic tanks is a TNEMEC Series 21 epoxy. This is an NSF approved coating and is used throughout the industry for protection in cold water applications. This coating requires an SSPC-SP 10 near-white blast. All tank exteriors shall be primed. Alternate linings and coatings are available. All tanks are ASME labeled and are available in 100, 125, and 150 PSI design pressures.

We custom build our Hydropneumatic tanks to meet your job requirements.  See below for some of our more common sizes.

Hydropneumatic Tanks 1057
Hydropneumatic Tanks 1023

How Hydropneumatic Tanks Work

Hydropneumatic tanks regulate water pressure by storing water and compressed air in the same vessel. As water is drawn from the system, the air pressure inside the tank helps push water into the piping network, maintaining consistent pressure without the pump needing to run continuously. This setup reduces pump cycling, prevents water hammer, and improves the overall efficiency and lifespan of your water system.

Item # Capacity Diameter Overall Height
HP4854 513 gal 48 in 78 in
HP4860 560 gal 48 in 84 in
HP4872 654 gal 48 in 96 in
HP4884 748 gal 48 in 108 in
HP4896 842 gal 48 in 120 in
HP48120 1030 gal 48 in 144 in
HP48144 1218 gal 48 in 168 in
HP48168 1406 gal 48 in 192 in
HP5460 712 gal 54 in 87 in
HP5472 840 gal 54 in 99 in
HP5484 959 gal 54 in 111 in
HP5496 1078 gal 54 in 123 in
HP54120 1316 gal 54 in 147 in
HP54144 1554 gal 54 in 171 in
HP54168 1792 gal 54 in 195 in
HP6060 912 gal 60 in 90 in
HP6072 1059 gal 60 in 102 in
HP6084 1206 gal 60 in 114 in
HP6096 1353 gal 60 in 126 in
HP60120 1647 gal 60 in 150 in
HP60144 1941 gal 60 in 174 in
HP60168 2235 gal 60 in 198 in
HP6660 1134 gal 66 in 88 in
HP6672 1312 gal 66 in 100 in
HP6684 1490 gal 66 in 112 in
HP6696 1668 gal 66 in 124 in
HP66120 2023 gal 66 in 148 in
HP66144 2379 gal 66 in 172 in
HP66168 2735 gal 66 in 196 in
HP66192 3091 gal 66 in 220 in
HP7260 1439 gal 72 in 96 in
HP7272 1651 gal 72 in 108 in
HP7284 1863 gal 72 in 120 in
HP7296 2075 gal 72 in 132 in
HP72120 2499 gal 72 in 156 in
HP72144 2932 gal 72 in 180 in
HP72168 3344 gal 72 in 204 in
HP72192 3767 gal 72 in 228 in
HP72216 4190 gal 72 in 252 in
HP72240 4613 gal 72 in 276 in
HP72264 5036 gal 72 in 300 in
HP72288 5460 gal 72 in 324 in
HP7896 2613 gal 78 in 140 in
HP78144 3609 gal 78 in 188 in
HP78192 1604 gal 78 in 236 in
HP8496 3070 gal 84 in 143 in
HP84144 4222 gal 84 in 191 in
HP84192 5373 gal 84 in 239 in
HP84288 7676 gal 84 in 335 in
HP9096 3579 gal 90 in 146 in
HP90192 6223 gal 90 in 242 in
HP90288 8867 gal 90 in 338 in
HP90384 11510 gal 90 in 434 in

Advantages of Using a Hydropneumatic Tank

A properly designed hydropneumatic tank provides multiple operational and cost-saving benefits:

  • Reduced Pump Wear –Limits the frequency of pump starts and stops, extending equipment life.
  • Stable System Pressure – Minimizes pressure fluctuations to protect sensitive equipment and piping.
  • Energy Efficiency – Decreases energy use by reducing unnecessary pump operation.
  • Improved Water Supply Response – Ensures water is available instantly when demand peaks.
  • Flexible Design – Can be tailored to fit municipal, commercial, or industrial water systems.

    Industries & Applications

    Hydropneumatic tanks are essential wherever consistent water pressure and reliable supply are needed. Midwest Tank Company builds tanks for:

    • Municipal Water Systems –Ensuring steady pressure for residential and commercial distribution.
    • Commercial Buildings – Supporting high-demand plumbing systems in hotels, hospitals, and office complexes.
    • Industrial Facilities – Providing reliable water supply for process cooling, manufacturing, or fire suppression.
    • Irrigation & Agriculture – Delivering consistent pressure for crop watering systems and livestock operations.

      FAQs

      What is a Hydropneumatic Tank?

      A hydropneumatic tank is a pressurized water storage vessel that uses compressed air to maintain consistent water pressure in a distribution system. It prevents pumps from running continuously by storing both water and air in a controlled environment.

      What Coatings are Used Inside Hydropneumatic Tanks?

      Midwest Tank Company’s standard interior lining is TNEMEC Series 21 epoxy, an NSF-approved coating ideal for cold water applications. Alternative linings and coatings are available based on water chemistry and environmental requirements.

      How Do I Size a Hydropneumatic Tank?

      Tank sizing depends on pump capacity, desired pressure range, water demand, and system layout.

      Ready to Design Your Hydropneumatic Tank?

      Whether you need a standard-size vessel or a fully customized hydropneumatic tank built to your specifications. Midwest Tank Company delivers quality ASME-certified and will provide a detailed drawing for approval before production.

      Contact our team today to discuss your project, request a quote, or submit your system specifications. We’ll help you get the right hydropneumatic tank to keep your water system running efficiently and safely.