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Home > Reverse Osmosis Storage Tanks > Amtrol RO Metal Pressurized Tanks

Amtrol (141S352) RO Steel Pressure Tank 4.4 Gallon 1/4" NPT Blue

Amtrol (141S352) RO Steel Pressure Tank 4.4 Gallon 1/4" NPT Blue


Retail Price:: $81.49

Your Savings:: $24.50

On sale: $65.87$56.99 On Sale


Availability: Ships within 24 hours

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AMTROL has been manufacturing Reverse Osmosis Water Storage Tanks for over 4 decades. Not only have we been doing it longer than anyone else, we actually invented the technology behind RO tanks.

Our proven technology, vast experience and countless other qualities are what place AMTROL high above other manufacturers with their look-alike tanks. Remember, looks can be deceiving. And in the end, you always get what you pay for.

Fully enclosed polypropylene and butyl water reservoir ensures water purity, and there's less rubber/water contact than with a bladder tank.

AMTROL?s pioneering diaphragm design provides longest life and most complete water discharge.


  • Made in USA
  • Unsurpassed customer service
  • Expert technical support
  • ISO Certified
  • All models NSF Listed
  • Industry's most comprehensive five-year warranty
  • AMTROL invented technology
  • 4 decades
  • CE
  • Fittings: 1/4"
  • Size: 4.4 Gallons
  • Storage Capacity: 2.8 Gallons
  • Dimensions: 11" Dia. x 15" Height


AMTROL RO Tank 4.4 gal
I purchased this as a replacement to the Chinese RO tank that came with my original RO kit. After much searching and comparison I bought "made in the USA" and used the $5.99 flat shipping option (great deal). Arrived earlier than the estimate and installed in minutes with no tools (in my instance, just unplugged the supply line from defunct tank and plugged it into the AMTROL tank, but check YOUR line diameter to confirm compatibility). I let the tank fill completely and then drained it to flush as directed. I have a 3 gal. jug that I can fill completely without having to let the tank recharge/ recover...something that I could not do with the OEM tank of the same size that came with my kit 4 years ago. Good vendor, good service, good price. I would purchase from Isopure water again.
Reviewed by: D. Bradford from AZ. on 2/7/2014
Absolutely incredible quality and the price out standing I will recommend you to anyone.
Reviewed by: Harry Ruiz from Naples, Florida. on 9/29/2013
It's working very well for a smaller tank. I have limited room so It's suits me fine.
Reviewed by: Peter Moore from Manley, Alaska 99756. on 5/5/2013
Applausable Customer Service
I am using this product for more than 3 years.The company's customer service is great and applausable.
Reviewed by: Sen Pag from Dallas, Texas. on 4/9/2012
Best than Others
AMTROL RO steel pressure tank is best product than other products in the field. I've had other brands in the past and they don't seem to last as long. The bladder always seems to burst but these guys make probably the best RO tanks on the market. HIGHLY RECOMMENDED
Reviewed by: Heck Pan from Dayton, Ohio. on 3/30/2012


Questions & Answers

Q: I noticed Amtrol's official website stated that the thank was Low lead instead of Lead Free, so which one is correct?
Asked by:  - 11/11/2013 (Submit an answer)
No Answers have been submitted yet.