Can I connect 2 tanks together for more water storage?

I put two 3.2 gal tanks together with a tee last month. It works fantastic!!

Anyone know if this will work for Whirlpool RO systems? The support rep told me any RO tank would work. Anyone use this for another system?

I don't think it matters what RO system you have. If it has the option for a reserve tank and the fitting works, then it should fill with water.

What is the pressure rating for the tank. Can it handle 60 psi?

Remember that the RO system water valve regulates the "internal" pressure, so the tank is not going to see the actual water line pressure. Most valves operate at 65%, so if your water line pressure is 60 psi, the pressure at the tank generally won't be more than 40 PSI. In most setups you'd need the pressure on the water line to be around 92 PSI to get 60 PSI on the tank.

What is the diameter of the 5.5 gal tank?

Thanks for the question! The diameter of the tank is 12" x 16" (H) Kindest, iSpring Team

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iSpring T32M Pressurized Water Storage Tank 4 Gallon

iSpring T32M Pressurized Water Storage Tank 4 Gallon

Product ID: 49353667

Details

Brand
iSpring
Capacity
3.2 gallons
Included components
RO Storage
Installation type
Under Sink
Material
Stainless
Package information
Bottle

💧4-gallon pressurized capacity

🔩Stainless steel 1/4" NPT valve

🛡️NSF/ANSI certified safety

€ 102.29

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Description

💧 Stay ahead with pure, pressurized perfection!

VERSATILE INSTALLATION - Works flawlessly in both vertical and horizontal positions—flexibility that fits your space and style.
CERTIFIED PURE PERFORMANCE - NSF/ANSI tested for tasteless, odorless water quality—because your health deserves the best.
GENEROUS 4 GALLON CAPACITY - Ample water storage to keep your reverse osmosis system running smoothly without constant refills.
DURABLE STAINLESS STEEL VALVE - 1/4" NPT valve ensures leak-proof, corrosion-resistant connections for long-term reliability.
PRE PRESSURIZED FOR INSTANT FLOW - Factory-set 7-10 psi pressure means water is ready when you are—no waiting, just hydration.

The iSpring T32M is a 4-gallon pressurized water storage tank designed for reverse osmosis systems. Featuring a food-grade butyl diaphragm and NSF/ANSI certification, it guarantees tasteless and odorless water. Equipped with a durable stainless steel 1/4" NPT valve and pre-pressurized between 7-10 psi, it offers reliable, leak-proof performance in both vertical and horizontal setups—perfect for modern under-sink installations.

Specifications

ASIN	B00439MYYE
Best Sellers Rank	47,657 in DIY & Tools ( See Top 100 in DIY & Tools ) 22 in Under-Sink Filters
Brand	iSpring
Capacity	3.2 gallons
Container Type	Bottle
Country Of Origin	China
Customer Reviews	4.6 4.6 out of 5 stars (5,537)
Global Trade Identification Number	00662425023684
Included Components	RO Storage Tank, Ball valve, User Manual
Installation Type	Under Sink
Item Dimensions L x W x H	18L x 15W x 27H centimetres
Item Highlight	For reverse osmosis systems. 1/4" tank valve included. Ball valve included.
Item Type Name	PAE
Item Weight	3.63 kg
LowerTemperature Range	40 Degrees Fahrenheit
Manufacturer	iSpring
Manufacturer Part Number	T32M
Material Type	Stainless Steel
Model Name	T32M
Model Number	FT32M
Number of Items	1
Number of Packs	1
Other Special Features of the Product	NSF certified
Power Source	Water Pressure
Purification Method	Reverse Osmosis
Supported Water TDS Level Maximum (PPM)	500
UPC	662425023684

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€ 102.29

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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Fantastic experience overall. Will recommend to friends and family.

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