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 T55M RO Storage Tank, 5.5 Gal, Pressurized, White

iSpring T55M RO Storage Tank, 5.5 Gal, Pressurized, White

Product ID: 164799426

Details

Brand
iSpring
Capacity
5.5 gallons
Included components
User Manual
Installation type
Under Sink
Material
Metal tank
Package information
Can

💧5.5 gal high-capacity tank

🔩Stainless steel 1/4" NPT valve thread

⚙️Pre-pressurized 7-10 psi ready-to-use

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Description

💧 Elevate your hydration game with iSpring’s powerhouse RO storage tank!

VERSATILE INSTALLATION - Works efficiently in both vertical and horizontal positions to fit your under-sink setup perfectly.
SPACIOUS 5 5 GALLON CAPACITY - Store more purified water and never run dry during busy days.
DURABLE STAINLESS STEEL VALVE - Corrosion-resistant 1/4" NPT valve with included ball valve for secure, leak-free operation.
PRE PRESSURIZED FOR INSTANT FLOW - 7-10 psi pressure ensures water is ready when you are—no waiting, no hassle.
PREMIUM FOOD GRADE BUTYL DIAPHRAGM - Taste and odor-free water chamber keeps your hydration pure and fresh.

The iSpring T55M is a 5.5-gallon pressurized reverse osmosis storage tank featuring a food-grade butyl diaphragm for pure, tasteless water. Pre-pressurized between 7-10 psi and equipped with a stainless steel 1/4" NPT valve and ball valve, it ensures reliable, leak-free water delivery. Designed for versatile vertical or horizontal installation, this NSF-certified metal tank is a durable, high-capacity solution for under-sink RO systems.

Specifications

ASIN	B01CES39N0
Best Sellers Rank	30,470 in DIY & Tools ( See Top 100 in DIY & Tools ) 13 in Under-Sink Filters
Brand	iSpring
Capacity	5.5 gallons
Container Type	Can
Country Of Origin	China
Customer Reviews	4.6 4.6 out of 5 stars (5,521)
Global Trade Identification Number	00662425080236
Included Components	User Manual
Installation Type	Under Sink
Item Dimensions L x W x H	28L x 28W x 42H centimetres
Item Highlight	For reverse osmosis systems. High-capacity storage.
Item Type Name	Pre-Pressurized Water Storage Tank for Reverse Osmosis (RO) Systems
Item Weight	4.3 Kilograms
LowerTemperature Range	40 Degrees Fahrenheit
Manufacturer	iSpring Water Systems
Manufacturer Part Number	T55M
Material Type	Metal tank
Model Name	T55M 5.5 Gallon Residential
Model Number	T55M
Number of Items	1
Other Special Features of the Product	NSF certified
Power Source	Manual Operation
Purification Method	Reverse Osmosis
Supported Water TDS Level Maximum (PPM)	50
UPC	662425080236
Unit Count	1.0 count
Upper Temperature Rating	100 Degrees Fahrenheit

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1511.71 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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