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RO-132-W14 - White 3.2 Gallon Reverse Osmosis System Bladder Tank

Price $68.99 List Price Price $98.99 Save 30%
Availability: In Stock
The 3.2 Gallon Reverse Osmosis System Tank is the standard sized tank for most RO systems. The RO Tank has a 1/4-Inch NPT stainless steel connector at the top of the tank. The tank volume is 4.5 Gallons and the storage capacity is 3.2 Gallons. There is a 1/4-inch end that connects to the top of the RO tank. Purchase the BV-3890-AP ball valve if you have 3/8-inch tubing connected to your RO tank. Purchase the BV-1490-AP if you have 1/4-inch tubing connected to your RO tank. There is a side-mounted air valve for re-pressurizing the tank when needed. Replacement RO water accumulator tank for Pentek Reverse Osmosis Systems, American Plumber Reverse Osmosis Systems, Ametek Reverse Osmosis Systems, USFilter Reverse Osmosis Systems. This tank is the same as the American Plumber 144165 and the Pentek 144165 RO tank. It is also known as the RO-132 tank. This RO tank has been tested and certified by NSF International under NSF/ANSI Standard 58 for material and structural integrity. A black RO tank stand is included with the RO tank. The actual water storage capacity of RO tanks is not the stated size (in this case 4.5 Gallons). Reverse Osmosis water storage tanks have an internal bladder and an air pocket. The actual water storage capacity will depend on the air pressure inside the tank, the water pressure and the shut off pressure. The storage capacity of this RO tank is closer to 3.2 Gallons.
Package Qty1
Used In BrandsTier1
Manufacturer's IdRO-132-W14
Actual Size (in)14 inches (length) x 11 inches (width)
Actual Size (cm)35.56 x 27.94
Maximum Operating Pressure (psi)100
Fitting TypeNPT
Fitting Size (inches)1/4 inch
Tank Volume (gallons)3.2
CertificationsNSF/ANSI Standard 58
Warranty GuaranteeUnconditional Product Guarantee for Life of the Product
IncludesTank stand included

Reduced Contaminants


  1. Before setting the pressure on your tank, you should empty the tank of water
  2. There are two nipples on the tank. The nipple on the bottom should have a blue cap on it. Remove this cap and use a bicycle pump to add pressure to the tank
  3. You should use a digital pressure gauge on the nipple because non-digital pressure gauges are not sensitive enough. You can purchase a digital pressure gauge separately if needed
  4. The recommended pressure for the tank depends on the size of your tank. The most common tank size is 2 gallons. For these and similarly-sized tanks, you should have pressure of 8 psi when the tank is empty. If the tank is full, it should be at 36 psi
  5. For larger tanks, such as 14 gallon, 36 gallon, 44 gallon, and 86 gallon units, the pressure will need to be greater
  6. Change your filters and membrane at the recommended frequency, and clean your system with a product like Sani-System SS96RO, an easy to use, pre-measured, reverse osmosis system sanitizer