Log In Log In  |  Checkout   |  49 item(s)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x *Discontinued* RO6ALK
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 752, DC Booster Pump w/ Transformer
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x *Discontinued* RO585NTF
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)

View Cart$3,240.79
Specials Log InCreate Account Checkout  Shopping Cart49 item(s)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x *Discontinued* RO6ALK
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 752, DC Booster Pump w/ Transformer
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x *Discontinued* RO585NTF
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)

View Cart$3,240.79

531, PAE RO Storage Pressure Osmosis Water Tank Container 3G [531]

$45.00

531, PAE RO Storage Pressure Osmosis Water Tank Container 3G



* 531, RO Storage Pressure Tank, 3 Gallon, for replacement of Honeywell or Filtercold small blue tank

* Specification:
White color, outside volume 2 gallons, inside bladder holds about 2 gallons @ 60 psi input pressure

* Dimension: 9" diameter, 14" height, 1/4"MPT inlet connection

* Material:
Outside is steel, inside is a FDA approved food grade bladder. Stainless steel connection on top. Purified water only come in contact with bladder and the stainless steel connector on top. The tank is pre-charged to 7 psi.

* Meets NSF standard 58.

* Tank valve is included.

* Recommended changing every 5 to 7 years



If you'd like to know more.....
A pressure tank is used in RO systems to accumulate water and provide pressure at dispensing faucet. It has a water bladder inside the tank that holds the purified water, and outside the bladder is the compressed air. When you dispense water, the compressed air squeezes the bladder and forces the water out with pressure. You can connect several tanks together also to provide more water.

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