Log In Log In  |  Checkout   |  82 item(s)
1 x 720, Feed Water Adapter with Needle Valve
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
3 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x *Discontinued* RO155
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x 719, Drain Saddle Clamp / Valve
1 x MK420, Maintenance kit for RO565
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x FRQ420, Flow Restrictor 420ML / min
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x FRQ850, Flow Restrictor 850ML / min
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x 706, Membrane Filter Casing Housing Assembly
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
2 x 752, DC Booster Pump w/ Transformer
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO

View Cart$5,350.40
Specials Log InCreate Account Checkout  Shopping Cart82 item(s)
1 x 720, Feed Water Adapter with Needle Valve
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
3 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x *Discontinued* RO155
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x 719, Drain Saddle Clamp / Valve
1 x MK420, Maintenance kit for RO565
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x FRQ420, Flow Restrictor 420ML / min
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x FRQ850, Flow Restrictor 850ML / min
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x 706, Membrane Filter Casing Housing Assembly
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
2 x 752, DC Booster Pump w/ Transformer
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO

View Cart$5,350.40

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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