Log In Log In  |  Checkout   |  67 item(s)
1 x 913, 5th stage inline carbon filter (every 12 months)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x MK420, Maintenance kit for RO565
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x *Discontinued* RD106
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 752, DC Booster Pump w/ Transformer
5 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x *Discontinued* RD102
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x *Discontinued* RD150
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
3 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)

View Cart$3,535.50
Specials Log InCreate Account Checkout  Shopping Cart67 item(s)
1 x 913, 5th stage inline carbon filter (every 12 months)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x MK420, Maintenance kit for RO565
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x *Discontinued* RD106
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 752, DC Booster Pump w/ Transformer
5 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x *Discontinued* RD102
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x *Discontinued* RD150
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
3 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)

View Cart$3,535.50

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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