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2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x MK420, Maintenance kit for RO565
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
2 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
2 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
2 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
2 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x *Discontinued* RO155C
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x *Discontinued* RD150
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x HK120-P-TK for USA 110V / 60Hz
1 x *Discontinued* RD106
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x *Discontinued* RO155
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x *Discontinued* RD102
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x Special Filter Kit Koolermax dealer distribution kit
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x 565, Digital Pressure Gauge Tester Monitor
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
2 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x 578, TDS Water Quality Meter tds-3
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x KT-103, Optional Manual Membrane Flush Valve
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)

View Cart$8,585.01
Specials Log InCreate Account Checkout  Shopping Cart150 item(s)
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x MK420, Maintenance kit for RO565
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
2 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
2 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
2 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
2 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x *Discontinued* RO155C
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x *Discontinued* RD150
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x HK120-P-TK for USA 110V / 60Hz
1 x *Discontinued* RD106
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x *Discontinued* RO155
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x *Discontinued* RD102
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x Special Filter Kit Koolermax dealer distribution kit
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x 565, Digital Pressure Gauge Tester Monitor
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
2 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x 578, TDS Water Quality Meter tds-3
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x KT-103, Optional Manual Membrane Flush Valve
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)

View Cart$8,585.01

ACHV, Check Valve Inline Type [ACHV]

$9.00

ACHV, Check Valve Inline Type



* ACHV, Check Valve Inline Type

* Please choose size from the selection box below. Both numbers are tubing OD Outside Diameter. First number is Tube in and second number is Tube out. (Pipe sizes can be confusing even for the experienced user. Pipe size is not the actual outside or inside diameter of the pipe but is the industry accepted designation. If you have any question please email us first.)
* 1/4" Tube OD x 1/4" Tube OD ACHV0404
* 3/8" Tube OD x 3/8" Tube OD ACHV0606
* 1/2" Tube OD x 1/2" Tube OD ACHV0707


* Water & foods use: Products are manufactured from safe, non-toxic materials meeting the requirements of the US FDA, ERAS, ANSI/NSF-51,61, and SK Zert. Our products are widely used in water purification, food/beverage, and pneumatic systems.

* Function & Quality: Provides quick and convenient assembly-saving time & expense.

* Collet Design: Our unique oval collet design is superior and more practical, and is an improvement welcomed by our world wide customers in all industries.

* Additional Applications: Beyond water and food use, fittings can be used with air, gases, vacuum, & liquids. All connections can be assembled & disassembled repeatedly. A broad range of sizes covers a broad scope of applications.

* We carry different fittings in variation of sizes: 1/4", 3/8", or 1/2" adapters, connectors, fittings, or valves.  Most are not listed online, to avoid confusion to majority of RO system customers.  

* Send us a message with specification, intended application, and image of your setup or old fitting  to check if we have what you need. 

Available Options:

Size Combination:

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