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1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
2 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
3 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 719, Drain Saddle Clamp / Valve
1 x KT-103, Optional Manual Membrane Flush Valve
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 578, TDS Water Quality Meter tds-3
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x *Discontinued* RD106
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
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 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 752, DC Booster Pump w/ Transformer
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x FRQ850, Flow Restrictor 850ML / min
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet

View Cart$3,131.85
Specials Log InCreate Account Checkout  Shopping Cart56 item(s)
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
2 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
3 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 719, Drain Saddle Clamp / Valve
1 x KT-103, Optional Manual Membrane Flush Valve
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 578, TDS Water Quality Meter tds-3
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x *Discontinued* RD106
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
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 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 752, DC Booster Pump w/ Transformer
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x FRQ850, Flow Restrictor 850ML / min
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet

View Cart$3,131.85

AHUC, Inline Ball Hand Valve Union Connector OD Tubing [AHUC]

$5.00

AHUC, Inline Ball Hand Valve Union Connector OD Tubing



* AHUC, Inline Ball Valve or Hand Valve Union Connector

* Position "Close" to force the water to flow to long reach faucet directly

* Position "Open" to allow the water flow in/out the water tank

* Please choose size from the selection box below. Both numbers are tubing OD Outside Diameter (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 AHUC0404
* 3/8" Tube OD x 3/8" Tube OD AHUC0606
* 1/2" Tube OD x 1/2" Tube OD AHUC0707


* 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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