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3 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
2 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x ERP1000 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System

View Cart$2,056.44
Specials Log InCreate Account Checkout  Shopping Cart51 item(s)
3 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
2 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x ERP1000 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System

View Cart$2,056.44

ASA, Stem Adapter NPT Thread [ASA]

$2.50

ASA, Stem Adapter NPT Thread



* ASA, Stem Adapter NPT Thread

* Please choose size from the selection box below. First number is tubing OD Outside Diameter and second number is NPT National Pipe Thread. (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" NPTF Thread ASA0404
* 1/4" Tube OD x 1/8" NPTF Thread ASA0402
* 3/8" Tube OD x 1/4" NPTF Thread ASA0604
* 3/8" Tube OD x 3/8" NPTF Thread ASA0606
* 1/2" Tube OD x 3/8" NPTF Thread ASA0706
* 1/2" Tube OD x 1/2" NPTF Thread ASA0707


* 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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