Log In Log In  |  Checkout   |  74 item(s)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x MKP, Maintenance kit for K5150P K6150P AR150P
4 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
5 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 752, DC Booster Pump w/ Transformer
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
2 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x *Discontinued* RO585NTF
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
3 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
2 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
2 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x 578, TDS Water Quality Meter tds-3
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x *Discontinued* RO585A
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265

View Cart$5,792.48
Specials Log InCreate Account Checkout  Shopping Cart74 item(s)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x MKP, Maintenance kit for K5150P K6150P AR150P
4 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
5 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 752, DC Booster Pump w/ Transformer
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
2 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x *Discontinued* RO585NTF
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
3 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
2 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
2 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x 578, TDS Water Quality Meter tds-3
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x *Discontinued* RO585A
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265

View Cart$5,792.48

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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