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3 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 752, DC Booster Pump w/ Transformer
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
3 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
2 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 723, Feed Water Adapter with Ball Valve
2 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
2 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x bulkc10, Koolermax Carbon Block Filter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 719, Drain Saddle Clamp / Valve
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch

View Cart$3,919.87
Specials Log InCreate Account Checkout  Shopping Cart76 item(s)
3 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 752, DC Booster Pump w/ Transformer
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
3 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
2 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 723, Feed Water Adapter with Ball Valve
2 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
2 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x bulkc10, Koolermax Carbon Block Filter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 719, Drain Saddle Clamp / Valve
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch

View Cart$3,919.87

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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