Log In Log In  |  Checkout   |  110 item(s)
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
3 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
3 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 752, DC Booster Pump w/ Transformer
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
3 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
3 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 720, Feed Water Adapter with Needle Valve
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x CBV-38, Tank Ball Valve to 3/8 tubing
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x *Discontinued* RO155C
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 706, Membrane Filter Casing Housing Assembly
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x *Discontinued* RO6ALK
1 x bulk213, Inline Carbon Filter
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
4 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
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)

View Cart$6,757.17
Specials Log InCreate Account Checkout  Shopping Cart110 item(s)
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
3 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
3 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 752, DC Booster Pump w/ Transformer
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
3 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
3 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 720, Feed Water Adapter with Needle Valve
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x CBV-38, Tank Ball Valve to 3/8 tubing
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x *Discontinued* RO155C
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 706, Membrane Filter Casing Housing Assembly
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x *Discontinued* RO6ALK
1 x bulk213, Inline Carbon Filter
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
4 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
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)

View Cart$6,757.17

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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