Log In Log In  |  Checkout   |  61 item(s)
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
2 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 720, Feed Water Adapter with Needle Valve
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
2 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
2 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 CBV-38, Tank Ball Valve to 3/8 tubing
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
2 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
2 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x 723, Feed Water Adapter with Ball Valve
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 719, Drain Saddle Clamp / Valve
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO

View Cart$1,183.08
Specials Log InCreate Account Checkout  Shopping Cart61 item(s)
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
2 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 720, Feed Water Adapter with Needle Valve
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
2 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
2 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 CBV-38, Tank Ball Valve to 3/8 tubing
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
2 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
2 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x 723, Feed Water Adapter with Ball Valve
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 719, Drain Saddle Clamp / Valve
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO

View Cart$1,183.08

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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