Feed Water Adapter Valve for Reverse Osmosis System, Connection - 3/8" & 1/2"
Feed Water Adapter Valve for Reverse Osmosis System, Connection - 3/8" & 1/2" - Feed Water Valve is backordered and will ship as soon as it is back in stock.
Description
Description
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Shipping & Returns
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Feed Water Adapter Valve for Reverse Osmosis System, Connection - 3...
Feed Water Adapter 3/8" & 1/2"
Our RO feed water adapter fits both standard 1/2 inch or 3/8 inch faucet pipes. The adapter outputs to standard ¼" OD tubing using a compression fitting and has a shut-off valve for servicing to water filter. It is lead and BPA free.
Common American National Standard Pipe Taper Threads:
- NPT - National Pipe Thread Taper (ANSI/ASME B1.20.1)
- NPTF - Dryseal American National Standard Taper Pipe Thread (ANSI B1.20.3)
NPT threads may be referred to as MPT ('Male Pipe Thread'), MNPT, or NPT(M) for male (external) threads, and FPT ('Female Pipe Thread'), FNPT, or NPT(F) for female (internal) threads. Note that FPT and MPT are not authorized designations per the ANSI standard.
For NPT threads, a sealant compound or Teflon tape must be used for a leak-free seal. For NPTF, no sealant is needed for a leak-tight connection.
Characteristics of NPT (also known as ANSI/ASME B1.20.1 Pipe Threads, General Purpose):
- Tapered Thread 1°47'
- Truncation of Roots And Crests Are Flat
- 60° Thread Angle
- Pitch Is Measured In Threads Per Inch
Note: Pipe sizes do not refer to any physical dimensions. The outside diameter of a pipe or fitting must be measured and compared to a table for size identification. A 3/4" NPT pipe thread has an outside diameter - OD - of 1.050 inches. Each thread size has a defined number of threads per inch - TPI, or pitch. The 3/4" NPT pipe thread has 14 threads per inch. Both the TPI and OD of the thread are required for positive identification of thread size because more than one size has the same TPI.
| Pipe Size | Thread per Inch | Length of Thread (inches) | # of Threads to be Cut | Total thread Makeup (inches) | Outside Pipe Diameter (inches) | Tap Drill (inches) |
|---|---|---|---|---|---|---|
| 1/16" | 27 | 0.313 | ||||
| 1/8" | 27 | 3/8 | 10 | 1/4 | 0.405 | R |
| 1/4" | 18 | 5/8 | 11 | 3/8 | 0.540 | 7/16 |
| 3/8" | 18 | 5/8 | 11 | 3/8 | 0.675 | 37/64 |
| 1/2" | 14 | 3/4 | 10 | 7/16 | 0.840 | 23/32 |
| 3/4" | 14 | 3/4 | 10 | 1/2 | 1.050 | 59/64 |
| 1" | 11-1/2 | 7/8 | 10 | 9/16 | 1.315 | 1-5/32 |
| 1-1/4" | 11-1/2 | 1 | 11 | 9/16 | 1.660 | 1-1/2 |
| 1-1/2" | 11-1/2 | 1 | 11 | 9/16 | 1.900 | 1-47/64 |
| 2" | 11-1/2 | 1 | 11 | 5/8 | 2.375 | 2-7/32 |
| 2-1/2" | 8 | 1 1/2 | 12 | 7/8 | 2.875 | 2-5/8 |
| 3" | 8 | 1 1/2 | 12 | 1 | 3.500 | 3-1/4 |
| 3-1/2" | 8 | 1 5/8 | 13 | 1 1/16 | 4.000 | 3-3/4 |
| 4" | 8 | 1 5/8 | 13 | 1 1/16 | 4.500 | 4-1/4 |
| 4 1/2" | 8 | 5.000 | 4-3/4 | |||
| 5" | 8 | 1 3/4 | 14 | 1 3/16 | 5.563 | 5-9/32 |
| 6" | 8 | 1 3/4 | 14 | 1 3/16 | 6.625 | 6-11/32 |
| 8" | 8 | 1 7/8 | 15 | 1 5/16 | 8.625 | |
| 10" | 8 | 2 | 16 | 1 1/2 | 10.750 | |
| 12" | 8 | 2 1/8 | 17 | 1 5/8 | 12.750 | |
| 14" | 8 | 14.000 | ||||
| 16" | 8 | 16.000 |
The taper of NPT threads measures 1/16 inch per inch, equivalent to 3/4 inch per foot, with an angle of 1°47'.
It's important to note that NPT threads cannot be substituted with NPS (National Pipe Straight) threads. While NPT threads may resemble ISO 7/1 threads, they should never be mixed. ISO threads have a taper angle of 55° compared to NPT's 60°. Additionally, the root and crest configurations of NPT threads differ from ISO. ISO thread pitch is typically measured in millimeters and differs from NPT threads.
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