Category
- Instruments | Pipe Fittings | Female Pipe to Female Pipe
- Dimensions
- How To Order
- Pipe End Thread Information
- Features
Dimensions
| Female NPT to Reduced Female NPT | |||||
| Part No. | P NPT | P1 NPT | Dimensions (mm) | ||
| L | F | ||||
| inch | mm | ||||
| PRC-04N02N | 1/4 | 1/8 | 31.0 | 3/4 | 19.05 |
| PRC-06N04N | 3/8 | 1/4 | 35.1 | 7/8 | 22.22 |
| PRC-08N04N | 1/2 | 1/4 | 44.4 | 1-1/16 | 26.98 |
| PRC-08N06N | 1/2 | 3/8 | 45.2 | 1-1/16 | 26.98 |
| PRC-12N04N | 3/4 | 1/4 | 46.0 | 1-5/16 | 31.75 |
| PRC-12N08N | 3/4 | 1/2 | 52.3 | 1-5/16 | 31.75 |
| PRC-16N08N | 1 | 1/2 | 55.6 | 1-5/8 | 41.27 |
| PRC-16N12N | 1 | 3/4 | 57.2 | 1-5/8 | 41.27 |
How To Order
UNILOK pipe fittings are ordered by part number as shown below.
Example: The following part number, PHRN-08N04N-SS is designated for Reducing Hex Nipple, 1/2 Male-NPT x 1/4 Male NPT, 316SS.
| P | RC | - | 08 | N | 04 | N | - | - | SS | ||
| UNILOK Pipe Fittings | Fitting Type | Pipe Thread Size | Thread Type | Pipe Thread Size | Thread Type | Pressure Rating | Material | NACE | |||
| NACE Application | Material Designation | |||||||||||
| Pipe Size | 1/8 | 1/4 | 3/8 | 1/2 | 3/4 | 1 | Designator | Material | ||||
| Designator | 02 | 04 | 06 | 08 | 12 | 16 | SS | 316SS | ||||
| BS | Brass | |||||||||||
| Thread Type Designation | MO40 | Alloy400 | ||||||||||
| Designator | Thread Type | |||||||||||
| N | NPT | National Standard Pipe Thread | Pressure Rating Designation | |||||||||
| R | ISO 7/1 | Taper Pipe Thread | Designator | Pressure Rating | ||||||||
| G | ISO 228/1 | Parallel Pipe Thread | 6K | 6000 psi | ||||||||
| WS-*T | Socket Weld-Tube | 10K | 10000 psi | |||||||||
Pipe fittings for high pressure application are available. The standard pressure ratings for each thread sizes are based on ASME B31.3 at ambient temperature. For the availability of 6000psig and 10000psig, contact your local distributors.
Pipe End Thread Information
The end connections with the lower pressure rating is the determining factor of pressure rating for the fittings with both UNILOK tube ends and pipe thread ends .
Pressure Rating for Pipe End Thread
| Tapered Pipe Threads - NPT or ISO 7/1(BSPT) Allowable pressure ratings for male and female threads are based on ASME B31.3 at ambient temperature. | ISO 228/1 Parallel Thread (BSPP) The pressure ratings are at ambient temperature. | ||||||||||||
| Pipe Size | 316SS | 316SS | UNILOK Desig nator | Male Pipe Size | 316SS | UNILOK Designator | |||||||
| Male | Female | Male | Female | bar | psig | ||||||||
| inch | bar | psig | bar | psig | psig | bar | psig | 1/8 | 315 | 4568 | -02G | ||
| 1/16 | 760 | 11000 | 460 | 6700 | 5500 | 230 | 3300 | -01N/R | 1/4 | 315 | 4568 | -04G | |
| 1/8 | 690 | 10000 | 440 | 6500 | 5000 | 220 | 3200 | -02N/R | 3/8 | 315 | 4568 | -06G | |
| 1/4 | 550 | 8000 | 450 | 6600 | 4000 | 220 | 3300 | -04N/R | 1/2 | 160 | 2320 | -08G | |
| 3/8 | 540 | 7800 | 360 | 5300 | 3900 | 180 | 2600 | -06N/R | |||||
| 1/2 | 530 | 7700 | 330 | 4900 | 3800 | 160 | 2400 | -08N/R | |||||
| 3/4 | 500 | 7300 | 320 | 4600 | 3600 | 160 | 2300 | -12N/R | |||||
| 1 | 370 | 5300 | 300 | 4400 | 2600 | 150 | 2200 | -16N/R | |||||
| 1-1/4 | 410 | 6000 | 350 | 5000 | 3000 | 170 | 2500 | -20N/R | |||||
| 1-1/2 | 340 | 5000 | 310 | 4600 | 2500 | 150 | 2300 | -24N/R | |||||
| 2 | 270 | 3900 | 270 | 3900 | 1900 | 130 | 1900 | -32N/R | |||||
O-Seal Fittings
Rated to 206 bar (3000 psig) for 316SS fittings up to 1 inch and 25mm
Kinds of Pipe End Thread
NPT Pipe Thread | ISO 7/1 Tapered Pipe Thread | ISO 228/1 Parallel Pipe Thread | ||||||||||
Features
Excellent finish level to allow smooth flow transition.
Every piece of elbow has a radius junction to eliminate entrapment areas and allow smooth flow transition for all elbows, including pipe fittings.
Fine threads meet the requirements of ASME/ANSI B1.20.1 to ensure maximum thread engagement.
Working pressures are higher than traditional piping classes, 3000 pipe fittings to ASME B16.11.
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