1/2 in (15 mm) Screwed Flange NPT, ANSI B16.5 Class 150 | PFS15
Available
This AAP NPT screwed flange is made from carbon steel to ANSI B16.5 Class 150 (manufacturer-stated). It is supplied in 9 sizes from 1/2 in (15 mm) to 4 in (100 mm).
A screwed flange is threaded to suit NPT threaded pipe, so it can be fitted without welding. AAP describes forged steel flanges as commonly specified in the oil, gas, petrochemical and mining sectors, where pressure, temperature and safety considerations are higher. They are hot forged and then machined.
AAP's temperature and pressure table for ASTM A105 flanges lists a maximum working pressure of 1,960 kPa (19.6 bar) for Class 150 from -29 to 38 °C, falling to 560 kPa (5.6 bar) at 425 °C. AAP notes that A105 forgings are not recommended for prolonged use above 427 °C.
Where this product is used
- Threaded pipework where welding is not practical
- Connecting threaded pipe to flanged valves, pumps and fittings
- Maintenance and repair work on threaded lines
- Oil, gas, petrochemical and mining pipework
Features
- 9 sizes from 1/2 in (15 mm) to 4 in (100 mm)
- Made to ANSI B16.5 Class 150 (manufacturer-stated)
- Material: carbon steel (AAP quotes ratings for ASTM A105 forgings)
- Raised face, 1.6 mm raised face height
- Maximum working pressure 1,960 kPa (19.6 bar) up to 38 °C, per the manufacturer
- NPT threaded bore, no welding needed
- Marked where possible with heat number, size, table, grade and dimensional standard
Key specifications
| Specification | Detail |
|---|---|
| Brand | AAP |
| Flange type | NPT screwed flange |
| Standard (manufacturer-stated) | ANSI B16.5 Class 150 |
| Material | Carbon steel (AAP quotes ratings for ASTM A105 forgings) |
| Face | Raised face, 1.6 mm raised face height |
| Connection | Screwed, NPT thread |
| Sizes | 1/2 in (15 mm) to 4 in (100 mm) (9 sizes) |
| Maximum working pressure | 1,960 kPa (19.6 bar) at -29 to 38 °C |
| Marking | Where possible: heat number, size, table, grade and dimensional standard |
Options and part numbers
| Size | Part number | OD (mm) | PCD (mm) | Holes | Bolt size | Thickness (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| 1/2 in (15 mm) | PFS15 | 89 | 60.3 | 4 x 16 mm | 1/2 in | 11.1 | 0.5 |
| 3/4 in (20 mm) | PFS20 | 98.5 | 69.8 | 4 x 16 mm | 1/2 in | 12.8 | 0.9 |
| 1 in (25 mm) | PFS25 | 108 | 79.3 | 4 x 16 mm | 1/2 in | 14.3 | 0.9 |
| 1-1/4 in (32 mm) | PFS32 | 117.5 | 88.9 | 4 x 16 mm | 1/2 in | 15.9 | 1.4 |
| 1-1/2 in (40 mm) | PFS40 | 127.1 | 98.4 | 4 x 16 mm | 1/2 in | 17.5 | 1.4 |
| 2 in (50 mm) | PFS50 | 152.5 | 120.6 | 4 x 20 mm | 5/8 in | 19.1 | 2.3 |
| 2-1/2 in (65 mm) | PFS65 | 177.9 | 139.7 | 4 x 20 mm | 5/8 in | 22.3 | 3.2 |
| 3 in (80 mm) | PFS80 | 190.6 | 152.4 | 4 x 20 mm | 5/8 in | 23.8 | 3.6 |
| 4 in (100 mm) | PFS94 | 228.7 | 190.5 | 8 x 20 mm | 5/8 in | 23.8 | 5.9 |
Selecting the right option
Check the thread on your pipe or fitting before ordering: this flange is NPT. Match the standard and table or class to the mating flange and compare the drilling dimensions listed on this page, because flanges made to different standards are not interchangeable. Gaskets and bolting are not part of this listing. If you are not sure what suits, contact AIMS with the standard and size of the mating flange.
Related products
See also AAP Blind Flange, ANSI B16.5 Class 150, AAP Slip-On Weld Flange, ANSI B16.5 Class 150, AAP Weld Neck Flange, ANSI B16.5 Class 150, AAP Screwed Flange NPT, ANSI B16.5 Class 300, AAP Insertion Gasket - Compressed Fiber Ring and AAP Insertion Gasket - Spiral Wound.
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1/2"
Model Number: PFS15
-
1"
Model Number: PFS25
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1-1/4"
Model Number: PFS32
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1-1/2"
Model Number: PFS40
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2"
Model Number: PFS50
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2-1/2"
Model Number: PFS65
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3/4"
Model Number: PFS20
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3"
Model Number: PFS80
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4"
Model Number: PFS94
