1/4 in (8 mm) Threaded Half Coupling, BSPT, Black | PCH08B
Available
This AAP threaded half coupling is a forged carbon steel fitting with BSPT thread and a black finish. It is supplied in 11 sizes, 1/4 in (8 mm) to 4 in (100 mm).
A half coupling is a short fitting with an internal thread at one end. It is normally welded to a pipe or vessel at the other end to make a threaded outlet. AAP does not describe the end detail, so confirm it with AIMS before you order. A is its length and B is its outside diameter, as lettered on the AAP drawing.
AAP rates its threaded high pressure fittings at 3000 lb (manufacturer-stated). AAP's pressure and temperature chart for screwed and socket welding fittings lists 3000 lb fittings at 3000 psi (about 20.7 MPa) from -20 to 100 degrees F (-29 to 38 degrees C), reducing to 355 psi (about 2.4 MPa) at 1000 degrees F (538 degrees C). AAP lists ASTM A105 carbon steel forgings among the standards for the range.
Where this product is used
- High pressure threaded pipework in carbon steel, as listed by AAP for the 3000 lb range
- Making a threaded outlet on a pipe or vessel by welding
- Instrument and drain connections on carbon steel pipework
Features
- 11 sizes, 1/4 in (8 mm) to 4 in (100 mm)
- 3000 lb forged carbon steel, ASME B16.11-2009 (manufacturer-stated)
- BSPT, black
Key specifications
| Specification | Detail |
|---|---|
| Brand | AAP |
| Product | Threaded half coupling, forged carbon steel |
| Thread | BSPT taper threads to AS 1722.1 / ISO 7 (manufacturer-stated) |
| Finish | Black |
| Rating (manufacturer-stated) | 3000 lb, threaded end |
| Applicable standard (manufacturer-stated) | ASME B16.11-2009 |
| Material | Carbon steel forging (AAP lists ASTM A105 among the standards for the range, manufacturer-stated) |
| Marking (manufacturer-stated) | Sizes 3/8 in and under: brand only. 1/2 in to 4 in: brand, material, heat number, B16, pressure and size |
| Sizes | 1/4 in (8 mm) to 4 in (100 mm) (11 sizes) |
Options and part numbers
| Size | Part number | Length A (mm) | Outside dia. B (mm) | Weight (kg) |
|---|---|---|---|---|
| 1/4 in (8 mm) | PCH08B | 18 | 19 | 0.02 |
| 3/8 in (10 mm) | PCH10B | 19 | 22 | 0.03 |
| 1/2 in (15 mm) | PCH15B | 24 | 28 | 0.06 |
| 3/4 in (20 mm) | PCH20B | 26 | 35 | 0.1 |
| 1 in (25 mm) | PCH25B | 30 | 44 | 0.23 |
| 1-1/4 in (32 mm) | PCH32B | 34 | 57 | 0.34 |
| 1-1/2 in (40 mm) | PCH40B | 40 | 64 | 0.54 |
| 2 in (50 mm) | PCH50B | 43 | 76 | 0.7 |
| 2-1/2 in (65 mm) | PCH65B | 46 | 92 | 1.13 |
| 3 in (80 mm) | PCH80B | 54 | 108 | 1.68 |
| 4 in (100 mm) | PCH94B | 61 | 140 | 3.11 |
A and B are the dimensions lettered on the AAP drawing, in millimetres.
Selecting the right option
Choose the size and thread to match your pipework (NPT or BSPT cannot be mixed), and check the thread gender at each end against the fitting it joins.
Related products
See also AAP 3000lb Threaded Coupling, BSPT, Black, AAP 3000lb Threaded Cap, BSPT, Black, AAP 3000lb 90 Degree Threaded Elbow, BSPT, Black and AAP 3000lb Threaded Equal Tee, BSPT, Black.
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1/4"
Model Number: PCH08B
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1/2"
Model Number: PCH15B
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1"
Model Number: PCH25B
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1-1/4"
Model Number: PCH32B
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1-1/2"
Model Number: PCH40B
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2"
Model Number: PCH50B
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2-1/2"
Model Number: PCH65B
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3/8"
Model Number: PCH10B
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3/4"
Model Number: PCH20B
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3"
Model Number: PCH80B
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4"
Model Number: PCH94B
