Dixon FMG-BUS-15-8 1/2" x 1/4" (15 x 8 mm) Reducing Hex Bush BSP Galv. Malleable Iron
Available
This Dixon reducing hex bush has a larger male BSP thread on the outside and a smaller female BSP thread on the inside, so it reduces a female port to a smaller size. It is galvanised malleable iron with a hex for the spanner. This page lists 38 size combinations, from 1/4" x 1/8" to 6" x 4" (male x female).
Dixon describes its galvanised malleable iron BSP fittings as ISO 5922 malleable cast iron, hot dip galvanised to ISO 1461, with ISO 7-1 pipe threads, for general low-pressure air and water at a working pressure of 150 PSI (about 10 bar) (manufacturer-stated). The range includes combinations up to 6" x 4", and the table shows the stainless equivalent (SS16B series) where Dixon lists one (manufacturer-stated).
Where this product is used
- Reducing a female port to take a smaller pipe, gauge or fitting in air and water pipework (manufacturer-stated).
- Fitting a smaller branch into a tee, elbow or manifold port without a separate reducing fitting.
Features
- Reducing hex bush, male x female BSP (manufacturer-stated)
- End connection: Male x female BSP, reducing (manufacturer-stated)
- Body: ISO 5922 malleable cast iron, hot dip galvanised to ISO 1461 (manufacturer-stated)
- Working pressure: 150 PSI (about 10 bar), for general low-pressure air and water (manufacturer-stated)
- Sizes on this page: 1/4" x 1/8" to 6" x 4" (38 combinations)
Common specifications
| Specification | Detail |
|---|---|
| End connection | Male x female BSP, reducing |
| Body material | ISO 5922 malleable cast iron (manufacturer-stated) |
| Coating | Hot dip galvanised, ISO 1461 (manufacturer-stated) |
| Thread standard | ISO 7-1 pipe threads (BSP) (manufacturer-stated) |
| Design | Generally in accordance with AS3673 (manufacturer-stated); slight variations may occur where the manufacturer's dimensions are used |
| Working pressure | 150 PSI (about 10 bar) |
| Application | General low-pressure air and water |
Key specifications
| Dixon part number | Male x female thread (inch) | Nominal size (catalogue) | Same size in 316 stainless steel (catalogue) |
|---|---|---|---|
| FMG-BUS-8-6 | 1/4" x 1/8" | 8 x 6 mm | SS16B0806 |
| FMG-BUS-10-6 | 3/8" x 1/8" | 10 x 6 mm | SS16B1006 |
| FMG-BUS-10-8 | 3/8" x 1/4" | 10 x 8 mm | SS16B1008 |
| FMG-BUS-15-6 | 1/2" x 1/8" | 15 x 6 mm | SS16B1506 |
| FMG-BUS-15-8 | 1/2" x 1/4" | 15 x 8 mm | SS16B1508 |
| FMG-BUS-15-10 | 1/2" x 3/8" | 15 x 10 mm | SS16B1510 |
| FMG-BUS-20-8 | 3/4" x 1/4" | 20 x 8 mm | SS16B2008 |
| FMG-BUS-20-10 | 3/4" x 3/8" | 20 x 10 mm | SS16B2010 |
| FMG-BUS-20-15 | 3/4" x 1/2" | 20 x 15 mm | SS16B2015 |
| FMG-BUS-25-8 | 1" x 1/4" | 25 x 8 mm | Not listed |
| FMG-BUS-25-10 | 1" x 3/8" | 25 x 10 mm | Not listed |
| FMG-BUS-25-15 | 1" x 1/2" | 25 x 15 mm | SS16B2515 |
| FMG-BUS-25-20 | 1" x 3/4" | 25 x 20 mm | SS16B2520 |
| FMG-BUS-32-15 | 1-1/4" x 1/2" | 32 x 15 mm | SS16B3215 |
| FMG-BUS-32-20 | 1-1/4" x 3/4" | 32 x 20 mm | SS16B3220 |
| FMG-BUS-32-25 | 1-1/4" x 1" | 32 x 25 mm | SS16B3225 |
| FMG-BUS-40-15 | 1-1/2" x 1/2" | 40 x 15 mm | SS16B4015 |
| FMG-BUS-40-20 | 1-1/2" x 3/4" | 40 x 20 mm | SS16B4020 |
| FMG-BUS-40-25 | 1-1/2" x 1" | 40 x 25 mm | SS16B4025 |
| FMG-BUS-40-32 | 1-1/2" x 1-1/4" | 40 x 32 mm | SS16B4032 |
| FMG-BUS-50-15 | 2" x 1/2" | 50 x 15 mm | Not listed |
| FMG-BUS-50-20 | 2" x 3/4" | 50 x 20 mm | Not listed |
| FMG-BUS-50-25 | 2" x 1" | 50 x 25 mm | SS16B5025 |
| FMG-BUS-50-32 | 2" x 1-1/4" | 50 x 32 mm | SS16B5032 |
| FMG-BUS-50-40 | 2" x 1-1/2" | 50 x 40 mm | SS16B5040 |
| FMG-BUS-65-25 | 2-1/2" x 1" | 65 x 25 mm | Not listed |
| FMG-BUS-65-32 | 2-1/2" x 1-1/4" | 65 x 32 mm | Not listed |
| FMG-BUS-65-40 | 2-1/2" x 1-1/2" | 65 x 40 mm | Not listed |
| FMG-BUS-65-50 | 2-1/2" x 2" | 65 x 50 mm | SS16B6550 |
| FMG-BUS-80-25 | 3" x 1" | 80 x 25 mm | Not listed |
| FMG-BUS-80-40 | 3" x 1-1/2" | 80 x 40 mm | Not listed |
| FMG-BUS-80-50 | 3" x 2" | 80 x 50 mm | SS16B8050 |
| FMG-BUS-80-65 | 3" x 2-1/2" | 80 x 65 mm | SS16B8065 |
| FMG-BUS-100-50 | 4" x 2" | 100 x 50 mm | SS16B100050 |
| FMG-BUS-100-65 | 4" x 2-1/2" | 100 x 65 mm | Not listed |
| FMG-BUS-100-80 | 4" x 3" | 100 x 80 mm | SS16B10080 |
| FMG-BUS-150-80 | 6" x 3" | 150 x 80 mm | Not listed |
| FMG-BUS-150-100 | 6" x 4" | 150 x 100 mm | Not listed |
Selecting the right option
Read the size as male x female: 3/4" x 1/2" has a 3/4" male thread that screws into a 3/4" female port, and a 1/2" female thread that takes a 1/2" male fitting. A bush keeps the overall length short; for a longer reduction between two female ports, use a reducing nipple. BSP threads do not mate with NPT or metric threads, so confirm the thread on every mating part before you order. Where the stainless column says "Not listed", Dixon prints no 316 stainless bush for that size.
Related products
Related Dixon fittings: Dixon Screwed Reducing Hex Bush Male x Female BSP 316 Stainless Steel, Dixon Screwed Reducing Hex Nipple BSP Galvanised Malleable Iron and Dixon Screwed Reducing Socket BSP Galvanised Malleable Iron.
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1/2 x 3/8
Model Number: FMG-BUS-15-10
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1/2 x 1/8
Model Number: FMG-BUS-15-6
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1/2 x 1/4
Model Number: FMG-BUS-15-8
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1 x 3/8
Model Number: FMG-BUS-25-10
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1 x 1/2
Model Number: FMG-BUS-25-15
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1 x 3/4
Model Number: FMG-BUS-25-20
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1 x 1/4
Model Number: FMG-BUS-25-8
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1-1/4 x 1/2
Model Number: FMG-BUS-32-15
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1-1/4 x 3/4
Model Number: FMG-BUS-32-20
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1-1/4 x 1
Model Number: FMG-BUS-32-25
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1-1/2 x 1/2
Model Number: FMG-BUS-40-15
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1-1/2 x 3/4
Model Number: FMG-BUS-40-20
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1-1/2 x 1
Model Number: FMG-BUS-40-25
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1-1/2 x 1-1/4
Model Number: FMG-BUS-40-32
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1/4 x 1/8
Model Number: FMG-BUS-8-6
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2 x 1/2
Model Number: FMG-BUS-50-15
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2 x 3/4
Model Number: FMG-BUS-50-20
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2 x 1
Model Number: FMG-BUS-50-25
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2 x 1-1/4
Model Number: FMG-BUS-50-32
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2 x 1-1/2
Model Number: FMG-BUS-50-40
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2-1/2 x 1
Model Number: FMG-BUS-65-25
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2-1/2 x 1-1/4
Model Number: FMG-BUS-65-32
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2-1/2 x 1-1/2
Model Number: FMG-BUS-65-40
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2-1/2 x 2
Model Number: FMG-BUS-65-50
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3/8 x 1/8
Model Number: FMG-BUS-10-6
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3/8 x 1/4
Model Number: FMG-BUS-10-8
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3/4 x 3/8
Model Number: FMG-BUS-20-10
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3/4 x 1/2
Model Number: FMG-BUS-20-15
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3/4 x 1/4
Model Number: FMG-BUS-20-8
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3 x 1
Model Number: FMG-BUS-80-25
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3 x 1-1/2
Model Number: FMG-BUS-80-40
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3 x 2
Model Number: FMG-BUS-80-50
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3 x 2-1/2
Model Number: FMG-BUS-80-65
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4 x 2
Model Number: FMG-BUS-100-50
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4 x 2-1/2
Model Number: FMG-BUS-100-65
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4 x 3
Model Number: FMG-BUS-100-80
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6 x 4
Model Number: FMG-BUS-150-100
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6 x 3
Model Number: FMG-BUS-150-80
