Espresso Machine Fittings

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Espresso Machine Fittings

Espresso machine piping, and fittings are not confusing, once you accept a few basic facts:

ALL of the tubing is measured in metric sizes, by the Outside Diameter (OD) of the tube.

ALL of the fittings are British Parallel Pipe (BPP) thread.

Fittings are almost always designed to create the seal at the end of the fittings, not on the threads themselves. NPT threads, used in North America, seal on the thread, and is tapered. BPP threads are not tapered, they are parallel.

An NPT thread can be 'crammed' into an Espresso machine threaded opening, or onto a fitting, but this will often destroy the geometry of the pipe, and lead to difficult installation choices. When a BPP thread is needed, BPP is what you SHOULD use.

As a matter of reference - fittings that are "Union" are the same thread on each end, whether male, or female (gender doesn't matter in a union!) Adapters are for changing thread size from one end to the other. Some adapters, going from a very large to a very small size are difficult to find in the US, and we hope this selection of fittings will aid in your espresso machine maintenance & repair.

As a further aid to identifying the thread size you need we have are providing this small guide by measuring the actual male thread on a fitting, in comparison to the nominal BPP size:

1/8 inch BPP actual measurement is approx 3/8" across (9mm)
1/4 inch BPP threads actual measurement is approx 1/2" across (12mm)
3/8 inch BPP threads actual measurement is approx 5/8" across (16mm)
1/2 inch BPP threads actual measurement is approx 3/4" across (20mm)
3/4 inch BPP threads actual measurement is approx 1" across (26mm)

For visual explanations of measuring copper tubing & fittings watch our video:

Tech Tip - Espresso Machine Copper Tubing & Compression Fittings - How to Measure

Hope this helps!

Products (Total Items: 90)

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3/8" Female Female Ball Valve Tap
Your Price: $9.50
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Bicone 10mm Brass Fitting
Your Price: $1.00
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Bicone 12mm Brass Fitting
Your Price: $1.25
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Bicone NUT Brass Fitting 1/8" for 6mm Tubing
Your Price: $1.25
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Bicone NUT Brass Fitting 1/4" for 6mm Tubing
Your Price: $1.50
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Bicone NUT Brass Fitting 3/8" Tubing for 8mm, 9mm or 10mm Tubing
Your Price: $1.75
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Bicone NUT Brass Fitting 1/2" for 12mm Tubing
Your Price: $2.00
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1/8" Special T Fitting Female Female Male
Your Price: $3.50
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1/8" Female x Female Ball Valve
Your Price: $7.50
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1/8 Female x 1/4 Male BPP Brass Adapter Fitting
Your Price: $1.25
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8mm Bendable Soft Copper Tubing
Your Price: $4.50
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Bicone 6mm Brass Fitting
Your Price: $0.75
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1/4" Vacuum Breaker Valve Full Size
Your Price: $16.50
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Mini Vacuum Breaker Valve
Your Price: $12.50
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Solder on Cap Fitting for 10mm Tubing
Your Price: $0.65
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Solder on Cap Fitting for 12mm Tubing
Your Price: $0.75
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1/4 inch BPP Brass Nut Fitting
Your Price: $0.75
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1/2 inch BPP Brass Tap Fixing Nut Fitting
Your Price: $0.75
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1/8 Male x 1/8 Male BPP Brass Union Fitting
Your Price: $0.75
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1/8 Male x 1/8 Female BPP Brass Union Fitting
Your Price: $1.00
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Cap fitting for 4mm Tube
Your Price: $0.75
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1/4" BPP T Fitting Lateral Male
Your Price: $4.50
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1/8" BPP Elbow Fitting Male Male
Your Price: $2.50
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3/8 M x 1/8 M Adapter fitting
Your Price: $3.75
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1/8" T Fitting BPP Male Male Male
Your Price: $2.50
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1/8" T Fitting BPP Male Male Lateral Female
Your Price: $2.50
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3/8" M x 3/4" F BPP Adapter Fitting
Your Price: $2.50
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1/4" BPP T Fitting Male - Male - Male
Your Price: $2.95
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1/4" BPP T Fitting with Central Female
Your Price: $3.50
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1/4" BPP T Fitting, Female Male Female
Your Price: $2.95
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