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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: 66)
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1/8" Female x Female Ball Valve
1/8" Female x Female Ball Valve
Your Price: $7.50
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Bicone 9mm Brass Fitting
Bicone 9mm Brass Fitting
Your Price: $1.00
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Bicone 10mm Brass Fitting
Bicone 10mm Brass Fitting
Your Price: $1.00
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Bicone 12mm Brass Fitting
Bicone 12mm Brass Fitting
Your Price: $1.25
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Bicone NUT Brass Fitting 1/8" for 6mm Tubing
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
Bicone NUT Brass Fitting 1/4" for 6mm Tubing
Your Price: $1.50
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1/2 inch BPP Brass Tap Fixing Nut Fitting
1/2 inch BPP Brass Tap Fixing Nut Fitting
Your Price: $0.75
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1/8" Special T Fitting Female Female Male
1/8" Special T Fitting Female Female Male
Your Price: $3.50
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1/4" Ball Valve
1/4" Ball Valve
Your Price: $4.50
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1/4" BPP T Fitting Lateral Male
1/4" BPP T Fitting Lateral Male
Your Price: $4.50
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8mm Bendable Soft Copper Tubing
8mm Bendable Soft Copper Tubing
Your Price: $4.50
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3/8" Female Female Ball Valve Tap
3/8" Female Female Ball Valve Tap
Your Price: $9.50
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1/4" Vacuum Breaker Valve Full Size
1/4" Vacuum Breaker Valve Full Size
Your Price: $16.50
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1/2 inch BPP Brass Cap Nut Fitting
1/2 inch BPP Brass Cap Nut Fitting
Your Price: $2.25
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Cap fitting for 4mm Tube
Cap fitting for 4mm Tube
Your Price: $0.75
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Bicone NUT Brass Fitting 1/2" for 12mm Tubing
Bicone NUT Brass Fitting 1/2" for 12mm Tubing
Your Price: $2.00
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3/8"  F - 1/2" M brass adapter fitting
3/8" F - 1/2" M brass adapter fitting
Your Price: $3.50
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Alimentary Gasket for 1/8" Fitting
Alimentary Gasket for 1/8" Fitting
Your Price: $0.50
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3/8 M x 1/8 M Adapter fitting
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
1/8" T Fitting BPP Male Male Male
Your Price: $2.50
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1/4" BPP  T Fitting Male - Male - Male
1/4" BPP T Fitting Male - Male - Male
Your Price: $2.95
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1/4" BPP T Fitting, Female Male Female
1/4" BPP T Fitting, Female Male Female
Your Price: $2.95
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1/4" BPP Elbow Fitting, Female Male
1/4" BPP Elbow Fitting, Female Male
Your Price: $2.50
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Bicone 8mm Brass Fitting
Bicone 8mm Brass Fitting
Your Price: $1.00
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1/8" BPP Elbow Fitting Male Male
1/8" BPP Elbow Fitting Male Male
Your Price: $2.50
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1/4" Hollow Copper Crush Washer
1/4" Hollow Copper Crush Washer
Your Price: $0.50
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BPP 3/8" x 3/8" Racor Brass Fitting
BPP 3/8" x 3/8" Racor Brass Fitting
Your Price: $3.50
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Brass Reinforcement Fitting for 8mm - 10mm Teflon Tube
Brass Reinforcement Fitting for 8mm - 10mm Teflon Tube
Your Price: $1.00
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BPP 1/2" M x 3/4" M Brass Fitting Racor
BPP 1/2" M x 3/4" M Brass Fitting Racor
Your Price: $4.50
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BPP 3/8 Brass Jam Nut
BPP 3/8 Brass Jam Nut
Your Price: $0.75
Buy
 
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