Brass Compression Fittings
Brass compression fittings are brass connection parts that join copper, aluminium or thin steel tube tightly with a ferrule (compression ring) and nut. No welding, soldering or threading is needed.
They are used in instrument, pressure gauge, lubrication, fuel and small-bore air lines. Single and double-ended nipples, elbows, tees and spare ferrules are supplied for tube sizes from 6 mm to 16 mm.
Main Applications
- Pressure gauge and instrument lines
- Central lubrication lines
- Burner and fuel lines
- Small-bore compressed air lines
- Machine cooling and control lines
- Copper tube water connections
Technical Data
| Fitting types | Single-ended compression nipple, double-ended nipple, single-ended elbow, compression elbow, compression tee, ferrule |
|---|---|
| Material | Brass (depending on model) |
| Tube outside diameter | 6, 8, 10, 12, 14, 16 mm (product range) |
| Threaded end | 1/8″, 1/4″, 3/8″, 1/2″ (product range) |
| Connection | Compression with ferrule and nut |
| Suitable tubes | Copper, aluminium, thin-walled steel tube (depending on model) |
| Working pressure | Depending on tube material and size, depending on model |
| Media | Water, oil, fuel, compressed air (depending on model) |
| Removability | Removed by opening the nut; ferrule replaced if needed |
| Installation | Tube cut and inserted with ferrule into the nut, nut tightened |
Material Options
| Part | Body | Nut | Ferrule |
|---|---|---|---|
| Material | Brass (depending on model) | Brass (depending on model) | Brass (depending on model) |
| Function | Carries the connection | Compresses the ferrule | Seats on the tube and seals |
| Thread | Threaded end G / R (depending on model) | Matches the body | — |
| Tube | 6–16 mm | Specific to tube size | Specific to tube size |
| Note | Threaded or compression ends | Tightened with a wrench | Spare ferrules available separately |
Which material? The ferrule must exactly match the tube outside diameter; for copper and soft tubes the use of an inner support sleeve should be assessed according to the manufacturer’s instructions.
Advantages
No Soldering or Threading
- The tube is cut and connected directly
Detachable
- Opened with the nut during maintenance
Practical in Small Sizes
- Instrument lines from 6 mm
Complete Set
- Nipples, elbows, tees and spare ferrules
Construction and Design Features
- Connection made of brass body, nut and ferrule
- The ferrule seats permanently on the tube as the nut is tightened
- Threaded or double compression end options
- Installation without welding or soldering
Send the tube outside diameter, threaded end size and fitting type; we will confirm suitable compression fittings from stock.
How to Choose?
- Measure the tube outside diameterFerrule and nut are chosen by the tube outside diameter.
- Choose the connection typeUse single-ended parts for devices and double-ended parts to join two tubes.
- Determine the threaded endCheck the thread size and type of the device port.
- Prepare the tubeCut the tube square and burr-free and fit the ferrule the right way round.
Complementary Products
Why ORFA?
Types of Brass Compression Fittings
Brass Double Compression Straight Connectors
Brass double compression straight connectors join two pipes in a straight line with a compression ring on each end.
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Brass Compression x Threaded Elbows
Brass compression x threaded elbows have one compression end and one threaded end and turn the line by 90 degrees.
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Brass Compression Rings
Brass compression rings grip the pipe and seal the joint in compression fittings.
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Brass Compression Elbows
Brass compression elbows join two pipes at a right angle with compression rings.
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Brass Compression Tees
Brass compression tees join three pipes with compression rings and split flow in three directions.
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Brass Compression x Threaded Connectors
Brass compression x threaded connectors have one compression end and one threaded end, moving a pipe to a threaded connection.
Details →Other Brass Fittings
Straight Radiator Unions
Straight radiator unions are brass fittings that connect a radiator to the pipework in a straight line and can be taken apart.
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Angle Radiator Unions
Angle radiator unions are brass fittings that connect a radiator to the pipework at a right angle and can be taken apart.
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PEX Fittings
PEX fittings are brass fittings used to connect PEX pipes to the installation or to fixtures.
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Quick Couplings
Quick couplings let hoses and lines be connected and disconnected quickly without tools.
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Brass Hose Fittings
Brass hose fittings are used to connect a hose to a threaded installation.
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Brass 45° Elbows
Brass 45° elbows are brass fittings used to change direction by 45 degrees on threaded installations.
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Brass Tank Connectors
Brass tank connectors are used to take a sealed pipe outlet through the wall of a tank.
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Brass Elbows
Brass elbows are brass fittings used to change direction by 90 degrees on threaded installations.
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Brass Hose Connectors
Brass hose connectors are used to join two hoses or to join a hose to a line.
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Brass Conical Unions
Brass conical unions provide a tight, removable connection on threaded pipes through a conical seat.
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Brass Plugs and Caps
Brass plugs and caps are used to close the ends of threaded pipes and fittings.
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Brass Crosses
Brass crosses are brass fittings that split flow in four directions on threaded installations.
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Brass Street Elbows
Brass street elbows are brass elbows with one female and one male threaded end.
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Brass Reducing Sockets
Brass reducing sockets are female threaded brass fittings that join two pipes of different sizes.
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Brass Sockets
Brass sockets are female threaded brass fittings that join two pipes in a straight line.
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Brass Nipples
Brass nipples are brass pieces with male threads on both ends that connect two female threaded fittings.
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Brass Reducing Nipples
Brass reducing nipples are brass pieces with male threads of different sizes on each end, used to change pipe size.
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Brass Reducing Bushes
Brass reducing bushes are brass fittings with male and female threads used to change pipe size.
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Brass Tees
Brass tees are brass fittings that split flow in three directions on threaded installations.
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Brass Hex Nipples
Brass hex nipples are brass fittings with a hexagon centre, used to join two threaded parts.
Details →Get a quote for your project
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