The Lawton ACR 90° long radius elbow (C x C) turns refrigeration copper tube through 90 degrees with a brazed capillary joint. The long radius bend gives smoother refrigerant flow and a lower pressure drop than a short radius elbow, which matters on long pipe runs.
It is a seamless, one-piece fitting made to ASME B16.22 in CW024A copper, cleaned for air conditioning and refrigeration service. Available in 1/4", 3/8", 1/2", 5/8" and 3/4" sizes, covering the liquid and gas lines on split air conditioning systems.
1/4" to 3/4"
Five fitting sizes
90 to 150 bar
MWP up to 100 °C
ASME B16.22
Manufacturing standard
Seamless
One-piece construction
⚠ F-Gas certified engineers only
Brazing and pressure testing on refrigerant pipework must be carried out by suitably F-Gas certified engineers. Flow oxygen-free nitrogen through the pipe while brazing.
⚠ Do not braze close to pressed joints
Heat from brazing can damage the seal of a nearby press fitting. Follow the press fitting manufacturer's minimum brazing distances, or fabricate the brazed section before assembling the pressed joints.
ℹ Part codes
Lawton part codes are RFELLR14 (1/4"), RFELLR38 (3/8"), RFELLR12 (1/2"), RFELLR58 (5/8") and RFELLR34 (3/4").
Key features
↪️
Long radius bend
The long radius pattern reduces pressure drop and turbulence compared with a short radius elbow.
🧱
Seamless one-piece
Seamless, one-piece construction for strength and easier use.
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Clean for ACR
Clean, smooth inner surface with carbon content of 0.38 mg/dm² or less.
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High pressure ratings
Burst pressure from 280 bar (3/4") up to 500 bar (1/4"), with a safety factor of at least 3 on the working pressure.
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Traceable marking
Permanent marking with the Lawton logo and size.
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75-year warranty
75-year warranty from Lawton, subject to its standard terms and conditions.
Technical specification
Fitting
Type
90° long radius elbow, copper x copper (C x C)
Material and build
Material
CW024A copper, 99.90 % copper content (including silver)
Construction
Seamless, one-piece, end-feed capillary fitting
Jointing method
Soldering or brazing
Electrical continuity
Yes
Inner surface quality
Clean and smooth, carbon content ≤ 0.38 mg/dm²
Marking
Permanent marking with Lawton logo and size
Pressure Equipment Directive
Compliant component for PED assemblies
Warranty
75 years, subject to Lawton's standard terms and conditions
Compatible refrigerants
Refrigerants
R32, R134a, R410A, R404A, R407C, R407F, R1234yf, R1234ze, R744 (CO₂) and other common refrigerants
Available sizes and maximum working pressures
Size
Lawton part code
Burst pressure
MWP up to 55 °C and 100 °C
MWP up to 150 °C
1/4"
RFELLR14
500 bar
150 bar
131 bar
3/8"
RFELLR38
360 bar
120 bar
105 bar
1/2"
RFELLR12
320 bar
100 bar
87 bar
5/8"
RFELLR58
300 bar
100 bar
87 bar
3/4"
RFELLR34
280 bar
90 bar
79 bar
Frequently asked questions
Why choose a long radius elbow?
A long radius bend has a gentler curve, which reduces pressure loss and flow restriction in refrigerant lines. It is the better choice where pipe runs are long or pressure drop matters.
Which tube does it fit?
Each elbow fits ACR copper tube of the same nominal outside diameter, for example 1/4" to 3/4" tube to EN 12735-1.
Can I use it with press fittings?
You can combine brazed and pressed joints on one system, but keep to the press fitting manufacturer's minimum distances between a brazed joint and a pressed joint.
Which refrigerants is it suitable for?
Lawton lists R32, R410A, R134a, R404A, R407C, R407F, R1234yf, R1234ze and R744 among the refrigerants its ACR fittings suit. Always check the system design pressure and the unit manufacturer's instructions.
How should I braze it?
Clean the tube and fitting, apply a suitable brazing alloy, and flow oxygen-free nitrogen through the pipe throughout. Use certified F-Gas engineers for refrigerant pipework.
