FITTINGS Compression
Compression and DZR
Our comprehensive range of compression fittings is manufactured to the highest standard in the UK and complies with EN1254-2, providing the reliability, quality, and affordability that our installers and consultants demand.
Compression fittings are designed to join copper pipe and create a mechanical joint upon tightening the nut. They are suitable for hot and cold water services, heating installations, fuel services and industrial engineering applications. The range
includes standard brass fittings, chrome-plated fittings and dezincification resistant (DZR) fittings. Dimensions
Equal fittings with uniform connections are singularly sized. e.g. 15mm. Reduced fittings with two connections are displayed with the largest size first. e.g. 22 x 15mm.
How to to install Compression fittings
Preliminary Information: A. The correct tube and fitting should be selected
B. The sealing surfaces of the tube and fitting, including threads, should be clean and free from damage or contamination
C. Application of a light oil to the threads can be helpful when using 35mm-54mm fittings
Assembly Preparation:
A. Cut the tube square using a clean rotary cutter. If other cutting methods are used, such as a saw or hacksaw, use a clean, fine-toothed blade
B. All burrs must be removed from the tube using a fine-toothed file or a deburring tool
C. Ensure the copper tube is clean, not damaged or oval
Assembling the Fitting and Tube: A. Remove the nut and olive from the fitting B. Put the nut and olive onto the tube
C. Insert the tube into the fitting, ensuring it is up to the tube stop
D. Move the olive and nut down the tube to meet the threads of the fitting
E. Hand tighten the nut to the fitting F. The nut should then be tightened with a spanner
Further Installation Details: • In rare cases there can be a small weep from the joint. If this is the case the nut can be removed, and an approved jointing compound applied to the sealing face before re- tightening the nut. It is also possible to apply PTFE tape to the threads instead
• Ensure the nut is not overtightened. If in doubt, please contact us
• In normal operating conditions, after hand tightening the nut, the number of turns required to form a robust joint would be:
i. 10-28mm ii. 35-54mm
1 turn 3/4 turn
DZR
CORE DZR compression are non-manipulative, dezincification resistant fittings. The DZR alloy is manufactured to stop stress corrosion cracking. The range is suitable for various applications such as central heating systems, chilled water and compressed air lines. They are designed for the jointing of copper tubes to BS EN 1057 copper tube, grades R250 and R290.
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Product Range Brochure
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