Compression Fittings

What are compression fittings?
Suitable for use in both commercial and residential applications, brass and copper compression fittings are an easy and practical plumbing method for both DIY and professional plumbers. Available in a variety of standard sizes each in different profiles such as straight connectors, 90-degree elbow, equal tee as well as reducing fittings from one size to another. Connecting copper pipe is easy with the range of fittings available with minimal effort.

How do compression fittings work?
Standard compression fittings are simple and easy to use fitting as simple as the name sounds. Made up of three basic pieces, a compression fitting uses a threaded nut with a hole in that tightens down to the compression fittings body. This tightens down over a small typically brass ring called an Olive that is placed between the nut and the body of the fitting. This olive is compressed by the tightening of the nut to the body creating a sealed joint.

What size do I need?
Always check the exact size of the pipe or fitting to be used when plumbing and a range of metric and imperial fittings are available and ensuring the correct size is selected is key to making an exact and well-sealed joint.

Using Compression Fittings
Most standard compression fittings just require two spanners to install, these can either be fixed or adjustable spanners used to tighten the fittings nut down for the best seal. PTFE tape may also be used over the fittings thread to give the best seal and limit the risk of leaking over time.

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Description Price Compression Connection Pipe Diameter Fitting Type Material Threaded Connection Fitting Direction Thread Size Thread Standard Gender
RS Stock No. 178-0065
Mfr. Part No.003682
BrandWatts
£4.15
Each
Units
- - Brass - - M1/2 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 178-0067
Mfr. Part No.003683
BrandWatts
£6.08
Each
Units
- - Brass - - M1/2 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 178-0076
Mfr. Part No.003637
BrandWatts
£38.38
Each
Units
- - Brass - - M1 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 178-0068
Mfr. Part No.003684
BrandWatts
£7.77
Each
Units
- - Brass - - M1/2 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 178-0073
Mfr. Part No.003634
BrandWatts
£17.92
Each
Units
- - Brass - - M1 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 178-0070
Mfr. Part No.003686
BrandWatts
£13.00
Each
Units
- - Brass - - M1/2 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 178-0079
Mfr. Part No.141806
BrandWatts
£4.54
Each
Units
- - Brass - - 1/2in - -
RS Stock No. 178-0077
Mfr. Part No.003638
BrandWatts
£42.23
Each
Units
- - Brass - - M1 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 178-0075
Mfr. Part No.003636
BrandWatts
£30.23
Each
Units
- - Brass - - M1 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 178-0082
Mfr. Part No.141809
BrandWatts
£4.54
Each
Units
- - Brass - - 1/2in - -
RS Stock No. 178-0072
Mfr. Part No.003633
BrandWatts
£12.15
Each
Units
- - Brass - - M1 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 178-0069
Mfr. Part No.003685
BrandWatts
£10.23
Each
Units
- - Brass - - M1/2 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 178-0074
Mfr. Part No.003635
BrandWatts
£24.23
Each
Units
- - Brass - - M1 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 178-0081
Mfr. Part No.141808
BrandWatts
£4.54
Each
Units
- - Brass - - 1/2in - -
RS Stock No. 178-0071
Mfr. Part No.003687
BrandWatts
£16.46
Each
Units
- - Brass - - M1/2 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 178-0080
Mfr. Part No.141807
BrandWatts
£4.54
Each
Units
- - Brass - - 1/2in - -