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. 285-8873
BrandRS PRO
TWD697.00
Each
units
28mm Coupler Brass - Elbow - - -
RS Stock No. 432-0364
BrandRS PRO
TWD422.00
Each
units
28mm Tank Coupler Brass - Straight - - -
RS Stock No. 439-644
Mfr. Part No.0101 06 10
BrandLegris
TWD95.80
Each (In a Pack of 5)
units
6mm Coupler Brass 1/8 in BSPP Male Straight 1/8in BSPP Male
RS Stock No. 295-2880
Mfr. Part No.1810 10 00
BrandLegris
TWD283.40
Each (In a Pack of 5)
units
- Sleeve Nut - M16 x 1.5 - M16 x 1.5 Metric -
RS Stock No. 234-8786
Mfr. Part No.WU1043
BrandWade
TWD117.50
Each (In a Pack of 2)
units
1/4in Coupler Brass - Straight - - -
RS Stock No. 432-4760
Mfr. Part No.M12MSC1/2N-316
BrandParker
TWD616.00
Each
units
- Coupler - 1/2 in NPT Straight 1/2in NPT -
RS Stock No. 439-745
Mfr. Part No.0109 08 10
BrandLegris
TWD127.40
Each (In a Pack of 5)
units
8mm Elbow Brass 1/8 in BSPT Male 90° 1/8in BSPT Male
RS Stock No. 439-414
Mfr. Part No.1805 06 13
BrandLegris
TWD545.00
Each
units
- Coupler - 1/4 in BSPT Male Straight 1/4in BSPT -
RS Stock No. 432-0415
Mfr. Part No.721009
TWD566.00
Each (In a Pack of 2)
units
28mm Equal Tee Brass - - - - -
RS Stock No. 285-8788
BrandRS PRO
TWD412.00
Each
units
15mm Wall Plate Elbow Adapter Brass 1/2 in BSPP Female 90° 1/2in BSPP Female
RS Stock No. 439-773
Mfr. Part No.0109 08 13
BrandLegris
TWD134.20
Each (In a Pack of 5)
units
8mm Elbow Brass 1/4 in BSPT Male 90° 1/4in BSPT Male
RS Stock No. 285-8952
BrandRS PRO
TWD457.00
Each
units
22 x 22 x 15mm Reducer Tee Brass - - - - -
RS Stock No. 295-2593
Mfr. Part No.1805 10 17
BrandLegris
TWD732.00
Each
units
- Coupler - 3/8 in BSPT Male Straight 3/8in BSPT -
RS Stock No. 231-4963
Mfr. Part No.0105 06 13
BrandLegris
TWD64.80
Each (In a Pack of 5)
units
6mm Coupler Brass 1/4 in BSPT Male Straight 1/4in BSPT Male
RS Stock No. 234-9149
Mfr. Part No.WU2051
BrandWade
TWD511.50
Each (In a Pack of 2)
units
1/2in Tee Brass - - - - -
RS Stock No. 796-802
BrandRS PRO
TWD118.50
Each (In a Pack of 2)
units
10mm Coupler Brass 1/2 in BSPP Male Straight 1/2in BSPP Male
RS Stock No. 796-868
BrandRS PRO
TWD366.00
Each
units
28 mm x 1 in Coupler Brass 1 in BSPP Male Straight 1in BSPP Male
RS Stock No. 231-5089
Mfr. Part No.1816 06 00
BrandLegris
TWD1,366.00
Each
units
- Coupler - - Straight - - -
RS Stock No. 439-543
Mfr. Part No.1806 12 00
BrandLegris
TWD1,263.00
Each
units
- Coupler - - Straight - - -
RS Stock No. 439-880
Mfr. Part No.0102 08 00
BrandLegris
TWD177.40
Each (In a Pack of 5)
units
8mm Equal Elbow Brass - 90° - - -