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. 432-0285
BrandRS PRO
TWD180.00
Each (In a Pack of 2)
units
10mm Coupler Brass 1/4 in BSPP Male Straight 1/4in BSPP Male
RS Stock No. 432-4906
Mfr. Part No.EEM12-316
BrandParker
TWD1,127.00
Each
units
- Elbow - - 90° - - -
RS Stock No. 231-4935
Mfr. Part No.0105 04 10
BrandLegris
TWD62.00
Each (In a Pack of 5)
units
4mm Coupler Brass 1/8 in BSPT Male Straight 1/8in BSPT Male
RS Stock No. 295-2688
Mfr. Part No.1816 10 00
BrandLegris
TWD1,626.00
Each
units
- Coupler - - Straight - - -
RS Stock No. 439-414
Mfr. Part No.1805 06 13
BrandLegris
TWD544.00
Each
units
- Coupler - 1/4 in BSPT Male Straight 1/4in BSPT -
RS Stock No. 439-751
Mfr. Part No.0109 04 13
BrandLegris
TWD119.60
Each (In a Pack of 5)
units
4mm Elbow Brass 1/4 in BSPT Male 90° 1/4in BSPT Male
RS Stock No. 432-0308
BrandRS PRO
TWD99.00
Each (In a Pack of 2)
units
15mm Coupler Brass 1/4 in BSPP Male Straight 1/4in BSPP Male
RS Stock No. 293-6636
Mfr. Part No.0102 10 00
BrandLegris
TWD276.80
Each (In a Pack of 5)
units
10mm Equal Elbow Brass - 90° - - -
RS Stock No. 439-925
Mfr. Part No.0106 08 00
BrandLegris
TWD97.40
Each (In a Pack of 5)
units
8mm Equal End Coupler Brass - Straight - - -
RS Stock No. 439-830
Mfr. Part No.0104 06 00
BrandLegris
TWD152.00
Each (In a Pack of 5)
units
6mm Equal Tee Brass - - - - -
RS Stock No. 439-868
Mfr. Part No.0102 04 00
BrandLegris
TWD122.20
Each (In a Pack of 5)
units
4mm Equal Elbow Brass - 90° - - -
RS Stock No. 203-8603
BrandRS PRO
TWD915.00
Each
units
42mm Coupler Brass - Straight - - -
RS Stock No. 231-4985
Mfr. Part No.0105 10 13
BrandLegris
TWD102.40
Each (In a Pack of 5)
units
10mm Coupler Brass 1/4 in BSPT Male Straight 1/4in BSPT Male
RS Stock No. 439-492
Mfr. Part No.1809 08 13
BrandLegris
TWD744.00
Each
units
- Elbow - 1/4 in BSPT Male 90° 1/4in BSPT -
RS Stock No. 203-8625
BrandRS PRO
TWD1,302.00
Each
units
54mm Coupler Brass - Straight - - -
RS Stock No. 293-6585
Mfr. Part No.0109 12 17
BrandLegris
TWD232.80
Each (In a Pack of 5)
units
12mm Elbow Brass 3/8 in BSPT Male 90° 3/8in BSPT Male
RS Stock No. 439-789
Mfr. Part No.0109 12 21
BrandLegris
TWD353.60
Each (In a Pack of 5)
units
12mm Elbow Brass 1/2 in BSPT Male 90° 1/2in BSPT Male
RS Stock No. 178-0065
Mfr. Part No.003682
BrandWatts
TWD222.00
Each
units
- - Brass - - M1/2 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 432-0415
Mfr. Part No.721009
TWD532.00
Each (In a Pack of 2)
units
28mm Equal Tee Brass - - - - -
RS Stock No. 295-2694
Mfr. Part No.1802 10 00
BrandLegris
TWD1,395.00
Each
units
- Elbow - - 90° - - -