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. 293-6642
Mfr. Part No.0106 10 00
BrandLegris
SGD7.40
Each (In a Pack of 5)
units
10mm Equal End Coupler Brass - Straight - - -
RS Stock No. 432-0235
Mfr. Part No.709005
SGD8.015
Each (In a Pack of 2)
units
10mm Coupler Brass - Straight - - -
RS Stock No. 295-2880
Mfr. Part No.1810 10 00
BrandLegris
SGD13.314
Each (In a Pack of 5)
units
- Sleeve Nut - M16 x 1.5 - M16 x 1.5 Metric -
RS Stock No. 295-2896
Mfr. Part No.1810 12 00
BrandLegris
SGD15.62
Each (In a Pack of 5)
units
- Sleeve Nut - M18 x 1.5 - M18 x 1.5 Metric -
RS Stock No. 369-1520
BrandRS PRO
SGD3.80
Each (In a Pack of 2)
units
15mm Coupler Brass - Straight - - -
RS Stock No. 439-622
Mfr. Part No.1804 12 00
BrandLegris
SGD73.19
Each
units
- Tee - - - - - -
RS Stock No. 295-2694
Mfr. Part No.1802 10 00
BrandLegris
SGD66.88
Each
units
- Elbow - - 90° - - -
RS Stock No. 439-672
Mfr. Part No.0101 08 13
BrandLegris
SGD5.36
Each (In a Pack of 5)
units
8mm Coupler Brass 1/4 in BSPP Male Straight 1/4in BSPP Male
RS Stock No. 231-5089
Mfr. Part No.1816 06 00
BrandLegris
SGD64.08
Each
units
- Coupler - - Straight - - -
RS Stock No. 439-919
Mfr. Part No.0106 06 00
BrandLegris
SGD4.098
Each (In a Pack of 5)
units
6mm Equal End Coupler Brass - Straight - - -
RS Stock No. 439-666
Mfr. Part No.0101 06 13
BrandLegris
SGD5.114
Each (In a Pack of 5)
units
6mm Coupler Brass 1/4 in BSPP Male Straight 1/4in BSPP Male
RS Stock No. 798-094
BrandRS PRO
SGD14.12
Each
units
22 x 22mm Coupler Brass 3/4 in BSPP Male Straight 3/4in BSPP Male
RS Stock No. 432-4776
Mfr. Part No.4ET4-316
BrandParker
SGD36.97
Each
units
- Union - - Tee 7/16-20 - -
RS Stock No. 439-492
Mfr. Part No.1809 08 13
BrandLegris
SGD35.09
Each
units
- Elbow - 1/4 in BSPT Male 90° 1/4in BSPT -
RS Stock No. 796-773
BrandRS PRO
SGD5.08
Each (In a Pack of 2)
units
8mm Coupler Brass 1/4 in BSPP Male Straight 1/4in BSPP Male
RS Stock No. 432-4681
Mfr. Part No.SCM6-316
BrandParker
SGD19.39
Each
units
- Union - - Straight - - -
RS Stock No. 285-8873
BrandRS PRO
SGD32.59
Each
units
28mm Coupler Brass - Elbow - - -
RS Stock No. 432-4861
Mfr. Part No.6EE6-316
BrandParker
SGD32.78
Each
units
- Elbow - - 90° 9/16-20 - -
RS Stock No. 796-789
BrandRS PRO
SGD4.09
Each (In a Pack of 2)
units
10mm Coupler Brass 1/4 in BSPP Male Straight 1/4in BSPP Male
RS Stock No. 295-2688
Mfr. Part No.1816 10 00
BrandLegris
SGD77.93
Each
units
- Coupler - - Straight - - -