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. 796-751
BrandRS PRO
TWD165.00
Each (In a Pack of 2)
units
12mm Coupler Brass - Straight - - -
RS Stock No. 178-0077
Mfr. Part No.003638
BrandWatts
TWD1,899.00
Each
units
- - Brass - - M1 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 178-0080
Mfr. Part No.141807
BrandWatts
TWD204.00
Each
units
- - Brass - - 1/2in - -
RS Stock No. 369-1609
BrandRS PRO
TWD127.00
Each (In a Pack of 2)
units
15mm End Stop Brass - - - - -
RS Stock No. 178-0082
Mfr. Part No.141809
BrandWatts
TWD204.00
Each
units
- - Brass - - 1/2in - -
RS Stock No. 440-060
Mfr. Part No.0165 08 10
BrandLegris
TWD65.80
Each (In a Pack of 5)
units
8mm Adapter Brass - Straight - - -
RS Stock No. 369-1558
Mfr. Part No.711038
TWD106.50
Each (In a Pack of 2)
units
22mm Coupler Brass 3/4 in BSPP Male Straight 3/4in BSPP Male
RS Stock No. 285-8968
BrandRS PRO
TWD1,229.00
Each
units
28 x 28 x 15mm Reducer Tee Brass - - - - -
RS Stock No. 231-4957
Mfr. Part No.0105 06 10
BrandLegris
TWD59.60
Each (In a Pack of 5)
units
6mm Coupler Brass 1/8 in BSPT Male Straight 1/8in BSPT Male
RS Stock No. 432-0235
Mfr. Part No.709005
TWD161.50
Each (In a Pack of 2)
units
10mm Coupler Brass - Straight - - -
RS Stock No. 295-2694
Mfr. Part No.1802 10 00
BrandLegris
TWD1,395.00
Each
units
- Elbow - - 90° - - -
RS Stock No. 178-0068
Mfr. Part No.003684
BrandWatts
TWD350.00
Each
units
- - Brass - - M1/2 (Outlet) in, MF3/4 (Manifold) in - Female, Male
RS Stock No. 234-9149
Mfr. Part No.WU2051
BrandWade
TWD576.50
Each (In a Pack of 2)
units
1/2in Tee Brass - - - - -
RS Stock No. 439-852
Mfr. Part No.0104 12 00
BrandLegris
TWD339.60
Each (In a Pack of 5)
units
12mm Equal Tee Brass - - - - -
RS Stock No. 234-8865
Mfr. Part No.WU4068/3
BrandWade
TWD145.00
Each (In a Pack of 2)
units
3/8in Coupler Brass 1/4 in BSPP Male Straight 1/4in BSPP Male
RS Stock No. 439-767
Mfr. Part No.0109 06 13
BrandLegris
TWD115.80
Each (In a Pack of 5)
units
6mm Elbow Brass 1/4 in BSPT Male 90° 1/4in BSPT Male
RS Stock No. 432-4681
Mfr. Part No.SCM6-316
BrandParker
TWD420.00
Each
units
- Union - - Straight - - -
RS Stock No. 285-8659
Mfr. Part No.7B4007
TWD101.50
Each (In a Pack of 2)
units
15mm Coupler Brass - Straight - - -
RS Stock No. 432-4653
Mfr. Part No.4SC4-316
BrandParker
TWD428.00
Each
units
- Union - - Straight 7/16-20 - -
RS Stock No. 231-5001
Mfr. Part No.0105 10 21
BrandLegris
TWD160.60
Each (In a Pack of 5)
units
10mm Coupler Brass 1/2 in BSPT Male Straight 1/2in BSPT Male