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. 439-486
Mfr. Part No.1809 06 13
BrandLegris
TWD850.00
Each
units
- Elbow - 1/4 in BSPT Male 90° 1/4in BSPT -
RS Stock No. 295-2622
Mfr. Part No.1805 16 21
BrandLegris
TWD1,385.00
Each
units
- Coupler - 1/2 in BSPT Male Straight 1/2in BSPT -
RS Stock No. 432-0493
Mfr. Part No.720017
TWD116.50
Each (In a Pack of 2)
units
15mm Coupler Brass 1/2 in BSPP Female Elbow 1/2in BSPP Female
RS Stock No. 285-8867
BrandRS PRO
TWD228.00
Each (In a Pack of 2)
units
22mm Coupler Brass - Elbow - - -
RS Stock No. 369-1536
Mfr. Part No.709058
TWD117.50
Each (In a Pack of 2)
units
22mm Coupler Brass - Straight - - -
RS Stock No. 293-6591
Mfr. Part No.0109 16 21
BrandLegris
TWD372.20
Each (In a Pack of 5)
units
16mm Elbow Brass 1/2 in BSPT Male 90° 1/2in BSPT Male
RS Stock No. 798-066
BrandRS PRO
TWD163.50
Each (In a Pack of 2)
units
15mm Coupler Brass 3/4 in BSPP Male Straight 3/4in BSPP Male
RS Stock No. 231-4806
Mfr. Part No.0116 08 00
BrandLegris
TWD160.60
Each (In a Pack of 5)
units
8mm Bulkhead Coupler Brass - Straight - - -
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. 439-509
Mfr. Part No.1809 12 21
BrandLegris
TWD1,496.00
Each
units
- Elbow - 1/2 in BSPT Male 90° 1/2in BSPT -
RS Stock No. 293-6557
Mfr. Part No.0109 10 13
BrandLegris
TWD169.60
Each (In a Pack of 5)
units
10mm Elbow Brass 1/4 in BSPT Male 90° 1/4in BSPT Male
RS Stock No. 295-2650
Mfr. Part No.1809 10 17
BrandLegris
TWD1,079.00
Each
units
- Elbow - 3/8 in BSPT Male 90° 3/8in BSPT -
RS Stock No. 439-672
Mfr. Part No.0101 08 13
BrandLegris
TWD110.80
Each (In a Pack of 5)
units
8mm Coupler Brass 1/4 in BSPP Male Straight 1/4in BSPP Male
RS Stock No. 439-616
Mfr. Part No.1804 08 00
BrandLegris
TWD1,427.00
Each
units
- Tee - - - - - -
RS Stock No. 798-094
BrandRS PRO
TWD304.00
Each
units
22 x 22mm Coupler Brass 3/4 in BSPP Male Straight 3/4in BSPP Male
RS Stock No. 231-4941
Mfr. Part No.0105 12 21
BrandLegris
TWD189.40
Each (In a Pack of 5)
units
12mm Coupler Brass 1/2 in BSPT Male Straight 1/2in BSPT Male
RS Stock No. 285-8845
BrandRS PRO
TWD132.00
Each (In a Pack of 2)
units
15mm Coupler Brass - Elbow - - -
RS Stock No. 234-8893
Mfr. Part No.WU4068/11
BrandWade
TWD281.50
Each (In a Pack of 2)
units
3/8in Coupler Brass 1/2 in BSPP Male Straight 1/2in BSPP Male
RS Stock No. 285-8665
BrandRS PRO
TWD202.50
Each (In a Pack of 2)
units
22mm Coupler Brass - Straight - - -
RS Stock No. 796-896
BrandRS PRO
TWD112.50
Each (In a Pack of 2)
units
10mm Coupler Brass 3/8 in BSPP Female Straight 3/8in BSPP Female