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. 432-4681
Mfr. Part No.SCM6-316
BrandParker
TWD420.00
Each
units
- Union - - Straight - - -
RS Stock No. 234-8843
Mfr. Part No.WU1065
BrandWade
TWD106.50
Each (In a Pack of 2)
units
5/16in Coupler Brass 1/4 in BSPP Male Straight 1/4in BSPP Male
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. 796-795
BrandRS PRO
TWD112.50
Each (In a Pack of 2)
units
10mm Coupler Brass 3/8 in BSPP Male Straight 3/8in BSPP Male
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. 439-666
Mfr. Part No.0101 06 13
BrandLegris
TWD105.20
Each (In a Pack of 5)
units
6mm Coupler Brass 1/4 in BSPP Male Straight 1/4in BSPP Male
RS Stock No. 432-0320
BrandRS PRO
TWD113.00
Each (In a Pack of 2)
units
15mm Coupler Brass 3/8 in BSPP Male Straight 3/8in BSPP Male
RS Stock No. 178-0067
Mfr. Part No.003683
BrandWatts
TWD274.00
Each
units
- - Brass - - M1/2 (Outlet) in, MF3/4 (Manifold) in - Female, 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. 293-6642
Mfr. Part No.0106 10 00
BrandLegris
TWD154.60
Each (In a Pack of 5)
units
10mm Equal End Coupler Brass - Straight - - -
RS Stock No. 432-0465
Mfr. Part No.717018
TWD157.00
Each (In a Pack of 2)
units
22mm Coupler Brass 3/4 in BSP Male Elbow 3/4in BSP Male
RS Stock No. 369-1609
BrandRS PRO
TWD127.00
Each (In a Pack of 2)
units
15mm End Stop Brass - - - - -
RS Stock No. 432-0421
BrandRS PRO
TWD375.00
Each (In a Pack of 2)
units
22 x 15 x 22mm Reducer 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. 432-4811
Mfr. Part No.ETM6-316
BrandParker
TWD801.00
Each
units
- Union - - Tee - - -
RS Stock No. 295-2880
Mfr. Part No.1810 10 00
BrandLegris
TWD283.00
Each (In a Pack of 5)
units
- Sleeve Nut - M16 x 1.5 - M16 x 1.5 Metric -
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. 432-4805
Mfr. Part No.8ET8-316
BrandParker
TWD1,594.00
Each
units
- Union - - Tee 3/4-20 - -
RS Stock No. 439-773
Mfr. Part No.0109 08 13
BrandLegris
TWD133.40
Each (In a Pack of 5)
units
8mm Elbow Brass 1/4 in BSPT Male 90° 1/4in BSPT Male
RS Stock No. 285-8788
BrandRS PRO
TWD413.00
Each
units
15mm Wall Plate Elbow Adapter Brass 1/2 in BSPP Female 90° 1/2in BSPP Female