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. 369-1542
BrandRS PRO
PHP103.135
Each (In a Pack of 2)
units
15mm Coupler Brass 1/2 in BSPP Male Straight 1/2in BSPP Male
RS Stock No. 432-0291
BrandRS PRO
PHP152.275
Each (In a Pack of 2)
units
10mm Coupler Brass 1/2 in BSPP Male Straight 1/2in BSPP Male
RS Stock No. 798-094
BrandRS PRO
PHP541.96
Each
units
22 x 22mm Coupler Brass 3/4 in BSPP Male Straight 3/4in BSPP Male
RS Stock No. 432-0320
BrandRS PRO
PHP210.315
Each (In a Pack of 2)
units
15mm Coupler Brass 3/8 in BSPP Male Straight 3/8in BSPP Male
RS Stock No. 285-8845
BrandRS PRO
PHP169.465
Each (In a Pack of 2)
units
15mm Coupler Brass - Elbow - - -
RS Stock No. 369-1520
BrandRS PRO
PHP110.215
Each (In a Pack of 2)
units
15mm Coupler Brass - Straight - - -
RS Stock No. 369-1621
BrandRS PRO
PHP134.275
Each (In a Pack of 2)
units
15mm Coupler Brass - Elbow - - -
RS Stock No. 796-751
BrandRS PRO
PHP256.015
Each (In a Pack of 2)
units
12mm Coupler Brass - Straight - - -
RS Stock No. 225-7551
BrandRS PRO
PHP2,878.47
Each
units
35mm Deep Seal P Copper 1-1/4 in BSP Female - 1-1/4in BSP Female
RS Stock No. 285-8687
BrandRS PRO
PHP136.095
Each (In a Pack of 2)
units
15mm Coupler Brass 1/2 in BSPP Male Straight 1/2in BSPP Male
RS Stock No. 432-0308
BrandRS PRO
PHP212.74
Each (In a Pack of 2)
units
15mm Coupler Brass 1/4 in BSPP Male Straight 1/4in BSPP Male
RS Stock No. 225-7567
BrandRS PRO
PHP3,072.61
Each
units
42mm Deep Seal P Copper 1-1/2 in BSP Female - 1-1/2in BSP Female
RS Stock No. 432-0358
BrandRS PRO
PHP257.635
Each (In a Pack of 2)
units
28mm Coupler Brass 1 in BSPP Male Straight 1in BSPP Male
RS Stock No. 432-0336
BrandRS PRO
PHP170.475
Each (In a Pack of 2)
units
15mm Coupler Brass 3/4 in BSPP Male Straight 3/4in BSPP Male
RS Stock No. 432-0392
BrandRS PRO
PHP462.69
Each (In a Pack of 2)
units
28mm Elbow Brass - 90° - - -
RS Stock No. 432-0285
BrandRS PRO
PHP229.93
Each (In a Pack of 2)
units
10mm Coupler Brass 1/4 in BSPP Male Straight 1/4in BSPP Male
RS Stock No. 285-8744
BrandRS PRO
PHP287.16
Each (In a Pack of 2)
units
15mm Tap Coupler Brass 1/2 in BSPP Female Straight 1/2in BSPP Female
RS Stock No. 432-0263
BrandRS PRO
PHP292.995
Each (In a Pack of 2)
units
22 x 15mm Coupler Brass - Straight - - -
RS Stock No. 285-8693
BrandRS PRO
PHP214.56
Each (In a Pack of 2)
units
22mm Coupler Brass 3/4 in BSPP Male Straight 3/4in BSPP Male
RS Stock No. 432-0443
BrandRS PRO
PHP330.435
Each (In a Pack of 2)
units
15mm Tap Adapter Brass - 90° 1/2in BSP -
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High Quality Water Research Advisory Scheme (WRAS) approved ...
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High Quality Water Research Advisory Scheme (WRAS) approved ...
Description:
High Quality Water Research Advisory Scheme (WRAS) approved type A brass compression fittings and accessoriesSuitable for connecting copper tubes in accordance with BS2871 part 1These fittings are also suitable for connecting low carbon steel tube, stainless steel tube and many ...