Brass & Bronze Threaded Fittings

Threaded joints is a technology that has been designed to join piping systems by coupling thread ended pipes and accessories available as male thread and female thread connector types and selection of thread standards to choose from e.g.: BSP, NPT or G. Threaded joints are mainly used on smaller diameters pipes in non-critical applications such as domestic oil, gas, air conditioning, heating & ventilation installations but can also be seen pneumatic, automotive applications. Threaded fittings are usually made of bronze, brass plastic or cast iron. The most common types of threaded fittings are 90° elbows, 45° elbows, tees, straight fittings, square head plugs, hex head plugs, reducers, adaptors, flanges, caps, bushings. Threaded fittings systems ensure leak-tight connections in all low-pressure, low-temperature installations where vibration is not encountered.

What does DZ on brass fittings mean?

DZ or DZR symbol stamped on brass components means that the part is dezincification resistant. Dezincification is a form of corrosion that can occur within a plumbing and heating system.

How to measure bronze or brass fittings?

To measure the size of male fittings you need to calculate the OD (outside diameter) of the pipe. However, to measure female fittings you need to measure ID (inside diameter) of the pipe.

How to loosen brass fittings that are stuck?

Stuck brass, copper or bronze threaded fittings can be loosened in two ways. Firstly, you need to shut off the supply and scrub away a crusty residue on the outside of the fitting. Once it's done, try using penetration liquid directly on fittings thread and leave it for a while. If it doesn't work, try heating the fitting as the metal expands when heated. An expanded metal will break the sticky residue and let the fitting to move.

Do I need to use an additional washer to seal the connection?

It is always recommended to use some kind of sealing with threaded fittings, no matter if it's a BSPP, BSPT, NPT or any other type of thread. This could be a gasket, washer, sealing tape or sealing liquid.


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Description Price Fitting Type Connection 1 Connection 2 Connection 3 Material Fitting Direction
RS Stock No. 203-9022
BrandRS PRO
£4.44
1 Pack of 2
Pack(s)
Reducer Bush 1/2 in BSP Male 1/4 in BSP Female - Brass Straight
RS Stock No. 203-9016
BrandRS PRO
£3.31
1 Pack of 2
Pack(s)
Reducer Bush 3/8 in BSP Male 1/4 in BSP Female - Brass Straight
RS Stock No. 798-331
BrandRS PRO
£5.22
1 Pack of 2
Pack(s)
Reducer Bush 3/4 in BSP Male 1/2 in BSP Female - Brass Straight
RS Stock No. 297-2250
BrandRS PRO
£11.09
1 Pack of 2
Pack(s)
Nipple 1/2 in BSPT Male 1/2 in BSPT Male - Bronze Straight
RS Stock No. 203-9044
BrandRS PRO
£9.61
1 Pack of 2
Pack(s)
Reducer Bush 1 in BSP Male 1/2 in BSP Female - Brass Straight
RS Stock No. 203-9038
BrandRS PRO
£3.59
1 Pack of 2
Pack(s)
Reducer Bush 1/2 in BSP Male 3/8 in BSP Female - Brass Straight
RS Stock No. 297-2159
BrandRS PRO
£14.41
1 Pack of 2
Pack(s)
Elbow 1/2 in BSPP Male 1/2 in BSPP Female - Bronze 90°
RS Stock No. 297-2222
BrandRS PRO
£11.80
1 Pack of 2
Pack(s)
Reducer Bush 1 in BSPT Male 3/4 in BSPP Female - Bronze Straight
RS Stock No. 784-5702
BrandRS PRO
£2.78
Each
Units
Draining Tap Capillary Hose Spigot - Brass Elbow
RS Stock No. 297-2238
BrandRS PRO
£6.40
Each (In a Pack of 2)
Units
Coupler 3/4 in BSPP Female 3/4 in BSPP Female - Bronze Straight
RS Stock No. 297-2216
BrandRS PRO
£12.31
1 Pack of 2
Pack(s)
Reducer Bush 1 in BSPT Male 1/2 in BSPP Female - Bronze Straight
RS Stock No. 297-2200
BrandRS PRO
£3.765
Each (In a Pack of 2)
Units
Reducer Bush 3/4 in BSPT Male 1/2 in BSPP Female - Bronze Straight
RS Stock No. 297-2301
BrandRS PRO
£3.434
Each (In a Pack of 5)
Units
Plug 3/4 in BSPT Male - - Bronze Straight
RS Stock No. 297-2698
BrandRS PRO
£11.125
Each (In a Pack of 2)
Units
Elbow 3/4 in BSPP Male 3/4 in BSPP Female - Bronze 90°
RS Stock No. 784-5324
BrandRS PRO
£17.05
1 Pair
Pair(s)
7.6 mm x 14.9 mm Ceramic Tap Gland Threaded - - Brass Straight
RS Stock No. 297-2193
BrandRS PRO
£29.00
1 Pack of 2
Pack(s)
Equal Tee 1 in BSPP Female 1 in BSPP Female 1 in BSPP Female Brass Tee
RS Stock No. 297-2317
BrandRS PRO
£4.714
Each (In a Pack of 5)
Units
Plug 1 in BSPT Male - - Brass Straight
RS Stock No. 297-2137
BrandRS PRO
£7.30
Each (In a Pack of 2)
Units
Elbow 3/4 in BSPP Female 3/4 in BSPP Female - Brass 90°
RS Stock No. 176-1019
BrandRS PRO
£1.556
Each (In a Pack of 10)
Units
- - - - - -
RS Stock No. 176-1020
BrandRS PRO
£1.723
Each (In a Pack of 10)
Units
- - - - - -