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 Connection 1 Fitting Type Connection 2 Connection 3 Material Fitting Direction
RS Stock No. 203-9022
BrandRS PRO
£1.97
Each (In a Pack of 2)
Units
1/2 in BSP Male Reducer Bush 1/4 in BSP Female - Brass Straight
RS Stock No. 203-9016
BrandRS PRO
£1.705
Each (In a Pack of 2)
Units
3/8 in BSP Male Reducer Bush 1/4 in BSP Female - Brass Straight
RS Stock No. 798-331
BrandRS PRO
£2.195
Each (In a Pack of 2)
Units
3/4 in BSP Male Reducer Bush 1/2 in BSP Female - Brass Straight
RS Stock No. 297-2250
BrandRS PRO
£5.095
Each (In a Pack of 2)
Units
1/2 in BSPT Male Nipple 1/2 in BSPT Male - Bronze Straight
RS Stock No. 203-9044
BrandRS PRO
£4.035
Each (In a Pack of 2)
Units
1 in BSP Male Reducer Bush 1/2 in BSP Female - Brass Straight
RS Stock No. 203-9038
BrandRS PRO
£1.84
Each (In a Pack of 2)
Units
1/2 in BSP Male Reducer Bush 3/8 in BSP Female - Brass Straight
RS Stock No. 297-2159
BrandRS PRO
£6.40
Each (In a Pack of 2)
Units
1/2 in BSPP Male Elbow 1/2 in BSPP Female - Bronze 90°
RS Stock No. 297-2222
BrandRS PRO
£5.335
Each (In a Pack of 2)
Units
1 in BSPT Male Reducer Bush 3/4 in BSPP Female - Bronze Straight
RS Stock No. 784-5702
BrandRS PRO
£3.28
Each
Units
Capillary Draining Tap Hose Spigot - Brass Elbow
RS Stock No. 297-2238
BrandRS PRO
£5.98
Each (In a Pack of 2)
Units
3/4 in BSPP Female Coupler 3/4 in BSPP Female - Bronze Straight
RS Stock No. 297-2216
BrandRS PRO
£5.765
Each (In a Pack of 2)
Units
1 in BSPT Male Reducer Bush 1/2 in BSPP Female - Bronze Straight
RS Stock No. 297-2200
BrandRS PRO
£3.40
Each (In a Pack of 2)
Units
3/4 in BSPT Male Reducer Bush 1/2 in BSPP Female - Bronze Straight
RS Stock No. 297-2301
BrandRS PRO
£3.084
Each (In a Pack of 5)
Units
3/4 in BSPT Male Plug - - Bronze Straight
RS Stock No. 297-2698
BrandRS PRO
£9.99
Each (In a Pack of 2)
Units
3/4 in BSPP Male Elbow 3/4 in BSPP Female - Bronze 90°
RS Stock No. 784-5324
BrandRS PRO
£14.33
1 Pair
Pair(s)
Threaded 7.6 mm x 14.9 mm Ceramic Tap Gland - - Brass Straight
RS Stock No. 297-2193
BrandRS PRO
£12.91
Each (In a Pack of 2)
Units
1 in BSPP Female Equal Tee 1 in BSPP Female 1 in BSPP Female Brass Tee
RS Stock No. 297-2317
BrandRS PRO
£4.234
Each (In a Pack of 5)
Units
1 in BSPT Male Plug - - Brass Straight
RS Stock No. 297-2137
BrandRS PRO
£6.335
Each (In a Pack of 2)
Units
3/4 in BSPP Female Elbow 3/4 in BSPP Female - Brass 90°
RS Stock No. 176-1081
BrandRS PRO
£2.754
Each (In a Pack of 10)
Units
3/8 in BSPP Female Elbow 3/8 in BSPP Female - Brass Elbow
RS Stock No. 176-1097
BrandRS PRO
£5.574
Each (In a Pack of 10)
Units
1/2 in BSPP Female Equal Tee 1/2 in BSPP Female 1/2 in BSPP Female Brass Tee
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