This page gathers the dimensioned drawings and dimension tables for the whole range of BSP threaded brass fittings sold on Home Invasion: sockets, nipples, reducing bushes, elbows, tees, crosses, nuts, unions and plugs. Each family is presented once, with its drawing, its dimensions by size and a direct link to the product page.
- Find the family in the contents, then the letter of the dimension you need on the drawing (G, ØD, L, E, H, S…).
- Read the value in the matching column of the table, on the row for your thread size.
- The specifications shared by the whole range (material, thread, pressure, certifications) are grouped at the top of the page and are not repeated for each fitting.
Specifications shared by the whole range
All the fittings on this page share the same material, the same thread type and the same operating conditions. This data comes from the manufacturer's technical data sheet.
- Material
- CW617N brass (CuZn40Pb2), an alloy listed on the 4MS positive list for contact with drinking water.
- Thread
- Threaded ends to ISO 228-1 (G thread, also known as BSPP or parallel pipe thread). Only the meter union half ref. 2309 has a taper R end to ISO 7-1, designed to screw onto a steel pipe installation.
- Working pressure
- PN 16 (16 bar).
- Temperatures
- Depending on the sealing method chosen (EPDM flat gasket, conical metal-to-metal seat, PTFE or hemp).
- Applications
- Drinking water supply, general plumbing, heating, ventilation and air conditioning (HVAC). Fluids: drinking water, glycol water and fluids compatible with brass.
- Drinking water certifications
- Complies with the French decree of 25 June 2020 on metallic materials and products in contact with water intended for human consumption, and with the 4MS requirements (European harmonisation of certification rules for materials in contact with drinking water).
- Tightening
- Spanner flats suited to standard spanners on every fitting: dimension S in the tables gives the spanner size.
- Sealing
- Flat, wide gasket seats on male and female ends: flat-gasket sealing is guaranteed from a gasket thickness of 1 mm.
- Installation
- Apply a moderate tightening torque and choose mutually compatible materials to limit the risk of galvanic corrosion (see manufacturer's notice N-1280 and our advice at the bottom of the page).
Reading the dimensions on the drawings
The same letters are used on every drawing on this page. A letter followed by a number (L1, L2, E1, S2…) denotes the same dimension for each end or each part of a multi-piece fitting.
G, G1, G2- Thread size of each end, in inches. On reducing fittings, G1 is the large side and G2 the small side.
ØD- Internal bore diameter for fluid flow, in mm.
L, L1, L2, L3, L4- Thread length (usable screw-in depth) of each end, or length of a section marked on the drawing.
E, E1, E2- Overall length from one end to the other, or from the face of an end to the centreline for elbows and tees. This is the overall envelope dimension.
H, H1, H2- Height from the face of the end to the fitting centreline (elbows, tees, crosses), or across-flats dimension of an internal hexagon (straight union).
S, S1, S2, S3- Across-flats dimension: the spanner size to use. HEX indicates a hexagonal body, OCT an octagonal body.
ØA- Outer diameter of the bearing flange of the flanged lock nut.
U- Thread size of the swivel nut on flat seat unions, in inches.
R- Size of the ISO 7-1 taper thread on the pipe end of the meter union half ref. 2309.
Weight- Unit mass in kilograms.
All dimensions are in millimetres, weights in kilograms, threads in inches.
G thread sizes (ISO 228-1)
Sizes are expressed in inches, a convention inherited from the Whitworth thread: the figure matches neither the outside diameter nor the bore. This table gives the correspondence with the pipe designation in mm used on the product pages, the DN and the actual thread diameter.
| Size | Pipe designation (mm) | DN | Thread outside diameter (mm) | Threads per inch | Pitch (mm) |
|---|---|---|---|---|---|
| 1/8" | 5/10 | DN 6 | 9.73 | 28 | 0.907 |
| 1/4" | 8/13 | DN 8 | 13.16 | 19 | 1.337 |
| 3/8" | 12/17 | DN 10 | 16.66 | 19 | 1.337 |
| 1/2" | 15/21 | DN 15 | 20.96 | 14 | 1.814 |
| 3/4" | 20/27 | DN 20 | 26.44 | 14 | 1.814 |
| 1" | 26/34 | DN 25 | 33.25 | 11 | 2.309 |
| 1"1/4 | 33/42 | DN 32 | 41.91 | 11 | 2.309 |
| 1"1/2 | 40/49 | DN 40 | 47.80 | 11 | 2.309 |
| 2" | 50/60 | DN 50 | 59.61 | 11 | 2.309 |
| 2"1/2 | 66/76 | DN 65 | 75.18 | 11 | 2.309 |
| 3" | 80/90 | DN 80 | 87.88 | 11 | 2.309 |
A taper male R thread (EN 10226 cast iron fittings, steel pipes) screws into a G female thread of the same size: diameters and pitches are identical, only the taper differs. Mixed assemblies of black cast iron and brass, widely used in decoration, are therefore possible with PTFE or hemp sealing.
Straight fittings: sockets and nipples
In-line connecting pieces between two pipes or two fittings of the same size.
Equal Socket F/F with Stopref. 1270
Straight female/female socket with a central stop: both male threads bottom out against it, which guarantees identical engagement on both sides. This is the standard socket for extending a run of threaded pipes or joining two nipples.
Brass Equal Socket with StopView product page
- Type
- Straight female/female socket
- Table dimensions
G,ØD,L,E,S1- Catalogue sizes
- 1/4" – 2"
| G | ØD | L | E | S1 | Weight (kg) | E − 2L |
|---|---|---|---|---|---|---|
| 1/4" | 8.5 | 8 | 18 | HEX | 0.016 | 2 |
| 3/8" | 11 | 8.5 | 19 | HEX | 0.019 | 2 |
| 1/2" | 14.5 | 10 | 22 | HEX | 0.028 | 2 |
| 3/4" | 19.5 | 11 | 24 | HEX | 0.040 | 2 |
| 1" | 25 | 13 | 28.5 | OCT | 0.068 | 2.5 |
| 1"1/4 | 33 | 14 | 30.5 | OCT | 0.103 | 2.5 |
| 1"1/2 | 39 | 15.5 | 34 | OCT | 0.161 | 3 |
| 2" | 50 | 17 | 37 | OCT | 0.232 | 3 |
Column calculated from the manufacturer's dimensions: the length remaining between the two ends when they are screwed fully home, without a gasket, i.e. E minus the thread lengths. Useful for working out the dimension of an assembly.
Equal Nipple M/Mref. 1280
Short tube threaded at both ends with a central hexagon for the spanner. It joins two female fittings (socket, elbow, tee) in the shortest possible way.
Brass Equal NippleView product page
- Type
- Straight male/male nipple
- Table dimensions
G,ØD,L,E- Catalogue sizes
- 1/8" – 2"
| G | ØD | L | E | Weight (kg) | E − 2L |
|---|---|---|---|---|---|
| 1/8" | 5.5 | 6 | 16 | 0.0065 | 4 |
| 1/4" | 8.5 | 8 | 20 | 0.011 | 4 |
| 3/8" | 11 | 8.5 | 22 | 0.019 | 5 |
| 1/2" | 15 | 10 | 25 | 0.028 | 5 |
| 3/4" | 20 | 11 | 27.5 | 0.046 | 5.5 |
| 1" | 26 | 13 | 32 | 0.073 | 6 |
| 1"1/4 | 34 | 14 | 34.5 | 0.111 | 6.5 |
| 1"1/2 | 40 | 15.5 | 38.5 | 0.144 | 7.5 |
| 2" | 51 | 17 | 43 | 0.232 | 9 |
Column calculated from the manufacturer's dimensions: the length remaining between the two ends when they are screwed fully home, without a gasket, i.e. E minus the thread lengths. Useful for working out the dimension of an assembly.
Equal Socket M/Fref. 1281
One male side, one female side, with no change of size: it extends a female fitting or offsets a thread by a few millimetres, for example to bring a thread out through a board or a partition.
Brass Equal Socket M/FView product page
- Type
- Straight male/female socket
- Table dimensions
G,ØD,L1,L2,E- Catalogue sizes
- 1/8" – 2"
| G | ØD | L1 | L2 | E | Weight (kg) | E − L1 − L2 |
|---|---|---|---|---|---|---|
| 1/8" | / | 6 | 6 | 13.5 | 0.0075 | 1.5 |
| 1/4" | / | 8 | 8 | 18 | 0.013 | 2 |
| 3/8" | / | 8.5 | 8.5 | 19 | 0.018 | 2 |
| 1/2" | 14.5 | 10 | 10 | 22 | 0.0265 | 2 |
| 3/4" | 19.5 | 11 | 11 | 24 | 0.040 | 2 |
| 1" | 25 | 13 | 13 | 28.5 | 0.066 | 2.5 |
| 1"1/4 | 33 | 14 | 14 | 30.5 | 0.101 | 2.5 |
| 1"1/2 | 39 | 15.5 | 15.5 | 34 | 0.145 | 3 |
| 2" | 50 | 17 | 17 | 37 | 0.215 | 3 |
Column calculated from the manufacturer's dimensions: the length remaining between the two ends when they are screwed fully home, without a gasket, i.e. E minus the thread lengths. Useful for working out the dimension of an assembly.
Reducing bushes, reducing nipples and insert
Pieces that change diameter or thread type between two fittings.
Reducing Bush M/Fref. 1241
Steps down from a male thread to a smaller female thread in the shortest possible length. It screws directly into a large female fitting.
Brass Reducing Bush M/FView product page
- Type
- Male/female reducing bush
- Table dimensions
G1,G2,L1,L2,E- Catalogue sizes
- 1/4" – 2"
| G1 | G2 | L1 | L2 | E | Weight (kg) |
|---|---|---|---|---|---|
| 1/4" | 1/8" | 8 | / | 12 | 0.0063 |
| 3/8" | 1/8" | 8.5 | / | 13.5 | 0.016 |
| 3/8" | 1/4" | 8.5 | / | 13.5 | 0.010 |
| 1/2" | 1/8" | 10 | 6 | 15 | 0.024 |
| 1/2" | 1/4" | 10 | 8 | 15 | 0.022 |
| 1/2" | 3/8" | 10 | / | 15 | 0.016 |
| 3/4" | 1/4" | 11 | 8 | 16.5 | 0.043 |
| 3/4" | 3/8" | 11 | 8.5 | 16.5 | 0.038 |
| 3/4" | 1/2" | 11 | / | 16.5 | 0.030 |
| 1" | 1/2" | 13 | 10 | 19 | 0.064 |
| 1" | 3/4" | 13 | / | 19 | 0.050 |
| 1"1/4 | 3/4" | 14 | 11 | 20.5 | 0.106 |
| 1"1/4 | 1" | 14 | / | 20.5 | 0.087 |
| 1"1/2 | 1" | 15.5 | 13 | 23 | 0.139 |
| 1"1/2 | 1"1/4 | 15.5 | / | 23 | 0.082 |
| 2" | 1" | 17 | 13 | 26 | 0.215 |
| 2" | 1"1/4 | 17 | 14 | 26 | 0.234 |
| 2" | 1"1/2 | 17 | 15.5 | 26 | 0.191 |
Reducing Nipple M/Mref. 1245
Hexagon nipple with two male thread sizes: it changes diameter between two female fittings.
Brass Reducing NippleView product page
- Type
- Male/male nipple with two sizes
- Table dimensions
G1,G2,ØD,L1,L2,E- Catalogue sizes
- 1/4" – 3"
| G1 | G2 | ØD | L1 | L2 | E | Weight (kg) | E − L1 − L2 |
|---|---|---|---|---|---|---|---|
| 1/4" | 1/8" | 5.5 | 8 | 6 | 18 | 0.010 | 4 |
| 3/8" | 1/8" | 5.5 | 8.5 | 6 | 19.5 | 0.016 | 5 |
| 3/8" | 1/4" | 8.5 | 8.5 | 8 | 21.5 | 0.017 | 5 |
| 1/2" | 1/4" | 8.5 | 10 | 8 | 23 | 0.024 | 5 |
| 1/2" | 3/8" | 11 | 10 | 8.5 | 23.5 | 0.026 | 5 |
| 3/4" | 1/4" | 8.5 | 11 | 8 | 24.5 | 0.039 | 5.5 |
| 3/4" | 3/8" | 11 | 11 | 8.5 | 25 | 0.041 | 5.5 |
| 3/4" | 1/2" | 15 | 11 | 10 | 26.5 | 0.043 | 5.5 |
| 1" | 1/2" | 15 | 13 | 10 | 29 | 0.066 | 6 |
| 1" | 3/4" | 20 | 13 | 11 | 30 | 0.068 | 6 |
| 1"1/4 | 3/4" | 20 | 14 | 11 | 31.5 | 0.101 | 6.5 |
| 1"1/4 | 1" | 26 | 14 | 13 | 33.5 | 0.106 | 6.5 |
| 1"1/2 | 1" | 26 | 15.5 | 13 | 36 | 0.136 | 7.5 |
| 1"1/2 | 1"1/4 | 34 | 15.5 | 14 | 37 | 0.141 | 7.5 |
| 2" | 1"1/4 | 34 | 17 | 14 | 40 | 0.225 | 9 |
| 2" | 1"1/2 | 40 | 17 | 15.5 | 41.5 | 0.226 | 9 |
| 2"1/2 | 2" | 51 | 20 | 17 | 47 | 0.348 | 10 |
| 3" | 2" | 51 | 22 | 17 | 50 | 0.465 | 11 |
| 3" | 2"1/2 | 66.5 | 22 | 20 | 53 | 0.465 | 11 |
Column calculated from the manufacturer's dimensions: the length remaining between the two ends when they are screwed fully home, without a gasket, i.e. E minus the thread lengths. Useful for working out the dimension of an assembly.
Reducing Socket F/Fref. 1240
Socket with two internal threads of different sizes: it joins two male pipes or nipples of different diameters in line.
Brass Reducing Socket F/FView product page
- Type
- Female/female socket with two sizes
- Table dimensions
G1,G2,ØD,L1,L2,E- Catalogue sizes
- 1/4" – 2"
| G1 | G2 | ØD | L1 | L2 | E | Weight (kg) | E − L1 − L2 |
|---|---|---|---|---|---|---|---|
| 1/4" | 1/8" | 5.5 | 8 | 6 | 16 | 0.0145 | 2 |
| 3/8" | 1/8" | 5.5 | 8.5 | 6 | 16.5 | 0.017 | 2 |
| 3/8" | 1/4" | 8.5 | 8.5 | 8 | 18.5 | 0.019 | 2 |
| 1/2" | 1/4" | 8.5 | 10 | 8 | 20 | 0.026 | 2 |
| 1/2" | 3/8" | 11 | 10 | 8.5 | 20.5 | 0.026 | 2 |
| 3/4" | 1/4" | 8.5 | 11 | 8 | 21 | 0.035 | 2 |
| 3/4" | 3/8" | 11 | 11 | 8.5 | 21.5 | 0.036 | 2 |
| 3/4" | 1/2" | 14.5 | 11 | 10 | 23 | 0.040 | 2 |
| 1" | 1/2" | 14.5 | 13 | 10 | 25.5 | 0.061 | 2.5 |
| 1" | 3/4" | 19.5 | 13 | 11 | 26.5 | 0.063 | 2.5 |
| 1"1/4 | 3/4" | 19.5 | 14 | 11 | 27.5 | 0.091 | 2.5 |
| 1"1/4 | 1" | 25 | 14 | 13 | 29.5 | 0.099 | 2.5 |
| 1"1/2 | 1" | 25 | 15.5 | 13 | 31.5 | 0.142 | 3 |
| 1"1/2 | 1"1/4 | 33 | 15.5 | 14 | 32.5 | 0.150 | 3 |
| 2" | 1"1/4 | 39 | 17 | 15.5 | 35.5 | 0.227 | 3 |
Column calculated from the manufacturer's dimensions: the length remaining between the two ends when they are screwed fully home, without a gasket, i.e. E minus the thread lengths. Useful for working out the dimension of an assembly.
Reducing Nipple M/Fref. 1247
Male large side, female small side: it reduces a large female fitting to accept a smaller pipe or nipple.
Brass Reducing Nipple M/FView product page
- Type
- Nipple with male large side, female small side
- Table dimensions
G1,G2,ØD,L1,L2,E- Catalogue sizes
- 1/4" – 2"
| G1 | G2 | ØD | L1 | L2 | E | Weight (kg) | E − L1 − L2 |
|---|---|---|---|---|---|---|---|
| 1/4" | 1/8" | 5.5 | 8 | 6 | 15.5 | 0.010 | 1.5 |
| 3/8" | 1/8" | 5.5 | 8.5 | 6 | 16 | 0.017 | 1.5 |
| 3/8" | 1/4" | 8.5 | 8.5 | 8 | 18.5 | 0.018 | 2 |
| 1/2" | 1/4" | 8.5 | 10 | 8 | 20 | 0.027 | 2 |
| 1/2" | 3/8" | 11 | 10 | 8.5 | 20.5 | 0.025 | 2 |
| 3/4" | 1/4" | 8.5 | 11 | 8 | 21 | 0.045 | 2 |
| 3/4" | 3/8" | 11 | 11 | 8.5 | 21.5 | 0.043 | 2 |
| 3/4" | 1/2" | 14.5 | 11 | 10 | 23 | 0.041 | 2 |
| 1" | 1/2" | 14.5 | 13 | 10 | 25 | 0.069 | 2 |
| 1" | 3/4" | 19.5 | 13 | 11 | 26 | 0.065 | 2 |
| 1"1/4 | 3/4" | 19.5 | 14 | 11 | 27 | 0.108 | 2 |
| 1"1/4 | 1" | 25 | 14 | 13 | 29.5 | 0.105 | 2.5 |
| 1"1/2 | 1" | 25 | 15.5 | 13 | 31 | 0.147 | 2.5 |
| 1"1/2 | 1"1/4 | 33 | 15.5 | 14 | 32 | 0.127 | 2.5 |
| 2" | 1"1/4 | 33 | 17 | 14 | 33.5 | 0.242 | 2.5 |
| 2" | 1"1/2 | 39 | 17 | 15.5 | 35.5 | 0.233 | 3 |
Column calculated from the manufacturer's dimensions: the length remaining between the two ends when they are screwed fully home, without a gasket, i.e. E minus the thread lengths. Useful for working out the dimension of an assembly.
Reducing Nipple F/Mref. 1246
Female large side, male small side: it accepts a large male pipe and comes out as a smaller male thread.
Brass Reducing Nipple F/MView product page
- Type
- Nipple with female large side, male small side
- Table dimensions
G1,G2,ØD,L1,L2,E- Catalogue sizes
- 1/4" – 2"
| G1 | G2 | ØD | L1 | L2 | E | Weight (kg) | E − L1 − L2 |
|---|---|---|---|---|---|---|---|
| 1/4" | 1/8" | 5.5 | 8 | 6 | 16 | 0.0115 | 2 |
| 3/8" | 1/8" | 5.5 | 8.5 | 6 | 16.5 | 0.0145 | 2 |
| 3/8" | 1/4" | 8.5 | 8.5 | 8 | 18.5 | 0.0155 | 2 |
| 1/2" | 1/4" | 8.5 | 10 | 8 | 20.5 | 0.0235 | 2.5 |
| 1/2" | 3/8" | 11 | 10 | 8.5 | 21 | 0.0255 | 2.5 |
| 3/4" | 1/4" | 8.5 | 11 | 8 | 21.5 | 0.033 | 2.5 |
| 3/4" | 3/8" | 11 | 11 | 8.5 | 22 | 0.035 | 2.5 |
| 3/4" | 1/2" | 15 | 11 | 10 | 23.5 | 0.037 | 2.5 |
| 1" | 1/2" | 15 | 13 | 10 | 26 | 0.059 | 3 |
| 1" | 3/4" | 20 | 13 | 11 | 27 | 0.061 | 3 |
| 1"1/4 | 3/4" | 20 | 14 | 11 | 28 | 0.091 | 3 |
| 1"1/4 | 1" | 26 | 14 | 13 | 30 | 0.095 | 3 |
| 1"1/2 | 1" | 26 | 15.5 | 13 | 31.5 | 0.133 | 3 |
| 1"1/2 | 1"1/4 | 34 | 15.5 | 14 | 32.5 | 0.138 | 3 |
| 2" | 1"1/4 | 34 | 17 | 14 | 34.5 | 0.207 | 3.5 |
| 2" | 1"1/2 | 40 | 17 | 15.5 | 36 | 0.208 | 3.5 |
Column calculated from the manufacturer's dimensions: the length remaining between the two ends when they are screwed fully home, without a gasket, i.e. E minus the thread lengths. Useful for working out the dimension of an assembly.
Reducing Bush M/F, short insertref. 1605
Very short reducing ring, screwed into a female fitting to accept a smaller male thread. Internal hexagon for tightening with an Allen key.
Brass Reducing Bush M/FView product page
- Type
- Male/female reducing ring
- Table dimensions
G1,G2,L1,L2,S- Catalogue sizes
- 1/8" – 1"1/4
| G1 | G2 | L1 | L2 | S | Weight (kg) |
|---|---|---|---|---|---|
| 1/8" | 1/4" | 8.5 | 2 | 5 | 0.003 |
| 1/4" | 3/8" | 9.5 | 2.5 | 8 | 0.005 |
| 1/4" | 1/2" | 8.5 | 1.8 | 7 | 0.012 |
| 3/8" | 1/2" | 10 | 1.7 | 10 | 0.007 |
| 3/8" | 3/4" | 10.5 | 2 | 12 | 0.023 |
| 1/2" | 3/4" | 11 | 1.7 | 13 | 0.016 |
| 1/2" | 1" | 11 | 2.6 | 13 | 0.042 |
| 3/4" | 1" | 13 | 2 | 17 | 0.031 |
| 1" | 1"1/4 | 15 | 3 | 23 | 0.059 |
| 1"1/4 | 1"1/2 | 16 | 3 | 23 | 0.059 |
90° elbows
Right-angle change of direction, in every combination of male and female threads.
90° Elbow F/Fref. 2090
Right-angle elbow with two internal threads: the standard change of direction between two male pipes or nipples.
Brass 90° Elbow F/FView product page
- Type
- Female/female elbow
- Table dimensions
G,ØD,L,H,E- Catalogue sizes
- 3/8" – 2"
| G | ØD | L | H | E | Weight (kg) |
|---|---|---|---|---|---|
| 3/8" | 11 | 8.5 | 18 | 25.5 | 0.033 |
| 1/2" | 14.5 | 10 | 21.5 | 31 | 0.049 |
| 3/4" | 19.5 | 11 | 25 | 37 | 0.079 |
| 1" | 25 | 13 | 30.5 | 45.5 | 0.130 |
| 1"1/4 | 33 | 14 | 36 | 55 | 0.218 |
| 1"1/2 | 39 | 15.5 | 40.75 | 63 | 0.320 |
| 2" | 50 | 17 | 48.5 | 76.5 | 0.500 |
90° Elbow M/Fref. 2092
Elbow with one male end and one female end: it screws directly onto a female fitting and accepts a pipe or a nipple. This is the most widely used elbow in decorative work because it saves a nipple at every corner.
Brass 90° Elbow M/FView product page
- Type
- Male/female elbow
- Table dimensions
G,ØD,L1,L2,E1,E2- Catalogue sizes
- 3/8" – 2"
| G | ØD | L1 | L2 | E1 | E2 | Weight (kg) |
|---|---|---|---|---|---|---|
| 3/8" | 11 | 8.5 | 8.5 | 25.5 | 27.5 | 0.032 |
| 1/2" | 14.5 | 10 | 10 | 31 | 33 | 0.050 |
| 3/4" | 19.5 | 11 | 11 | 37 | 39.5 | 0.081 |
| 1" | 25 | 13 | 13 | 45.5 | 48 | 0.134 |
| 1"1/4 | 33 | 14 | 14 | 55 | 58 | 0.217 |
| 1"1/2 | 39 | 15.5 | 15.5 | 63 | 66.25 | 0.307 |
| 2" | 50 | 17 | 17 | 76.5 | 79.75 | 0.491 |
90° Elbow M/Mref. 294
Elbow with two male threads: it joins two female fittings directly without an intermediate nipple.
Brass 90° Elbow M/MView product page
- Type
- Male/male elbow
- Table dimensions
G,ØD,L,E,H- Catalogue sizes
- 3/8" – 2"
| G | ØD | L | E | H | Weight (kg) |
|---|---|---|---|---|---|
| 3/8" | 11 | 8.5 | 28.5 | 21 | 0.034 |
| 1/2" | 14.6 | 10 | 34.5 | 25 | 0.055 |
| 3/4" | 19.7 | 11 | 41 | 29 | 0.087 |
| 1" | 26 | 13 | 50 | 34.5 | 0.143 |
| 1"1/4 | 34 | 14 | 60.5 | 41 | 0.226 |
| 1"1/2 | 40 | 15.5 | 68.75 | 46 | 0.307 |
| 2" | 51 | 17 | 82.5 | 54 | 0.502 |
Reducing Elbow F/Mref. 2093
Female 3/4" on one side and male 1/2" on the other: it changes direction and diameter in a single piece. Only one size in the catalogue.
Brass Reducing Elbow M/FView product page
- Type
- Elbow from female 3/4" to male 1/2"
- Table dimensions
G1,G2,ØD,L1,L2,E1,E2- Catalogue sizes
- 3/4"
| G1 | G2 | ØD | L1 | L2 | E1 | E2 | Weight (kg) |
|---|---|---|---|---|---|---|---|
| 3/4" | 1/2" | 11 | 8.5 | 8.5 | 30.5 | 37 | 0.032 |
Tees and crosses
Branches with three or four outlets in the same plane.
Equal Tee F/F/Fref. 2130
Tee with three internal threads of the same size in the same plane: branch or tap-off on a line, or node of a pipe structure.
Brass Equal Tee F/F/FView product page
- Type
- Female tee with three equal outlets
- Table dimensions
G,ØD,L,E,H- Catalogue sizes
- 3/8" – 2"
| G | ØD | L | E | H | Weight (kg) |
|---|---|---|---|---|---|
| 3/8" | 11 | 8.5 | 36 | 18 | 0.043 |
| 1/2" | 14.5 | 10 | 43 | 21.5 | 0.065 |
| 3/4" | 19.5 | 11 | 50 | 25 | 0.103 |
| 1" | 25 | 13 | 61 | 30.5 | 0.168 |
| 1"1/4 | 33 | 14 | 72 | 36 | 0.281 |
| 1"1/2 | 39 | 15.5 | 81.5 | 40.75 | 0.410 |
| 2" | 50 | 17 | 97 | 48.5 | 0.628 |
Equal Tee M/M/Mref. 1131
Tee with three male threads: it screws directly into three female fittings without a nipple.
Brass Equal Tee M/M/MView product page
- Type
- Male tee with three equal outlets
- Table dimensions
G,ØD,E,L,H- Catalogue sizes
- 3/8" – 2"
| G | ØD | E | L | H | Weight (kg) |
|---|---|---|---|---|---|
| 3/8" | 11 | 42 | 8.5 | 21 | 0.04 |
| 1/2" | 14.6 | 50 | 10 | 25 | 0.07 |
| 3/4" | 19.7 | 58 | 11 | 29 | 0.12 |
| 1" | 26 | 69 | 13 | 34.5 | 0.19 |
| 1"1/4 | 34 | 82 | 14 | 41 | 0.3 |
| 1"1/2 | 40 | 92 | 15.5 | 46 | 0.38 |
| 2" | 51 | 109 | 17 | 54 | 0.63 |
Cross F/F/F/Fref. 2180
Four internal threads at 90° in the same plane: manifold, crossing of two lines or decorative node of a shelving unit.
Brass Female CrossView product page
- Type
- Female cross with four equal outlets
- Table dimensions
G,ØD,L,H- Catalogue sizes
- 3/8" – 2"
| G | ØD | L | H | Weight (kg) |
|---|---|---|---|---|
| 3/8" | 11 | 8.5 | 36 | 0.056 |
| 1/2" | 14.5 | 10 | 43 | 0.083 |
| 3/4" | 19.5 | 11 | 50 | 0.130 |
| 1" | 25 | 13 | 61 | 0.211 |
| 1"1/4 | 33 | 14 | 72 | 0.353 |
| 1"1/2 | 39 | 15.5 | 81.5 | 0.512 |
| 2" | 50 | 17 | 97 | 0.774 |
Nuts, threaded tubes and wall pass-through
Locking and pass-through pieces: lock nuts, flare nut, wall pass-through tube and water meter connecting tube.
Lock Nutref. 1613
Flat nut screwed onto a male thread to lock a fitting in a given position (orientation of an elbow, adjustment of an extension piece) or to secure an assembly.
Brass Lock NutView product page
- Type
- Flat hexagon nut
- Table dimensions
G,S,L- Catalogue sizes
- 1/4" – 2"
| G | S | L | Weight (kg) |
|---|---|---|---|
| 1/4" | 16 | 3 | 0.0025 |
| 3/8" | 20 | 3.5 | 0.004 |
| 1/2" | 24 | 4 | 0.006 |
| 3/4" | 30 | 5 | 0.010 |
| 1" | 37 | 5 | 0.0135 |
| 1"1/2 | 46 | 6 | 0.022 |
| 1"1/4 | 52 | 6 | 0.026 |
| 2" | 65 | 8 | 0.053 |
Flanged Lock Nutref. 1609
Nut with a wide bearing flange: it clamps a threaded tube against a surface (wall pass-through, board, tank) and spreads the clamping force over a large area. This is the piece of choice for fixing a threaded tube through a board.
Brass Flanged Lock NutView product page
- Type
- Nut with bearing flange
- Table dimensions
G,ØA,L1,L2,S- Catalogue sizes
- 3/8" – 1"
| G | ØA | L1 | L2 | S | Weight (kg) |
|---|---|---|---|---|---|
| 3/8" | 30 | 9 | 7 | 19 | 0.0145 |
| 1/2" | 35 | 10 | 7.5 | 23 | 0.022 |
| 3/4" | 42 | 11 | 8.2 | 29 | 0.032 |
| 1" | 50 | 13 | 9.8 | 36 | 0.051 |
Flare Nutref. 1612
Nut for flared connections on copper pipe: the flared pipe is clamped between the nut and the seat of the fitting. Selection depends on the nut thread and the pipe outside diameter (column ØD).
Brass Flare NutView product page
- Type
- Connection nut for copper pipe
- Table dimensions
G,ØD,L- Catalogue sizes
- 3/8" – 1"1/4
| G | ØD | L | Weight (kg) |
|---|---|---|---|
| 3/8" | 8.2 | ||
| 3/8" | 10.2 | 9.5 | 0.0125 |
| 3/8" | 12.2 | 9.5 | 0.012 |
| 1/2" | 10.2 | 11 | |
| 1/2" | 12.2 | 11 | 0.0185 |
| 1/2" | 14.2 | 11 | 0.018 |
| 1/2" | 16.2 | 11 | 0.017 |
| 3/4" | 12.2 | ||
| 3/4" | 14.2 | 12 | 0.028 |
| 3/4" | 16.2 | 12 | 0.027 |
| 3/4" | 18.2 | 12 | 0.026 |
| 3/4" | 20.3 | 12 | 0.025 |
| 1" | 20.3 | 14 | 0.046 |
| 1" | 22.3 | 14 | 0.045 |
| 1"1/4 * | 26 | 17 | 0.073 |
| 1"1/4 | 32 | 17 | 0.074 |
* Discontinued reference, available while stocks last.
Threaded Barrel Connector, wall pass-throughref. 2310
100 mm tube threaded along its full length: it passes through a wall and is locked on each side with two lock nuts or two flanged lock nuts.
Brass Threaded Barrel ConnectorView product page
- Type
- Tube threaded along its full length
- Table dimensions
G,ØD,L- Catalogue sizes
- 3/8" – 1"
| G | ØD | L | Weight (kg) |
|---|---|---|---|
| 3/8" | 11 | 100 | 0.082 |
| 1/2" | 15 | 100 | 0.107 |
| 3/4" | 20 | 100 | 0.154 |
| 1" | 26 | 100 | 0.216 |
Water Meter Connecting Tube M/Mref. 2311
3/4" male/male tube in the standard water meter lengths: it takes the place of a missing meter and keeps the line closed until the meter is installed. The fixed dimensions on the drawing (17 mm of thread at each end, Ø 20 and Ø 26.5) are common to both lengths.
Brass Meter Connecting Tube 3/4" M/MView product page
- Type
- Male/male 3/4" tube, 110 or 170 mm
- Table dimensions
G,L- Catalogue sizes
- 110 mm, 170 mm
| G | L | Weight (kg) |
|---|---|---|
| 3/4" | 110 | 0.193 |
| 3/4" | 170 | 0.308 |
Unions and union halves
Connections that can be dismantled without unscrewing the line: three-piece unions with flat gasket or conical seat, union halves for meters and appliances.
Flat Seat Union F/F, EPDM gasketref. 2330
Three-piece union (two female ends and a swivel nut) with an EPDM flat gasket: it allows a section of line to be dismantled without unscrewing it. The flat, wide gasket faces tolerate slight misalignment.
Brass Flat Seat Union F/F EPDMView product page
- Type
- Three-piece female/female union
- Table dimensions
G,U,ØD,L1,L2,E,S1,S2- Catalogue sizes
- 1/2" – 1"
| G | U | ØD | L1 | L2 | E | S1 | S2 | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 1/2" | 7/8" | 14.5 | 32.5 | 10 | 32.5 | 23 | 33 | 0.083 |
| 3/4" | 1"1/8 | 19.5 | 38.5 | 11 | 38.5 | 29 | 41 | 0.144 |
| 1" | 1"1/2 | 25 | 44 | 13 | 44 | 36 | 52 | 0.261 |
Flat Seat Union M/F, EPDM gasketref. 2331
Same principle as the F/F union, with one male end and one female end: it screws directly onto a female fitting on one side.
Brass Flat Seat Union M/F EPDMView product page
- Type
- Three-piece male/female union
- Table dimensions
G,U,ØD,L1,L2,L3,L4,S1,S2,S3- Catalogue sizes
- 1/2" – 1"
| G | U | ØD | L1 | L2 | L3 | L4 | S1 | S2 | S3 | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2" | 3/4" | 14.5 | 47.5 | 11 | 10 | 10 | 19 | 29 | 23 | 0.095 |
| 3/4" | 7/8" | 19.5 | 53.5 | 12 | 11 | 10 | 24 | 33 | 29 | 0.114 |
| 1" | 1"1/8 | 25 | 61 | 14 | 13 | 12 | 30 | 41 | 36 | 0.193 |
Union Elbow M/F, conical seatref. 221
Male/female union elbow with a conical metal-to-metal seat, no gasket: sealed by tightening the nut, can be dismantled and set to any orientation. Ideal for connecting an appliance or a tap at an angle.
Brass Union Elbow M/FView product page
- Type
- Male/female union elbow, metal-to-metal seal
- Table dimensions
Ø,G1,G2,E1,E2,L1,L2,L3,H,S1,S2- Catalogue sizes
- 3/8" – 1"1/4
| Ø | G1 | G2 | E1 | E2 | L1 | L2 | L3 | H | S1 | S2 | Weight (kg) * |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/8" | 16 | 15 | 46 | 18 | 11 | 9 | 9 | 55 | 25 | 21 | 0.081 |
| 1/2" | 20 | 19 | 51 | 22 | 12 | 10 | 11 | 63 | 30 | 25 | 0.124 |
| 3/4" | 26 | 25 | 61 | 26 | 13 | 12 | 11 | 74 | 37 | 31 | 0.210 |
| 1" | 33 | 30 | 68 | 34 | 14 | 13 | 17 | 83 | 46 | 37 | 0.310 |
| 1"1/4 | 42 | 39 | 82 | 40 | 17 | 15 | 21 | 100 | 52 | 48 | 0.517 |
Straight Union M/F, conical seatref. 222
Straight male/female union with a conical seat: a dismountable connection of an appliance onto a female fitting, without a gasket. Dimension H1 is the size of the internal hexagon, H2 the across-flats dimension of the nut.
Brass Straight Union Conical M/FView product page
- Type
- Straight male/female union, metal-to-metal seal
- Table dimensions
G,L,L1,L2,H1,H2- Catalogue sizes
- 3/8" – 1"1/4
| G | L | L1 | L2 | H1 | H2 | Weight (kg) * |
|---|---|---|---|---|---|---|
| 3/8" | 39.7 | 10 | 8 | 21 | 24.8 | 0.065 |
| 1/2" | 44.9 | 10 | 8.5 | 25.3 | 30 | 0.097 |
| 3/4" | 52 | 11 | 9.5 | - | 36.9 | 0.164 |
| 1" | 57.9 | 13 | 10 | 36.8 | - | 0.250 |
| 1"1/4 | 69.3 | 16 | 14.5 | 47.8 | - | 0.411 |
Meter Union Half, G threadref. 2308
Union half with swivel nut and parallel male G end: this is the piece screwed onto each side of a water meter, a filter or an appliance so it can be removed without touching the line. Sold individually; allow two pieces per appliance.
Brass Meter Union Half ISO 228-1View product page
- Type
- Union half with swivel nut, male G end
- Table dimensions
G1,G2,ØD,L1,L2,L3,L4,S1,S2- Catalogue sizes
- 3/8" – 2"
| G1 | G2 | ØD | L1 | L2 | L3 | L4 | S1 | S2 | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| 3/8" | 1/2" | 11 | 22 | 9.5 | 10 | 7 | 15 | 23 | 0.036 |
| 1/2" * | 3/4" | 15 | 29 | 10.5 | 13 | 10 | 19 | 29 | 0.062 |
| 3/4" * | 3/4" | 15 | 28.5 | 10.5 | 13 | 10.5 | 19 | 31 | 0.077 |
| 3/4" | 1" | 20 | 27 | 12.5 | 12 | 10 | 24 | 36 | 0.090 |
| 1" | 1"1/4 | 26 | 32 | 13.5 | 14 | 12 | 30 | 45 | 0.150 |
| 1"1/4 | 1"1/2 | 34 | 35 | 15 | 15 | 14 | 39 | 52 | 0.219 |
| 1"1/2 | 2" | 40 | 41 | 16.5 | 17 | 17 | 45 | 64 | 0.340 |
| 2" | 2"1/2 | 51 | 44 | 18 | 19 | 18 | 56 | 80.5 | 0.530 |
* Sizes suited to connecting a water meter 110 to 170 mm long.
Meter Union Half, taper R threadref. 2309
Long version of the meter union half with a taper R end (ISO 7-1) on the pipe side: choose it to connect to a steel pipe installation or to cast iron fittings. Column R gives the size of the taper end, column G that of the nut.
Brass Meter Union Half Long ISO 7-1View product page
- Type
- Union half with swivel nut, taper male end
- Table dimensions
R,G,ØD,L1,L2,L3,L4,S1,S2- Catalogue sizes
- 1/2" – 2"
| R | G | ØD | L1 | L2 | L3 | L4 | S1 | S2 | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| 1/2" * | 3/4" | 15 | 38.5 | 10.5 | 15.5 | 19 | 19 | 30 | 0.081 |
| 3/4" * | 3/4" | 20 | 41.5 | 10 | 17 | 19.5 | 24 | 30 | 0.105 |
| 3/4" | 1" | 20 | 41.5 | 12.5 | 17 | 19.5 | 24 | 37 | 0.129 |
| 1" | 1"1/4 | 25 | 44.5 | 13.5 | 20 | 19.5 | 30 | 46 | 0.198 |
| 1"1/4 | 1"1/2 | 33 | 56 | 16 | 23 | 27 | 38 | 53 | 0.309 |
| 1"1/2 | 2" | 40 | 56 | 16.5 | 23 | 27 | 45 | 65 | 0.395 |
| 2" | 2"1/2 | 50 | 60 | 18 | 27 | 27 | 56 | 81 | 0.627 |
* Sizes suited to connecting a water meter 110 to 170 mm long.
Male and female plugs
Closing off a male or female thread, with a hexagon for the spanner.
Female Plugref. 1300
Internally threaded cap to close off a male thread (pipe end, nipple), with an external hexagon for the spanner. In decorative work, it gives a neat finish to an exposed pipe.
Brass Female PlugView product page
- Type
- Internally threaded hexagon cap
- Table dimensions
G,S,L,E- Catalogue sizes
- 1/8" – 2"
| G | S | L | E | Weight (kg) |
|---|---|---|---|---|
| 1/8" | 13 | 6 | 7.5 | 0.01 |
| 1/4" | 16 | 8 | 10 | 0.01 |
| 3/8" | 19 | 8.5 | 10.5 | 0.01 |
| 1/2" | 23 | 10 | 12 | 0.02 |
| 3/4" | 29 | 11 | 13 | 0.03 |
| 1" | 36 | 13 | 15.5 | 0.05 |
| 1"1/4 | 45 | 14 | 16.5 | 0.07 |
| 1"1/2 | 52 | 15.5 | 18.5 | 0.12 |
| 2" | 64 | 17 | 20 | 0.17 |
Male Plugref. 1291
Plug with a male thread and a hexagon head to close off a female fitting: tee outlet, elbow, socket or cross.
Brass Male PlugView product page
- Type
- Threaded plug with hexagon head
- Table dimensions
G,ØD,S,L,E- Catalogue sizes
- 1/8" – 2"
| G | ØD | S | L | E | Weight (kg) |
|---|---|---|---|---|---|
| 1/8" | 5 | 13 | 5.5 | 9.5 | 0.0063 |
| 1/4" | 8 | 16 | 7.5 | 11.5 | 0.010 |
| 3/8" | 11 | 19 | 8 | 13 | 0.016 |
| 1/2" | 14.5 | 23 | 9.5 | 14.5 | 0.024 |
| 3/4" | 19.5 | 29 | 10.5 | 16 | 0.038 |
| 1" | 25.5 | 36 | 12.5 | 18.5 | 0.061 |
| 1"1/4 | 33.5 | 45 | 13.5 | 20 | 0.096 |
| 1"1/2 | 39 | 52 | 15 | 22.5 | 0.143 |
| 2" | 50 | 64 | 16.5 | 25.5 | 0.232 |
Spanner sizes by thread size
Dimension S (across-flats dimension) taken from the tables on this page for hexagonal or octagonal fittings: this is the open-ended spanner size to allow for. Unions and union halves have their own dimensions S1, S2 and S3 in their table.
| Size | Lock Nut | Flanged Lock Nut | Female Plug | Male Plug |
|---|---|---|---|---|
| 1/8" | – | – | 13 | 13 |
| 1/4" | 16 | – | 16 | 16 |
| 3/8" | 20 | 19 | 19 | 19 |
| 1/2" | 24 | 23 | 23 | 23 |
| 3/4" | 30 | 29 | 29 | 29 |
| 1" | 37 | 36 | 36 | 36 |
| 1"1/4 | 52 | – | 45 | 45 |
| 1"1/2 | 46 | – | 52 | 52 |
| 2" | 65 | – | 64 | 64 |
Typical assemblies with the fittings on this page
Three common assemblies, made up solely of references available in the shop.
Connecting a water meter
Two meter union halves ref. 2308, one on each side of the meter, to fit and remove it without unscrewing the line. Until the meter is fitted, the connecting tube ref. 2311, 110 or 170 mm long, keeps the line closed.
Passing through a wall or a panel
A threaded barrel connector ref. 2310 locked by two flanged lock nuts ref. 1609, one on each side of the wall. The lock nut ref. 1613 serves as an additional locking nut to fix the orientation of a fitting.
Closing off an unused outlet
Male plug ref. 1291 to close a female fitting (tee, cross, socket), female plug ref. 1300 to close the end of a pipe or a nipple.
Using brass fittings correctly
Brass behaves differently from malleable cast iron: softer, more conductive and supplied with a parallel thread, it calls for a few simple precautions to achieve a leak-tight, long-lasting assembly.
Sealing a G thread
A parallel thread is not self-sealing. On unions, union halves and nuts, the flat gasket (or the conical seat) provides the seal: add nothing to the nut thread. On a male/female joint without a seat (nipple in an elbow, pipe in a socket), use PTFE tape (three to four turns in the direction of screwing) or hemp with jointing paste.
Tightening torque
Brass is softer than cast iron: tighten with an open-ended spanner on the flats provided (dimension S), until contact and then a quarter to half a turn more, without forcing. Over-tightening with hemp can crack a female fitting. Never use water pump pliers directly on the threads or on polished surfaces.
Galvanic corrosion
Brass pairs without problem with copper, stainless steel and brass or bronze fittings. Direct, prolonged contact with galvanized steel or cast iron in the presence of water creates a galvanic couple that accelerates corrosion of the steel: on a water installation, limit such contacts or insert a suitable piece. Dry, in decorative use, this mix poses no problem.
Mixing brass and black cast iron
The cast iron fittings in the shop have a taper R/Rp thread (EN 10226) with the same diameters and pitches as the G thread of the brass: a cast iron male screws into a brass female and vice versa. This is what makes two-tone black and gold assemblies possible, much appreciated for shelves, lamps and coat hooks. Seal with PTFE if the assembly carries a fluid.
Drinking water
The CW617N alloy of this range is on the 4MS list and complies with the French decree of 25 June 2020: the fittings are suitable for networks carrying water intended for human consumption. Flush the installation before commissioning. For particularly aggressive water (very soft, high in chlorides), ask for advice: a dezincification-resistant brass (DZR, CW602N) may be preferable.
Temperature and pressure
The range is rated for 16 bar. The maximum temperature depends on the seal: an EPDM flat gasket commonly works from -30 to +120 °C, conical metal-to-metal seats (ref. 221 and 222) have no such limit, PTFE and hemp withstand domestic hot water and heating. Brass is not intended for steam.
Choosing your spanner
Column S in the tables gives the open-ended spanner size directly: for example 23 mm for a 1/2" socket, 29 mm for a 3/4", 36 mm for a 1". Octagonal bodies (OCT) are tightened with an adjustable spanner or a protected pipe wrench.
Appearance and care
Raw brass develops a patina on contact with air and fingers: the gold colour shifts towards a warmer, matt tone. To keep the shine, polish with a copper and brass cleaner then protect with a clear lacquer; for an aged look, let time do its work. The fittings are neither lacquered nor chrome-plated when they leave the factory.
Frequently asked questions
Answers drawn from the manufacturer's data and the tables on this page.
Are the brass fittings compatible with the black cast iron fittings on the site?
Yes. The cast iron fittings have a taper R/Rp thread (EN 10226) with the same diameters and pitches as the G thread to ISO 228-1 of the brass: a cast iron male screws into a brass female and vice versa. Allow for PTFE or hemp if the assembly carries a fluid.
Can these fittings be used for drinking water?
Yes. The CW617N alloy is on the 4MS list and the range complies with the French decree of 25 June 2020 on metallic materials and products in contact with water intended for human consumption.
What pressure and temperature can they withstand?
The range is rated for 16 bar (PN 16). The maximum temperature depends on the sealing method chosen: EPDM flat gasket, conical metal-to-metal seat, PTFE or hemp. The manufacturer does not publish a single temperature for the range.
What do the letters G, ØD, L, E and S on the drawings mean?
G is the thread size in inches, ØD the bore diameter, L the thread length of each end, E the overall length or the dimension from the face of the end to the centreline, S the across-flats dimension that gives the spanner size. The glossary at the top of the page details every letter.
Which spanner is needed to tighten a brass fitting?
An open-ended spanner whose size matches dimension S in the fitting's table, for example 23 mm for a 1/2" socket without stop and 29 mm for a 3/4". The spanner size table groups these values by size.
How do you read the size of a fitting: 1/2", 15/21, DN 15?
These are three designations of the same size: 1/2" is the thread size in inches, 15/21 the pipe designation in mm (inside/outside) used on the product pages, DN 15 the nominal diameter. The thread size table gives all the correspondences.
See also
- View the full brass fittings collection
- Assembly calculation and dimensions of cast iron fittings (Z dimension, thread engagement lengths)
Source of dimensions: Codital technical data sheet "Brass threaded fittings - BSP", revision 0, May 2025. Dimensions are nominal and may change; check the actual part for precision assemblies.