STAINLESS STEEL LOW PRESSURE BSP FITTINGS

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BSP fittings are a family of fittings used to connect up threaded pipe and equipment. They are manufactured from pipe, bar, hollow bar, castings or forgings.

Stainless Steel BSP Fittings Rangs

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The pipe to be threaded must have a wall thickness of Schedule 40S minimum.
The fittings are used in non-critical, low pressure applications where welding is not possible or required. They therefore provide a relatively low cost method of connection.
BSP fittings are made only in type 316.
BSP fittings are usually fitted with a sealant (paste or tape such as PTFE) and are considered to be permanent pipe-work.
Low Pressure BSP Fittings are rated at 150lb and are made to wrought iron specification BS1740. BSP fittings are made only in type 316.
They are provided with a Certificate of Conformity only, and not a full Test Certificate.
Sizes ½ to 3 inch are the most commonly used and thus the most readily available.
External MALE threads are tapered and Internal FEMALE threads are parallel. The threads are cut to BS21: Part 1: 1985 and are called Whitworth Threads.

low-pressure-cross

low-pressure-hexagon-nut

low-pressure-reducing-bush

low-pressure-square-head-plug

low-pressure-hose-connector

low-pressure-hexagon-head-plug

low-pressure-welding-nipple

low-pressure-barrel-nipple

low-pressure-cap

low-pressure-equal-nipple

low-pressure-reducing-nipple

low-pressure-hexagon-nipple

low-pressure-reducing-socket

low-pressure-round-nut

low-pressure-socket

low-pressure-half-socket

low-pressure-45-elbow

low-pressure-union

low-pressure-equal-tee

low-pressure-90-elbow

90o Elbow: Enables the pipe run to be turned through a right angle. Female thread both ends.
45o Elbow: Enables the pipe run to be turned through 45 degrees. Female thread both ends.
Equal Tee: This allows the connection of a branch at right angles from the main pipe run. Female thread at all three connections.
Socket: Used to connect two pipes or fittings that have male threads. Female thread both ends.
Half Socket: Used to connect two pipes or fittings that have male threads. Used when there is a confined space. Female thread both ends.
Reducing Socket: Used to connect two different sizes of pipe or fittings that have male threads. Female threads both ends.
Cap: Used to terminate a male threaded pipe run. Female threaded.
Union: Connects male threaded pipe or components. Used when easy or regular access is required e.g. for cleaning. Female thread both ends.
Hexagon Nut: Used to fix male threaded fittings. Female threaded.
Reducing Bush: Connects a larger female threaded component to a smaller male threaded component. Male thread at the large end and Female thread at the small end.
Hexagon Nipple: Used to connect two female threaded components. Male thread both ends.
Hexagon Reducing Nipple: Connects two female threaded components of different sizes. Male thread both ends.
Barrel Nipple: Used to connect two female threaded components of the same size. Male (taper) thread both ends.
Parallel or Equal Nipple: The only BSP fitting to have a male parallel thread. Used to connect female threaded components together.
Spigot or Welding Nipple: Weld prepared at one end and a male thread at the other. Used to weld onto equipment that is to be connected to a female threaded component.
Close Taper Nipple: Used to connect two female threaded components. No land between the threads so shorter than a barrel nipple and thus used where space is restricted. Male thread both ends.
Hexagon Head Plug: Used to blank off female threaded outlet. Cannot be used to blank off a pipe directly as pipes only have male threads. Male threaded.
Square Head Plug: Used to blank off female threaded outlet. Cannot be used to blank off a pipe directly as pipes only have male threads. Male threaded.
90o Bend: This has a larger radius than a 90-degree elbow and is again used to turn the pipe run through a right angle. Female thread both ends.
Hose Nipple: Used to connect a hose to the system. Male thread one end and hose serrations at the other.

Whitworth Threads/British Standard Pipe Thread

Nominal Size of Outlet(in)	Nominal Size of Outlet(mm)	Min O/D(mm)	Min O/D of BodyBehind External Thread (mm)	Min I/D of BodyBehind Internal Thread mm	No of Threadsper Inch
1/8	6	15.0	9.8	8.6	28
1/4	8	18.5	13.3	11.4	19
3/8	10	22.0	16.8	15.0	19
1/2	15	27.0	21.1	18.6	14
3/4	20	32.5	26.6	24.1	14
1	25	39.5	33.4	30.3	11
1 1/4	32	49.0	42.1	39.0	11
1 1/2	40	56.0	48.0	44.8	11
2	50	68.0	59.8	56.7	11
2 1/2	65	84.0	75.4	72.2	11
3	80	98.0	88.1	84.9	11
4	100	124.0	113.3	110.1	11
5	125	151.0	138.7	135.5	11
6	150	178.0	164.1	160.9	11