Bsi pipe tube and fittings standards and specifications british.
Malleable iron pipe fittings pressure rating.
The ratings given are uprated from those in the 1968 edition both for malleable cast iron and bronze fittings.
They are made for light industrial and plumbing use up to 300 psi.
Again it s a little more complicated you have to look at the fluid and the temperature because the pressure is related to temperature.
150 black galvanized malleable iron pipe fittings meets or exceeds all applicable astm and ansi standards stocked from 1 8 through 6 diameters 100 pressure tested before leaving the factory.
Pressure ratings pressure ratings of pipes and tubes and their fittings carbon steel stainless steel plastic copper and more.
Pressure ratings pressure ratings of pipes and tubes and their fittings carbon steel stainless steel plastic copper and more.
Class 150 malleable iron threaded fittings have no pressure class markings.
Asme ansi b16 standards for pipes and fittings the asme b16 standards covers pipes and fittings in cast iron cast bronze wrought copper and steel.
Pressure temperature ratings.
Asme ansi b16 standards for pipes and fittings the asme b16 standards covers pipes and fittings in cast iron cast bronze wrought copper and steel.
Malleable iron threaded fittings pressure temperature ratings class 150 class 300 nps normal pipe size 1 4 1 11 4 2 2 1 2 3 temp c temp f bar psi bar psi bar psi bar psi.
Threading identification marking class 300 malleable iron threaded fittings are marked with the numerals 300 the letters mi and the size.
Bs 143 1256 1986 states that fittings are for general purposes for the transmission of fluids within the pressure and temperature ranges specified.
Some malleable fittings such as floor flange lateral street tee and bullhead tees are not commonly available in forged iron.
Malleable iron fittings are lighter fittings in 150 and 300 pressure class.
A class 150 rating means these fittings have been tested and approved for a maximum pressure of 300 psi at 150 f.
Cast iron there are four basic types of cast iron white iron gray.
The graph below shows the bs pressure temperature.
As the temperature goes up the pressure goes down.
Ansi asme b1 20 1 pipe threads.
Asme b16 3 2006 is the standard used to test malleable iron threaded fittings to make sure they meet the proper pressure and temperature ratings.
