Malleable Iron Pipe Fittings Pressure Rating

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 pipe fittings pressure rating.

Again it s a little more complicated you have to look at the fluid and the temperature because the pressure is related to temperature. Some malleable fittings such as floor flange lateral street tee and bullhead tees are not commonly available in forged iron. Pressure ratings pressure ratings of pipes and tubes and their fittings carbon steel stainless steel plastic copper and more. 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.

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. Bs 143 1256 1986 states that fittings are for general purposes for the transmission of fluids within the pressure and temperature ranges specified. Threading identification marking class 300 malleable iron threaded fittings are marked with the numerals 300 the letters mi and the size. Bsi pipe tube and fittings standards and specifications british.

Asme b 16 39 malleable iron threaded pipe unions threads. The ratings given are uprated from those in the 1968 edition both for malleable cast iron and bronze fittings. Ansi asme b1 20 1 pipe threads. Malleable iron fittings are lighter fittings in 150 and 300 pressure class.

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. A class 150 rating means these fittings have been tested and approved for a maximum pressure of 300 psi at 150 f. Pressure temperature ratings. As the temperature goes up the pressure goes down.

They are made for light industrial and plumbing use up to 300 psi. Cast iron there are four basic types of cast iron white iron gray. 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 ratings pressure ratings of pipes and tubes and their fittings carbon steel stainless steel plastic copper and more.

The pressure rating roughly of a 150 pound malleable iron fitting is 150 psi 300 pound malleable iron fitting has a pressure rating of 300 psi.