Cast Iron Threaded Pipe Fittings - Working Pressures

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Maximum working pressure of cast iron pipe fittings - threaded fittings according ANSI B16.4

The maximum working pressure of cast iron pipe fittings - threaded fittings according ANSI B16.4 can be found from the table below.

Maximum Working Pressure (psig)
Temperature (^oF)	Pressure Class
Temperature (^oF)	125	250
-20 up to 150	175	400
200	165	370
250	150	340
300	140	310
350	125	280
400	-	250

Convert to other temperature units

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