Cast Iron Flanged Pipe Fittings - Working Pressures

Maximum working pressure of cast iron pipe fittings - flanged fittings according ANSI B16.1

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The maximum working pressure of cast iron pipe fittings - flanged fittings according ANSI B16.1 can be found in the diagram and table below:

Maximum Working Pressure (psig)
Temperature (^oF)	Pressure Class
	125			250
	Pipe Size (inches)
	1 - 12	14 - 24	30 - 48	1 - 12	14 - 24 ¹⁾
-20 up to 150	200	150	150	500	300
200	190	135	115	460	280
225	180	130	100	440	270
250	175	125	85	415	260
275	170	120	65	395	250
300	165	110	50	375	240
325	155	105	-	355	230
350	150	100	-	335	220
375	145	-	-	315	210
400	140	-	-	290	200
425	130	-	-	270	-
450	125	-	-	250	-

¹⁾ For liquid services - flanges only. Materials of construction ASTM A 126 Class B

Convert to other temperature units

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Related Topics

Pressure Ratings of Pipes and Tubes Pressure ratings of pipes and tubes and their fittings - carbon steel , stainless steel, plastic, copper and more

Related Documents

ASME/ANSI B16 - Standards of Pipes and Fittings The ASME B16 Standards covers pipes and fittings in cast iron , cast bronze, wrought copper and steel
Cast Iron Flanges - ASME/ANSI Class 125 ASME/ANSI B16.1 - 1998 - Cast Iron Pipe Flanges and Flanged Fittings - Class 125 Flanges - outside and inside diameters, bolt circles, numbers and diameters of bolts
Cast Iron Flanges - ASME/ANSI Class 25 ASME/ANSI B16.1 - 1998 - Cast Iron Pipe Flanges and Flanged Fittings - Class 25 Flanges - outside and inside diameters, bolt circles, numbers and diameters of bolts
Stud Reference Charts for Cast Iron Flanges The number, diameter and length of studs for cast iron flanges class 125 and 250
Cast Iron Threaded Pipe Fittings - Working Pressures Maximum working pressure of cast iron pipe fittings - threaded fittings according ANSI B16.4
Cast Iron Flanged Pipe Fittings - Working Pressures Maximum working pressure of cast iron pipe fittings - flanged fittings according ANSI B16.1
Cast Iron There are four basic types of cast iron - white iron, gray iron, ductile iron and malleable iron

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