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FLOW RATE OF STEAM IN SCHEDULE 40 PIPE
PRESSURE DROP PER 100 FT OF LENGTH
	1/16 (PSI 1 oz/in²)		1/8 PSI (2 oz/in²)		1/4 PSI (4 oz/in²)		1/2 PSI (8 oz/in²)		3/4 PSI (12 oz/in²)		1 PSI		2 PSI
NOMINAL PIPE SIZE, IN.	SAT. PRESS. 3.5	PSIG 12	SAT. PRESS. 3.5	PSIG 12	SAT. PRESS. 3.5	PSIG 12	SAT. PRESS. 3.5	PSIG 12	SAT. PRESS. 3.5	PSIG 12	SAT. PRESS. 3.5	PSIG 12	SAT. PRESS. 3.5	PSIG 12
3/4	9	11	14	16	20	24	29	35	36	43	42	50	60	73
1	17	21	26	31	37	46	54	66	68	82	81	93	114	137
1 1/4	36	45	53	66	78	96	111	138	140	170	162	200	232	280
1 /12	56	70	84	100	120	147	174	210	218	260	246	304	360	430
2	108	134	162	194	234	285	336	410	420	510	480	590	710	850
2 1/2	174	215	258	310	378	460	540	660	680	820	780	950	1150	1370
3	318	380	465	550	660	810	960	1160	1190	1430	1380	1670	1950	2400
3 1/2	462	550	670	800	990	1218	1410	1700	1740	2100	2000	2420	2950	3450
4	640	800	950	1160	1410	1690	1980	2400	2450	3000	2880	3460	4200	4900
5	1200	1430	1680	2100	2440	3000	3570	4250	4380	5250	5100	6100	7500	8600
6	1920	2300	2820	3350	3960	4850	5700	6800	7000	8600	8400	10000	11900	14200
8	3900	4800	5570	7000	8100	10000	11400	14300	14500	17700	16500	20500	24000	29500
10	7200	8800	102000	12600	15000	18200	21000	26000	26200	32000	30000	37000	42700	52000
12	11400	13700	16500	19500	23400	28400	33000	40000	41000	49500	48000	57500	67800	81000
Notes 1. Flow rate is in lb/h at initial saturation pressure of 3.5 and 12 psig. Flow is based on Moody friction factor, where the flow of condensate does not inhibit the flow of steam. 2. the flow rates at 3.5 psig cover saturated pressure from 1 to 6 psig, and the rates at 12 psig cover saturated pressure from 8 to 16 psig with an error not exceeding 8 % 3. The steam velocities corresponding to the flow rates given in this table can be found from figure 10 and 11.