Volumetric Flow Rate

Maximum Recommended Volumetric Flow Rate for Water through a Tube

Orifice Size (inches)	Max Flow (gpm)	Approximate P (psi/ft)
0.016	0.030	525
0.020	0.050	390
0.030	0.112	230
0.031	0.119	220
0.040	0.198	160
0.047	0.274	130
0.052	0.335	115
0.060	0.446	95
0.062	0.476	90
0.078	0.754	70
0.083	0.854	65
0.094	1.09	55
0.109	1.47	45
0.125	1.93	40
0.141	2.46	35
0.156	3.01	30
0.172	3.66	25
0.188	4.38	23
0.203	5.10	21
0.219	5.94	20
0.234	6.78	18
0.250	7.74	17
0.266	8.77	15
0.281	9.78	14
0.294	10.7	13
0.312	12.0	13
0.328	13.3	12
0.344	14.6	11
0.359	15.9	11
0.375	17.4	10
0.391	18.9	<10
0.406	20.4	<10
0.422	22.0	<10
0.438	23.7	<10
0.453	25.4	<10

Orifice Size (inches)	Max Flow (gpm)	Approximate P (psi/ft)
0.469	27.2	<10
0.484	29.0	<10
0.500	30.9	<7
0.516	33.0	<7
0.531	34.9	<7
0.547	37.0	<7
0.562	39.1	<7
0.578	41.4	<7
0.594	43.7	<7
0.609	45.9	<7
0.625	48.4	<7
0.641	50.9	<7
0.656	53.3	<7
0.672	55.9	<5
0.688	58.6	<5
0.703	61.2	<5
0.719	64.0	<5
0.734	66.7	<5
0.750	69.7	<5
0.766	72.7	<5
0.781	75.6	<5
0.797	78.7	<5
0.812	81.7	<5
0.828	84.9	<5
0.844	88.3	<5
0.859	91.4	<5
0.875	94.9	<5
0.891	98.4	<5
0.906	101	<5
0.922	105	<5
0.938	109	<5
0.953	112	<5
0.969	116	<5
0.984	120	<5
1.000	123	<5

Pressure Rating Reduction

316 and 304 SS components at elevated levels.

Temperature °F (°C)	Percent of Room Temperature Rating
Up to 100 (38)	100
200 (93)	100
300 (149)	100
400 (204)	96.5
500 (260)	90
600 (316)	85
650 (343)	83
700 (371)	81.5
750 (399)	80.5
800 (427)	79.5
850 (453)	78.5

Intermediate values may be linearly interpolated.

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