Cv-values: J915

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Series	Code	Description
J915	J915	NELES EASYFLOW FULL BORE FLANGED BALL VALVE SERIES J9, CLASS 150

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IMO

Technical bulletin

J9 series full bore flanged floating ball valves have polymeric seats and provide long, reliable performance. They are easy to automate with direct mount actuator capability. Suitable for light control and tight shut-off duties. Flanged ASME Class 150 sizes DN 15 through 200, and Class 300 sizes DN 15 through 150.

C_v-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
15	0.5	0	0.1	0.2	0.4	0.7	1.1	1.5	2.7	4.7	8.5	19
20	0.75	0	0.2	0.6	1.1	1.8	2.8	4.1	7.1	12.4	22.5	50
25	1	0	0.5	1.2	2.3	3.8	5.8	8.4	14.7	25.5	46.3	103
32	1.25	0	0.7	1.9	3.5	5.9	9	13	22.8	39.6	71.9	160
40	1.5	0	1.1	3	5.6	9.3	14.3	20.6	36	62.7	113.7	253
50	2	0	1.9	5.2	9.7	16.2	24.9	35.9	62.7	109.2	198.2	441
65	2.5	0	3.3	8.7	16.4	27.3	41.8	60.3	105.4	183.6	333.1	741
80	3	0	5.7	15.2	28.5	47.5	72.7	105	183.5	319.6	579.9	1290
100	4	0	10.2	27.2	51	85.1	130.2	188	328.7	572.3	1038	2310
150	6	0	23.6	63	118.2	197	301.5	435.3	761.2	1325	2405	5350
200	8	0	44.5	118.6	222.5	370.8	567.8	819.3	1433	2495	4527	10070

C_v/d²-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
15	0.5	0	0.468	0.668	0.782	0.854	0.916	0.954	0.976	0.991	0.998	1
20	0.75	0	0.468	0.668	0.782	0.854	0.916	0.954	0.976	0.991	0.998	1
25	1	0	0.468	0.668	0.782	0.854	0.916	0.954	0.976	0.991	0.998	1
32	1.25	0	0.468	0.668	0.782	0.854	0.916	0.954	0.976	0.991	0.998	1
40	1.5	0	0.468	0.668	0.782	0.854	0.916	0.954	0.976	0.991	0.998	1
50	2	0	0.468	0.668	0.782	0.854	0.916	0.954	0.976	0.991	0.998	1
65	2.5	0	0.468	0.668	0.782	0.854	0.916	0.954	0.976	0.991	0.998	1
80	3	0	0.475	0.672	0.784	0.855	0.918	0.954	0.977	0.991	0.998	1
100	4	0	0.426	0.656	0.774	0.853	0.907	0.944	0.968	0.982	0.998	1
150	6	0	0.503	0.686	0.794	0.869	0.921	0.956	0.979	0.992	0.998	1
200	8	0	0.54	0.7	0.802	0.874	0.925	0.958	0.98	0.992	0.998	1

F_L-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
15	0.5	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.57	0.28
20	0.75	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.57	0.28
25	1	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.57	0.28
32	1.25	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.57	0.28
40	1.5	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.57	0.28
50	2	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.57	0.28
65	2.5	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.57	0.28
80	3	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.57	0.28
100	4	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.57	0.28
150	6	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.57	0.28
200	8	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.57	0.28

X_T-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
15	0.5	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.19	0.05
20	0.75	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.19	0.05
25	1	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.19	0.05
32	1.25	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.19	0.05
40	1.5	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.19	0.05
50	2	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.19	0.05
65	2.5	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.19	0.05
80	3	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.19	0.05
100	4	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.19	0.05
150	6	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.19	0.05
200	8	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.19	0.05

z-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
15	0.5	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.09	0.06
20	0.75	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.09	0.06
25	1	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.09	0.06
32	1.25	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.09	0.06
40	1.5	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.09	0.06
50	2	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.09	0.06
65	2.5	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.09	0.06
80	3	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.09	0.06
100	4	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.09	0.06
150	6	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.09	0.06
200	8	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.09	0.06

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File creation day: 13.1.2025 (day.month.year)

Cv-values

Cv/d2-values

FL-values

XT-values

z-values

C_v-values

C_v/d²-values

F_L-values

X_T-values