Cv-values: J730

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Series	Code	Description
J730	J730	NELES EASYFLOW REDUCED BORE FLANGED BALL VALVE SERIES J7, CLASS 300

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IMO

Technical bulletin

J7 series reduced 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	0.11	0.22	0.495	0.803	1.43	2.31	3.3	5.17	7.7	11
20	0.75	0	0.2	0.4	0.9	1.46	2.6	4.2	6	9.4	14	20
25	1	0	0.33	0.66	1.485	2.409	4.29	6.93	9.9	15.51	23.1	33
32	1.25	0	0.78	1.56	3.51	5.694	10.14	16.38	23.4	36.66	54.6	78
40	1.5	0	0.88	1.76	3.96	6.424	11.44	18.48	26.4	41.36	61.6	88
50	2	0	1.31	2.62	5.895	9.563	17.03	27.51	39.3	61.57	91.7	131
65	2.5	0	2.65	5.3	11.925	19.345	34.45	55.65	79.5	124.5	185.5	265
80	3	0	3.32	6.64	14.94	24.236	43.16	69.72	99.6	156	232.4	332
100	4	0	5.97	11.94	26.865	43.581	77.61	125.4	179.1	280.6	417.9	597
150	6	0	12.9	25.8	58.05	94.17	167.7	270.9	387	606.3	903	1290

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	0.468	0.668	0.782	0.854	0.916	0.954	0.976	0.991	0.998	1
100	4	0	0.475	0.672	0.784	0.855	0.918	0.954	0.977	0.991	0.998	1
150	6	0	0.426	0.656	0.774	0.853	0.907	0.944	0.968	0.982	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	0.59	0.51
20	0.75	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.59	0.51
25	1	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.59	0.51
32	1.25	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.59	0.51
40	1.5	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.59	0.51
50	2	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.59	0.51
65	2.5	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.59	0.51
80	3	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.59	0.51
100	4	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.59	0.51
150	6	0	0.91	0.91	0.9	0.88	0.85	0.8	0.74	0.67	0.59	0.51

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	0.2	0.15
20	0.75	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.2	0.15
25	1	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.2	0.15
32	1.25	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.2	0.15
40	1.5	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.2	0.15
50	2	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.2	0.15
65	2.5	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.2	0.15
80	3	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.2	0.15
100	4	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.2	0.15
150	6	0	0.82	0.82	0.8	0.75	0.67	0.57	0.42	0.3	0.2	0.15

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	0.1	0.06
20	0.75	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.1	0.06
25	1	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.1	0.06
32	1.25	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.1	0.06
40	1.5	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.1	0.06
50	2	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.1	0.06
65	2.5	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.1	0.06
80	3	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.1	0.06
100	4	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.1	0.06
150	6	0	0.52	0.51	0.47	0.42	0.36	0.29	0.22	0.16	0.1	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