Cv-values: ZXB

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Series	Code	Description
ZX	ZXB	NELES ZX SERIES ROTARY GLOBE WITH BALANCED TRIM

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IMO

Technical bulletin

RotaryGlobe control valve is designed to control a wide range of process liquids, gases and vapors. Its reliable and rugged construction with variety of different trim choices makes the RotaryGlobe an ideal choice for general, difficult and even severe service control valve applications in wide range of industries. Balanced trim for aerodynamic noise and liquid cavitation attenuation. Temperature range -80 ... +425 °C. Flanged, ANSI 150...1500 / PN 10 - 100.

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	0.2	0.4	0.6	0.8	1	1.2	1.4	1.6	1.8	2
20	0.75	0	0.23	0.51	0.78	1.14	1.63	2.3	2.74	3.23	3.81	4.66
20	0.75	1	0.2	0.4	0.6	0.8	1	1.2	1.4	1.6	1.8	2
25	1	0	0.23	0.51	0.78	1.14	1.63	2.3	2.74	3.23	3.81	4.66
25	1	1	0.2	0.4	0.6	0.8	1	1.2	1.4	1.6	1.8	2
40	1.5	0	1.3	2.6	3.9	5.2	6.5	7.8	9.1	10.4	11.7	13
40	1.5	1	0.6	1.2	1.8	2.4	3	3.6	4.2	4.8	5.4	6
50	2	0	1.3	2.6	3.9	5.2	6.5	7.8	9.1	10.4	11.7	13
50	2	1	0.6	1.2	1.8	2.4	3	3.6	4.2	4.8	5.4	6
80	3	0	2.8	5.6	8.4	11.2	14	16.8	19.6	22.4	25.2	28
80	3	1	1.3	2.6	3.9	5.2	6.5	7.8	9.1	10.4	11.7	13
100	4	0	5.2	10.4	15.6	20.8	26	31.2	36.4	41.6	46.8	52
100	4	1	2.8	5.6	8.4	11.2	14	16.8	19.6	22.4	25.2	28

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	0.619	0.757	0.818	0.829	0.841	0.86	0.889	0.903	0.923	0.938
20	0.75	0	0.619	0.757	0.818	0.829	0.841	0.86	0.889	0.903	0.923	0.938
20	0.75	1	0.619	0.757	0.818	0.829	0.841	0.86	0.889	0.903	0.923	0.938
25	1	0	0.619	0.757	0.818	0.829	0.841	0.86	0.889	0.903	0.923	0.938
25	1	1	0.619	0.757	0.818	0.829	0.841	0.86	0.889	0.903	0.923	0.938
40	1.5	0	0.619	0.757	0.818	0.829	0.841	0.86	0.889	0.903	0.923	0.938
40	1.5	1	0.619	0.757	0.818	0.829	0.841	0.86	0.889	0.903	0.923	0.938
50	2	0	0.619	0.757	0.818	0.829	0.841	0.86	0.889	0.903	0.923	0.938
50	2	1	0.619	0.757	0.818	0.829	0.841	0.86	0.889	0.903	0.923	0.938
80	3	0	0.619	0.757	0.818	0.829	0.841	0.86	0.889	0.903	0.923	0.938
80	3	1	0.619	0.757	0.818	0.829	0.841	0.86	0.889	0.903	0.923	0.938
100	4	0	0.619	0.757	0.818	0.829	0.841	0.86	0.889	0.903	0.923	0.938
100	4	1	0.619	0.757	0.818	0.829	0.841	0.86	0.889	0.903	0.923	0.938

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	0.96	0.95	0.95	0.95	0.95	0.95	0.95	0.95	0.95	0.95
20	0.75	0	0.97	0.95	0.95	0.95	0.95	0.95	0.95	0.95	0.95	0.95
20	0.75	1	0.97	0.96	0.95	0.95	0.95	0.95	0.95	0.95	0.95	0.95
25	1	0	0.97	0.97	0.96	0.95	0.95	0.95	0.95	0.95	0.95	0.95
25	1	1	0.97	0.97	0.97	0.96	0.95	0.95	0.95	0.95	0.95	0.95
40	1.5	0	0.97	0.95	0.95	0.95	0.95	0.95	0.95	0.95	0.95	0.95
40	1.5	1	0.97	0.97	0.96	0.95	0.95	0.95	0.95	0.95	0.95	0.95
50	2	0	0.97	0.97	0.95	0.95	0.95	0.95	0.95	0.95	0.95	0.95
50	2	1	0.97	0.97	0.97	0.97	0.96	0.95	0.95	0.95	0.95	0.95
80	3	0	0.97	0.97	0.95	0.95	0.95	0.95	0.95	0.95	0.95	0.95
80	3	1	0.97	0.97	0.97	0.97	0.96	0.96	0.95	0.95	0.95	0.95
100	4	0	0.97	0.97	0.95	0.95	0.95	0.95	0.95	0.95	0.95	0.95
100	4	1	0.97	0.97	0.97	0.96	0.95	0.95	0.95	0.95	0.95	0.95

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	0.75	0.73	0.71	0.74	0.74	0.75	0.75	0.75	0.75	0.75
20	0.75	0	0.75	0.75	0.74	0.72	0.74	0.74	0.75	0.75	0.75	0.75
20	0.75	1	0.75	0.75	0.75	0.74	0.73	0.72	0.72	0.73	0.74	0.74
25	1	0	0.75	0.75	0.75	0.75	0.73	0.71	0.73	0.74	0.74	0.75
25	1	1	0.75	0.75	0.75	0.75	0.75	0.74	0.74	0.73	0.73	0.72
40	1.5	0	0.75	0.74	0.73	0.71	0.74	0.74	0.74	0.75	0.75	0.75
40	1.5	1	0.75	0.75	0.75	0.75	0.74	0.73	0.72	0.72	0.71	0.73
50	2	0	0.75	0.75	0.75	0.74	0.73	0.72	0.71	0.72	0.74	0.74
50	2	1	0.75	0.75	0.75	0.75	0.75	0.75	0.75	0.74	0.74	0.74
80	3	0	0.75	0.75	0.75	0.74	0.73	0.72	0.72	0.72	0.73	0.74
80	3	1	0.75	0.75	0.75	0.75	0.75	0.75	0.75	0.74	0.74	0.74
100	4	0	0.75	0.75	0.75	0.74	0.73	0.72	0.71	0.72	0.74	0.74
100	4	1	0.75	0.75	0.75	0.75	0.75	0.75	0.74	0.74	0.73	0.73

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	0.64	0.6	0.58	0.48	0.46	0.41	0.41	0.41	0.41	0.41
20	0.75	0	0.69	0.62	0.6	0.59	0.49	0.46	0.41	0.41	0.41	0.41
20	0.75	1	0.69	0.66	0.61	0.6	0.6	0.59	0.57	0.5	0.48	0.48
25	1	0	0.69	0.69	0.65	0.61	0.6	0.59	0.52	0.48	0.48	0.41
25	1	1	0.69	0.69	0.68	0.64	0.61	0.61	0.6	0.6	0.6	0.6
40	1.5	0	0.68	0.61	0.6	0.59	0.5	0.48	0.46	0.41	0.41	0.41
40	1.5	1	0.69	0.69	0.64	0.61	0.6	0.6	0.6	0.59	0.58	0.53
50	2	0	0.69	0.67	0.61	0.61	0.6	0.6	0.59	0.55	0.49	0.48
50	2	1	0.69	0.69	0.69	0.68	0.65	0.62	0.61	0.61	0.6	0.6
80	3	0	0.69	0.68	0.62	0.61	0.6	0.6	0.59	0.57	0.51	0.48
80	3	1	0.69	0.69	0.69	0.68	0.66	0.63	0.61	0.61	0.61	0.6
100	4	0	0.69	0.67	0.61	0.61	0.6	0.6	0.59	0.55	0.49	0.48
100	4	1	0.69	0.69	0.69	0.66	0.63	0.61	0.61	0.6	0.6	0.6

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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