Cv-values: 835SHDWN

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Series	Code	Description
835	835SHDWN	JAMESBURY 835/83P SERIES SOFT SEATED HIGH PERFORMANCE BUTTERFLY VALVE

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Technical bulletin

Series 835 Wafer-Sphere™ high performance butterfly valves provide excellent control performance and bi-directional bubble tight shut-off to 100 psi (7 bar). The flexible seat design provides low pressure sealing and long seat life. The double offset disc ensures extended cycle life and low maintenance costs. An optional low torque seat allows smaller actuators to be selected. Fire-Tite™ valve construction is also available. Wafer and single flange lugged bodies mount between ANSI 150 and DIN PN 10, 16 and 25 flanges.

C_v-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
750	30	0	1309	2835	4755	7241	10425	14657	20327	27961	36816	44000
900	36	0	2352	5096	8546	13015	18739	26344	36537	50258	66174	78000
1050	42	0	3069	6651	11152	16984	24454	34378	47679	65585	86355	102000
1200	48	0	4114	8913	14946	22762	32772	46072	63898	87894	115729	137000
1350	54	0	5432	11768	19734	30054	43271	60833	84369	116053	152806	181000
1500	60	0	6570	14235	23871	36354	52341	73584	102054	140379	184836	219000

C_v/d²-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
750	30	0	0.118	0.137	0.167	0.202	0.241	0.282	0.322	0.355	0.377	0.396
900	36	0	0.118	0.137	0.167	0.202	0.241	0.282	0.322	0.355	0.377	0.396
1050	42	0	0.118	0.137	0.167	0.202	0.241	0.282	0.322	0.355	0.377	0.396
1200	48	0	0.118	0.137	0.167	0.202	0.241	0.282	0.322	0.355	0.377	0.396
1350	54	0	0.118	0.137	0.167	0.202	0.241	0.282	0.322	0.355	0.377	0.396
1500	60	0	0.118	0.137	0.167	0.202	0.241	0.282	0.322	0.355	0.377	0.396

F_L-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
750	30	0	0.86	0.85	0.83	0.8	0.77	0.72	0.67	0.58	0.48	0.41
900	36	0	0.86	0.84	0.81	0.78	0.74	0.69	0.61	0.51	0.39	0.31
1050	42	0	0.86	0.84	0.82	0.79	0.74	0.69	0.62	0.52	0.41	0.33
1200	48	0	0.86	0.84	0.81	0.78	0.74	0.69	0.62	0.51	0.4	0.31
1350	54	0	0.86	0.84	0.81	0.78	0.73	0.68	0.6	0.5	0.38	0.29
1500	60	0	0.86	0.84	0.81	0.78	0.74	0.69	0.61	0.5	0.39	0.3

X_T-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
750	30	0	0.53	0.53	0.53	0.52	0.48	0.42	0.36	0.28	0.2	0.14
900	36	0	0.53	0.53	0.53	0.5	0.44	0.38	0.31	0.21	0.12	0.09
1050	42	0	0.53	0.53	0.53	0.51	0.45	0.39	0.32	0.23	0.14	0.1
1200	48	0	0.53	0.53	0.53	0.5	0.44	0.38	0.31	0.22	0.13	0.09
1350	54	0	0.53	0.53	0.53	0.5	0.43	0.37	0.3	0.21	0.12	0.08
1500	60	0	0.53	0.53	0.53	0.5	0.44	0.38	0.31	0.21	0.12	0.09

z-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
750	30	0	0.37	0.35	0.32	0.28	0.26	0.23	0.2	0.18	0.15	0.14
900	36	0	0.37	0.34	0.29	0.26	0.24	0.21	0.18	0.15	0.13	0.12
1050	42	0	0.37	0.34	0.3	0.27	0.25	0.22	0.19	0.16	0.14	0.13
1200	48	0	0.37	0.34	0.3	0.26	0.24	0.22	0.19	0.16	0.13	0.12
1350	54	0	0.37	0.34	0.29	0.26	0.24	0.21	0.18	0.15	0.13	0.12
1500	60	0	0.37	0.34	0.29	0.26	0.24	0.21	0.18	0.15	0.13	0.12

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File creation day: 22.4.2024 (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