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GB cast steel ball valve

The ball valve is mainly used to cut off or connect the medium in the pipeline, and can also be used for the regulation and control of the fluid. The hard-sealed V-shaped ball valve has a strong connection between the V-shaped ball core and the metal valv

Product Parameter

standard

Design and manufacture according to GB/T12237

Structure length according to GB/T12221

Flange connection size according to JB/T79

Inspection according to JB/T9092

Unit

Pilot projects		Shell test	Seal test	Upper seal test	Air tightness test
Medium		Water			Gas
MPa	MPa	MPa	MPa
Nominal pressure PN (MPa)	1.6	2.4	1.8	1.8	0.5-0.7
	2.5	3.8	2.8	2.8
	4.0	6.0	4.4	4.4
	6.4	9.6	7.0	7.0
	10.0	15.0	11.0	11.0
	16.0	24.0	18.0	18.0

主要零件材料

NameBody/bonnetPacking / GasketBoltNutHandle

Material
CF8	CF3	CF8M	CF3M	WCB	LCB	WC6	WC9	C5
Sphere	CF8	CF3	CF8M	CF3M	WCB HCr	CF8	CF8	CF8	CF8
Stem	F304	F304L	F316	F316L	2C13	F304	F304	F304	F304
Valve seat	PTFE/PPL
PTFE/PPL					graphite
Stainless steel					35CrMoA
Stainless steel					45、35CrMoA
cast steel

Main external dimensions and connection dimensions:

National standard (GB) PN1.6MPa
DN	L	D	D1	D2	b	Z-фd	H
15	130	95	65	45	14	4-ф14	90
20	140	105	75	55	14	4-ф14	95
25	150	115	85	65	14	4-ф14	100
32	165	135	100	78	16	4-ф18	108
40	180	145	110	85	16	4-ф18	120
50	200	160	125	100	16	4-ф18	135
65	220	180	145	120	18	4-ф18	155
80	250	195	160	135	20	8-ф18	175
100	280	215	180	155	20	8-ф18	200
125	320	245	210	185	22	8-ф18	220
150	360	280	240	210	24	8-ф23	240
200	400	335	295	265	26	12-ф23	310
250	533	405	355	320	30	12-ф25	360
300	610	460	410	375	30	12-ф25	420
National standard (GB) PN2.5MPa
DN	L	D	D1	D2	b	Z-фd	H
15	130	95	65	45	16	4-ф14	90
20	140	105	75	55	16	4-ф14	95
25	150	115	85	65	16	4-ф14	100
32	165	135	100	78	18	4-ф18	110
40	180	145	110	85	18	4-ф18	120
50	200	160	125	100	20	4-ф18	135
65	220	180	145	120	22	8-ф18	160
80	250	195	160	135	22	8-ф18	175
100	280	230	190	160	24	8-ф23	200
125	320	270	220	188	28	8-ф25	220
150	360	300	250	218	30	8-ф25	240
200	400	360	310	278	34	12-ф25	320
250	533	425	370	332	36	12-ф30	380
National standard (GB) PN4.0MPa
DN	L	D	D1	D2	b	Z-фd	H
15	130	95	65	45	16	4-ф14	90
20	140	105	75	55	16	4-ф14	95
25	150	115	85	65	16	4-ф14	100
32	180	135	100	78	18	4-ф18	110
40	210	145	110	85	18	4-ф18	120
50	220	160	125	100	20	4-ф18	135
65	250	180	145	120	22	8-ф18	160
80	280	195	160	135	22	8-ф18	175
100	320	230	190	160	24	8-ф23	200
125	400	270	220	188	28	8-ф25	220
150	400	300	250	218	30	8-ф25	240
200	502	375	320	282	38	12-ф30	320
250	568	445	385	345	42	12-ф34	470
National standard (GB) PN6.4MPa
DN	L	D	D1	D2	b	Z-фd	H
15	160	105	75	55	18	4-ф14	95
20	165	125	90	68	20	4-ф18	105
25	180	135	100	78	22	4-ф18	110
32	200	150	110	82	24	4-ф18	120
40	220	165	125	95	24	4-ф23	130
50	250	175	135	105	26	4-ф23	145
65	280	200	160	130	28	8-ф23	170
80	320	210	170	140	30	8-ф23	190
100	460	250	200	168	32	8-ф25	230
125	460	295	240	202	36	8-ф30	260
150	495	340	280	240	38	8-ф34	310