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GB Gate Valve


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Standards

Design and manufacture as GB/T12234

Face to face dimensions as GB/T12221

End flange dimension as JB/T79

Pressure test as JB/T9092

Test Pressure

Test Item		Shell Test	Seal Test	Back Seal Test	Air Seal Test
Test Item		Shell Test	Seal Test	Back Seal Test	Air Seal Test
Medium		Water			Air
Unit		MPa	MPa	MPa	MPa
NominalPressurePN(MPa)	1	1.5	1.1	1.1	0.5~0.7
	1.6	2.4	1.8	1.8
	2.5	3.8	2.8	2.8
	4	6	4.4	4.4
	6.4	9.6	7	7
	10	15	11	11
	16	24	18	18

Materials for Main Parts

Name					Material
Body/Bonnet	CF8	CF3	CF8M	CF3M	WCB	LCB	WC6	WC9	C5
Wedge	CF8	CF3	CF8M	CF3M	WCB	LCB	WC6	WC9	C5
Stem	F304	F304L	F316	F316L	2CR13	F304	F304	F304	F304
Stem Nut	Aluminium Bronze
Packing	PTFF				Graphite
Gasket	PTFF				Graphite
Gland	CF8	CF3	CF8M	CF3M	WCB	LCB	WC6	WC9	C5
Bolt	Stainless Steel				35CrMoA
Nut	Stainless Steel				45、35CrMoA
Handwheel	Cast Steel

Chemical Composition and Mechanical Property of CommonSteely Wrought SteelParts(Steel Parts)

Standard number	Trademark	Chemical composition										Mechanical property
		C≥	Si≥	Mn≥	P≥	₂	Cr	Ni	Mo	V	Cu	Ob Mpa	OsMpa	δ%	Ψ%	AK/J

GB12223	WCB	0.3	0.6	1	0.04	0.045						485	350	22	35
GB12229	WCC	0.25	0.6	1.2	0.04	0.045						485	275	22	35
ZBJC8015	ZG1Cr5Mo	0.15	0.5	0.6	0.035	0.03	4.0~ 6.0		0.50~ 0.65			590	390	18	-
ZBJC8015	ZG20CrMoV	0.18~ 0.24	0.17~ 0.37	0.4~ 0.70	0.03	0.03	0.9~ 12		0.50~ 0.70		2.00 ~3.0	500	320	14	30	30
ZBJC8015	ZG15Cr1Mo1V	0.14~ 0.20	0.17~ 0.30	0.4- 0.70	0.03	0.03	120~ 17		1.00~ 1.2		3.00 ~4.0	500	350	14	30	30
GB/T5263	WC1	0.25	0.6	0.5~ 0.80	0.4	0.045			0.45~ 0.65			450	240	24	35
GB/T5263	WC5	0.2	0.6	0.4- 0.70	0.04	0.045	0(.)59(0)	0.06 ~1.0	0.90~ 1.2			483	276	20	35
GB/T5263	WC6	0.2	0.6	0.5- 0.80	0.04	0.045	1.0~ 1.50		0.45~ 0.65			483	276	20	35
GB/T5263	WC9	0.18	0.6	0.4- 0.70	0.04	0.045	2.0~ 2.75		0.90~ 1.20			483	276	20	35
GB12230	ZG00Cr18Ni10	0.03	15	0.8- 0.20	0.04	0.03	17.0 ~20	8.0~ 11.0				392	177	25	(32)	(98)
(GB2100)
GB12230	ZG0Cr18Ni9	0.08	1.5	0.8~ 0.20	0.04	0.03	17.0 ~20	8.0~ 11.0				441	196	25	(32)	(98)
(GB2100)
GB12230	ZG1Cr18Ni9	0.12	15	0.8~ 0.20	0.045	0.03	17.0 ~20	8.0~ 11.0				441	196	25	(32)	(98)
(GB2100
GB12230	ZG0Cr18Ni9Ti	0.8	1.5	0.8~ 0.20	0.04	0.03	17.0 ~20	8.0~ 11.0		0.50~ 0.70		441	196	25	(32)	(98)
(GB2100)
GB12230	ZG0Cr18Ni9Ti	0.102	15	0.8- 0.20	0.045	0.03	17.0 ~20	8.0~ 11.0		0.50~ 0.70		441	196	25	(32)	(98)
(GB2100)
GB12230	ZG0Cr18Ni12Ni2Ti	0.8	15	0.8~ 0.20	0.04	0.03	16.0 ~19	110 ~13	2.00 ~3.0	0.50~ 0.70		490	216	30	(32)	(98)
(GB2100)
GB12230	ZG1Cr18Ni12Ni2Ti	0.12	15	1.5	0.045	0.03	16.0 ~19	110 ~13	3.00 ~4.0	0.50~ 0.70		490	216	30	(32)	(98)
(GB2100)
GB12230	CF3	0.03	2	1.5	0.04	0.04	17.0 ~21	8.0~ 11.0				485	206	35	-
GB12230	CF8	0.08	2	1.5	0.04	0.04	18.0 ~21	8.0~ 11.0				485	206	35	-
GB12230	CF3M	0.03	15	1.5	0.04	0.04	17.0 ~21	9.0~ 12.0	2.00 ~3.0			485	206	30	-
GB12230	CF8M	0.08	1.5	1.5	0.04	0.04	18.0 ~21	9.0~ 12.0	3.00 ~4.0			485	206	30	-
GB12230	CF8C	0.08	2	1.5	0.04	0.04	18.0 -21	9.0~ 12.0			(Nb)8xC%-10	485	206	30		AKVJimmv℃


JB/T7248	LCB	30	0.6	1	0.04	0.045						450~ 620	240	24	35	14/-46

JB/T7248	LC1	0.25	0.6	0.5~ 0.80	0.04	0.045			0.45~ 0.65			450~ 620	240	24	35	14/-59

JB/T7248	LC2	0.25	0.6	0.5~ 0.80	0.04	0.045		2.00 ~3.0				435~ 655	275	24	35	16/-73

JB/T7248	LC3	0.15	0.6	0.5~ 0.80	0.04	0.045		3.00 ~4.0				435~ 655	275	24	35	16/-101

Main Connection Dimensions

Type	DN(mm	Dimensions
Type	DN(mm	L	D	D1	D2	b-f	z- Φd	H	Do
H Z41W-10 Y H Z641W-10 Y H Z941W-10 Y	15	130	95	65	45	12-2	4- Φ14	185	120
	20	150	105	75	55	14-2	4- Φ14	200	120
	25	160	115	85	65	14-2	4- Φ14	225	140
	32	180	135	100	78	16-2	4- Φ18	275	160
	40	165	145	110	85	16-3	4- Φ18	290	160
	50	180	160	125	100	16-3	4- Φ18	345	200
	65	195	180	145	120	18-3	4- Φ18	360	220
	80	210	195	160	135	18-3	4- Φ18	380	240
	100	230	215	180	155	20-3	8- Φ18	430	280
	125	255	245	210	185	22-3	8- Φ18	520	300
	150	280	280	240	210	22-3	8- Φ23	600	320
	200	330	335	295	265	22-3	8- Φ23	765	400
	250	380	390	350	320	24-3	12- Φ23	930	450
	300	420	440	400	368	26-3	12- Φ23	1080	500
	350	450	500	460	428	26-3	16- Φ23	1200	500
	400	480	565	515	482	26-3	16- Φ35	1400	550
	450	510	615	565	532	26-3	20- Φ25	1500	600
	500	540	670	620	585	28-4	20- Φ25	1630	650
H Z41W-16 Y H Z641W-16 Y H Z941W-16 Y	15	130	95	65	45	14-2	4- Φ14	185	120
	20	150	105	75	55	14-2	4- Φ14	200	120
	25	160	115	85	65	14-2	4- Φ14	225	140
	32	180	135	100	78	16-2	4- Φ18	275	160
	40	200	145	110	85	16-3	4- Φ18	295	200
	50	250	160	125	100	16-3	4- Φ18	350	220
	65	265	180	145	120	18-3	4- Φ18	370	240
	80	280	195	160	135	20-3	8- Φ18	390	280
	100	300	215	180	155	20-3	8- Φ18	435	300
	125	325	245	210	185	22-3	8- Φ18	520	320
	150	350	280	240	210	24-3	8- Φ23	610	350
	200	400	335	295	265	26-3	12- Φ23	785	400
	250	450	405	355	320	30-3	12- Φ25	930	450
	300	500	460	410	375	30-4	12- Φ25	1080	500
	350	550	520	470	435	34-4	16- Φ25	1200	550
	400	600	580	525	485	36-4	16- Φ30	1400	600
	450	650	640	585	545	40-4	20- Φ30	1500	650
	500	700	705	650	608	44-4	20- Φ34	1630	700
H Z41W-25 Y H Z641W-25 Y H Z941W-25 Y	15	130	95	65	45	16-2	4- Φ14	185	120
	20	150	105	75	55	16-2	4- Φ14	200	120
	25	160	115	85	65	16-2	4- Φ14	225	140
	32	180	135	100	78	18-2	4- Φ18	275	160
	40	200	145	110	85	18-3	4- Φ18	295	200
	50	250	160	125	100	20-3	4- Φ18	350	220
	65	265	180	145	120	22-3	8- Φ18	370	240
	80	280	195	160	135	22-3	8- Φ18	390	280
	100	300	230	190	160	24-3	8- Φ23	435	300
	125	325	270	220	188	28-3	8- Φ25	520	320
	150	350	300	250	218	30-3	8- Φ25	610	350
	200	400	360	310	278	34-3	12- Φ25	785	400
	250	450	425	370	332	36-3	12- Φ30	930	450
	300	500	485	430	390	40-4	16- Φ30	1080	500
	350	550	550	490	448	44-4	16- Φ34	1250	550
	400	600	610	550	505	48-4	16- Φ34	1430	600
	450	650	660	600	555	50-4	20- Φ34	1520	650
	500	700	730	660	610	52-4	20- Φ41	1650	700

Main Connection Dimensions

H Z41W-40 Y H Z641W-40 Y H Z941W-40 Y	DN(mm)	Dimension(mm)
	DN(mm)	L	D	D1	D2	D6	b-f	f1	z- Φd	H
	15	130	95	65	45	40	16-2	4	4- Φ14	185
	20	150	105	75	55	51	16-2	4	4- Φ14	200
	25	160	115	85	65	58	16-2	4	4- Φ14	225
	32	180	135	100	78	66	18-2	4	4- Φ18	275
	40	200	145	110	85	76	18-3	4	4- Φ18	295
	50	250	160	125	100	88	20-3	4	4- Φ18	350
	65	280	180	145	120	110	22-3	4	8- Φ18	370
	80	310	195	160	135	121	22-3	4	8- Φ18	390
	100	350	230	190	160	150	24-3	4.5	8- Φ23	435
	125	400	270	220	188	176	28-3	4.5	8- Φ25	520
	150	450	300	250	218	204	30-3	4.5	8- Φ25	610
	200	550	375	320	282	260	38-3	4.5	12- Φ30	970
	250	650	445	385	345	313	42-3	4.5	12- Φ34	930
	300	750	510	450	408	364	46-4	4.5	16- Φ34	1080
	350	850	570	510	465	422	52-4	5	16- Φ34	1250
	400	950	655	585	535	474	58-4	5	16- Φ41	1430
	450	1050	680	610	560	524	60-4	5	20- Φ41	1520
	500	1150	755	670	612	576	62-4	5	20- Φ48	1650