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stainless steel gate valve

the release date：[2017-08-07] hits

stainless steel flange gate valve features:

1. compact structure, reasonable design, good valve rigidity, smooth channel, flow resistance coefficient is small.

2. sealing surface with stainless steel and hard alloy, long service life.

3. the use of flexible graphite packing, sealed and reliable, light and flexible operation.

4. drive the way manual, electric, pneumatic, gear drive. structural form: elastic-type single-gate, rigid-type single-gate and double-gate form.

5. widely used in petroleum, chemical, thermal power plants and other oil, steam pipe on the line or work to cut off the medium in the pipeline opening and closing devices.

specification for stainless steel flanged gate valves

specification for stainless steel gate valves

design and manufacture: according to the provisions of gb / t12234-89 structure length: according to the provisions of gb / t12221-89 flange surface size: according to jb79gb / t9112-9131

inspection and testing: safety jb / t9092-99gb / t13927-92 provisions of the transmission: manual, electric, gear

national standard flange gate valve product specification

nominal pressure pn (mpa)	test pressure (mpa)
nominal pressure pn (mpa)	case	sealed (liquid)	seal (gas)	sealed on
1.6	2.4	1.8	0.6	1.8
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	24.0	18.0

stainless steel flange valve applicable scope - stainless steel gate valve

shell material	applicable media	applicable temperature ℃
carbon steel (type c)	water, steam, oil	≤425
chromium-nickel-titanium (p-type)	nitric acid	≤ 200
chromium-nickel-molybdenum-titanium steel (r-type)	acetic acid	≤ 200
chromium-nickel-molybdenum (type i)	water, steam, oil	≤550

gb flange valve main part materials main part material

valves, bonnet	gate, seat	stem	stem nut	filler	hand wheel
stainless steel	high quality carbon steel hard alloy or stainless steel	chrome stainless steel	aluminum bronze	graphite asbestos packing	malleable cast iron ductile iron
stainless steel	stainless steel, stainless steel hard alloy	chrome-nickel-titanium stainless steel		lined with tetrafluoroethylene
chromium nickel molybdenum titanium steel	stainless steel, stainless steel hard alloy	chrome-nickel-titanium stainless steel		asbestos packing
chromium nickel molybdenum	alloy steel hard alloy	chromium molybdenum aluminum steel 318 (anti-sulfur series)		flexible graphite filled tetrafluoro (anti-sulfur series)

carbon steel gate main parts material:

part name	body material code				part name
body / bonnet	wcb	zgcr5mo	zg1cr18ni9ti/cf8	zg1cr18ni12mo2ti/cf8m	body/bonnet
闸板	wcb	zgcr5mo	zg1cr18ni9ti/cf8	zg1cr18ni12mo2ti/cf8m	wedge
阀杆	cr13	25cr2mov	1cr18ni9ti	1cr18ni12mo2ti	stem
填料	柔性石墨/flexible graphite		聚四氟乙烯/ptfe		packing
垫片	18-8柔性石墨/18-8flexible graphite				gasket
螺栓	35/35crmo	25crmov	1cr18ni9	1cr18ni9	bolt
适用温度	-29-425℃	-29-450℃	-40-200℃	-40-200℃	suitable temp.
适用介质	水、油品、蒸汽 water,oil,steam	蒸汽、油品 steam,oil	硝酸类 nitrc acid	醋酸类 acetic acid	suitable medium

碳钢闸阀主要外形和连接尺寸main external and connection

法兰闸阀主要外形和连接尺寸main external and connection dimension 单位unit：mm

型号	公称通径	尺寸(mm)
型号	公称通径	l	d	d1	d2	b-f	z-φd	h	d0
z41w-1.6mpa z41h-16c z41y-16i	15	130	95	65	45	14-2	4-14	170	120
	20	150	105	75	55	14-2	4-14	200	120
	25	160	115	85	65	14-2	4-14	215	140
	32	180	135	100	78	16-2	4-18	260	160
	40	200	145	110	85	16-3	4-18	290	200
	50	250	160	125	100	16-3	4-18	345	220
	65	265	180	145	120	18-3	4-18	360	240
	80	280	195	160	135	20-3	8-18	385	280
	100	300	215	180	155	20-3	8-18	430	300
	125	325	245	210	185	22-3	8-18	520	320
	150	350	280	240	210	24-3	8-23	610	350
	200	400	335	295	265	26-3	12-23	765	400
	250	450	405	355	320	30-3	12-25	895	450
	300	500	460	410	375	30-4	12-25	1145	500
	350	550	520	470	435	34-4	16-25	1200	550
	400	600	580	525	485	36-4	16-30	1400	600
	450	650	640	585	545	40-4	20-30	1500	650
	500	700	705	650	608	44-4	20-34	1630	700
	600	800	840	770	718	48-5	20-41	1830	800

主要连接尺寸

型号	公称通径	尺寸(mm)
型号	公称通径	l	d	d1	d2	b-f	z-φd	h	d0
z41w-2.5mpa z41h-25c z41y-25c z41y-25i	15	130	95	65	45	16-2	4-14	170	120
	20	150	105	75	55	16-2	4-14	200	120
	25	160	115	85	65	16-2	4-14	215	140
	32	180	135	100	78	18-2	4-18	260	160
	40	200	145	110	85	18-3	4-18	290	200
	50	250	160	125	100	20-3	4-18	345	220
	65	265	180	145	120	22-3	8-18	360	240
	80	280	195	160	135	22-3	8-18	385	280
	100	300	230	190	160	24-3	8-23	430	300
	125	325	270	220	188	28-3	8-25	520	320
	150	350	300	250	218	30-3	8-25	610	350
	200	400	360	310	278	34-3	12-25	765	400
	250	450	425	370	332	36-3	12-30	900	450
	300	500	485	430	390	40-4	16-30	1130	500
	350	550	550	490	448	44-4	16-34	1250	550
	400	600	610	550	505	48-4	16-34	1430	600
	450	650	660	600	555	50-4	20-34	1520	650
	500	700	730	660	610	52-4	20-41	1650	700
	600	800	840	770	718	56-5	20-41	1850	800

不锈钢法兰闸阀主要连接尺寸

型号	公称通径	尺寸(mm)
型号	公称通径	l	d	d1	d2	d6	b-f	z-φd	h
z41w-4.0mpa z41h-40c z41y-40c z41y-40i	15	130	95	65	45	40	16-2	4-14	170
	20	150	105	75	55	51	16-2	4-14	200
	25	160	115	85	65	58	16-2	4-14	215
	32	180	135	100	78	66	18-2	4-18	260
	40	200	145	110	85	76	18-3	4-18	290
	50	250	160	125	100	88	20-3	4-18	345
	65	280	180	145	120	110	22-3	8-18	360
	80	310	195	160	135	121	22-3	8-18	385
	100	350	230	190	160	150	24-3	8-23	430
	125	400	270	220	188	176	28-3	8-25	530
	150	450	300	250	218	204	30-3	8-25	620
	200	550	375	320	282	260	38-3	12-30	780
	250	650	445	385	345	313	42-3	12-34	900
z41w-6.4mpa z41h-64c z41y-64c z41y-64i	15	170	105	75	55	41	18-2	4-14	175
	20	190	125	90	68	51	20-2	4-18	200
	25	210	135	100	78	58	22-2	4-18	215
	32	230	150	110	82	66	24-2	4-23	270
	40	240	165	125	95	76	24-3	4-23	300
	50	250	175	135	105	88	26-3	4-23	370
	65	280	200	160	130	110	28-3	8-23	385
	80	310	210	170	140	121	30-3	8-23	400
	100	350	250	200	168	150	32-3	8-25	460
	125	400	295	240	202	176	36-3	8-30	570
	150	450	340	280	240	204	38-3	8-34	660
	200	550	405	345	300	260	44-3	12-34	820
	250	650	470	400	352	313	48-3	12-41	1000

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