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Flange connection bellows globe valve

Qiaofa Machinery Manufacturing Co., Ltd., as an industry-leading steam system solutions expert, is committed to providing customers with premium Flange connection bellows globe valve products and professional services. With mature production processes and a comprehensive technical support system, we offer precise product selection recommendations and customized solutions tailored to actual operating conditions.

We adhere to customer-oriented principles and drive innovation through technology, providing comprehensive services from product selection to technical consultation, helping enterprises enhance steam system efficiency and create greater value.

Detailed Introduction

Structure and main features of bellows valves

1The double sealing of packing and bellows realizes zero leakage.

2.The body and bonnet are connected by studs with good technological performance.

3.The stem of the valve has the packing box of ordinary valves,and under this packing box,the moveable sealing part bellows is installed inside the bonnet,so that the medium is sealed in the valve cavity outside the stem and cannot enter the packing box.Therefore,the valve is more reliable than ordinary valves in the prevention of leakage,ensuring sealing between stem and bonnet

4.The bellows is designed to be located in the cavity of bonnet,avoiding direct erosion with media and enhancing service life of the bellows.

5.The bellows adopts 2-6 times overlapping,Ensure to use Pressure avoiding valve leakage due to single-layer damage of the bellows and prolonging service life of the valve.

6.As the bellows is designed to be relatively long,the valve is featured by high opening height,reduced fluid main resistance and low flow resistance coefficient.

Application specification

1.Design and manufacturing:

JB/T11150、GB/T12235、DIN3239、DIN3202、BS1873、MSS-SP-117、 ASME B16.34、API 601、GB/T 12234

2.Connection end size:

(1)Socket end size as per:ASME B16.11;JB/T1751

(2)GB12224、ASME B16.25 and DIN3239 Butt welding end conforms to: GB12224;ASME B16.25;DIN3239

(3)Flange end size as per JB/T79、JB/T82、HG20592、GBT9113and ASME B16.5

(4)Thread end size as per:ANSI B1.20.1;JB/T7306

3.Valve inspection and testing as per:API598、GB/T26480

4.Materials as per ANSI/ASTM,GB699 and GB1220

5.Body material:WCB;CF8;CF8M;CF3;CF3M;CN7M;A105;LF2;304(L); 316(L);F347;F321;F51;Monel;Alloy,etc.

6.Bellows material:1Cr8Ni9Ti,00Cr17Ni14Mo2,0Cr18 Ni12M2Ti,GH625,GH4169, Gh202,Monel 400,Inconel 625

主要零件材料(锻件)Materials for main parts(Casting)

主要零件名称 Materials Part name	材料 Material	材料 Material	材料 Material
阀体Body	A105	F304(L)	F316(L)
阀盖Bonnet	A105	F304(L)	F316(L)
上下阀杆 Back stem and lower stem	420	304(L)	316(L)
波纹管Bellows	F321	321/304(L)	F316/316L
填料函Stuffing Box	A105	304(L)	316(L)
阀座、阀瓣、闸板 Seat,Disc&Wedge disc	13Cr	F304(L)	F316(L)
垫片Gasket	304+柔性石墨 304+Flexible Graphite	304+柔性石墨 304+Flexible Graphite	304+柔性石墨 304+Flexible Graphite
填料Packing	柔性石墨 Flexible Graphite	柔性石墨 Flexible Graphite	柔性石墨 Flexible Graphite
螺栓Bolt	B7	B8	B8
阀杆螺母Yoke nut	40	13Cr	13Cr

主要零件材料(铸件)Materials for main parts(Casting)

主要零件名称 Materials Part name	材料 Material	材料 Material	材料 Material
阀体Body	WCB	CF8(M)	CF3(M)
阀盖Bonnet	WCB	CF8(M)	F316(L)
上下阀杆 Back stem and lower stem	13Cr	304(L)	316(L)
波纹管Bellows	1Cr18i9Ti	321/304(L)	F316/316L
填料函Stuffing Box	25	304(L)	316(L)
阀座、阀瓣、闸板 Seat,Disc&Wedge disc	13Cr	F304(L)	F316(L)
垫片Gasket	304+柔性石墨 304+Flexible Graphite	304+柔性石墨 304+Flexible Graphite	304+柔性石墨 304+Flexible Graphite
填料Packing	柔性石墨 Flexible Graphite	柔性石墨 Flexible Graphite	柔性石墨 Flexible Graphite
螺栓Bolt	B7	B8	B8
阀杆螺母Yoke nut	铅青铜	铅青铜	铅青铜

Note:The materials of packing and gaskets can be supplied according to customer requirements.

法兰连接波纹管截止阀 Flange connection bellows globe valve

PN1.6~4.0MPa (锻造)

结构示意图Structural diagram

Application specification

1.Design and manufacturing as per JB/T11150、 GB/T12235、DIN3230

2.Face-to-face dimension as per DIN3202

3.Flange connection size as per DIN2543、GB/T9113

4.Valve inspection and testng as per GB/T13927、JB/T9092

性能规范Performance specification

主要外形尺寸Main external dimension

DN	L	D	D1	D2	D3	T	H	n-Φ	D0
15	130	95	65	45	45	16	306	4-14	148
20	150	105	75	58	58	18	306	4-14	148
25	160	115	85	68	68	18	310	4-14	148
32	180	140	100	78	78	18	420	4-18	196
40	200	150	110	88	88	18	420	4-18	196
50	230	165	125	102	102	20	432	4-18	196

法兰连接波纹管截止阀 Flange connection bellows globe valve

PN2.5~4.0MPa (铸造)

结构示意图Structural diagram

Application specification

1.Design and manufacturing as per JB/T11150、 GB/T12235、DIN3230

2.Face-to-face dimension as per DIN3202、GB/T12221

3.Flange connection size as per DIN2543、GB/T9113

4.Valve inspection and testing as per to GB/T13927、JB/T9092

性能规范Performance specification

主要外形尺寸Main external dimension

	DN	L	D	D1	D2	T	n-Φ	H	D0
PN2.5MPa	65	290	185	145	122	22	8-18	495	220
	80	310	200	160	138	24	8-18	548	250
	100	350	235	190	162	24	8-22	626	320
	125	400	270	220	188	26	8-26	710	320
	150	480	300	250	218	28	8-26	855	400
	200	600	360	310	278	30	12-26	1016	500
	250	730	425	370	335	32	12-30	1240	600
	300	850	485	430	395	34	16-30	1287	600
	350	980	555	490	450	38	16-33	1416	600
	400	1100	620	550	505	40	16-36	1548	850
	450	1200	670	600	548	46	20-36	1748	850
	500	1250	730	660	609	48	20-36	1790	850
PN4.0MPa	65	290	185	145	122	22	8-18	495	220
	80	310	200	160	138	24	8-18	548	250
	100	350	235	190	162	24	8-22	626	320
	125	400	270	220	188	26	8-26	710	320
	150	480	300	250	218	28	8-26	855	400
	200	600	375	320	285	34	12-30	1016	500
	250	730	450	385	345	38	12-33	1240	600
	300	850	515	450	410	42	16-33	1287	600
	350	980	580	510	465	46	16-36	1416	600
	400	1100	600	585	535	50	16-39	1548	850
	450	1200	685	610	560	57	20-39	1748	850
	500	1250	755	670	615	57	20-42	1790	850

法兰连接波纹管截止阀 Flange connection bellows globe valve

PN1.6MPa (锻造)

结构示意图Structural diagram

Application specification

1.Design and manufacturing as per JB/T11150、 GB/T12235、DIN3230

2.Face-to-face dimension as per DIN3202

3.Flange connection size as per DIN2543、GB/T9113

4.Valve inspection and testing as per GB/T13927、JB/T9092

性能规范Performance specification

主要外形尺寸Main external dimension

DN	L	D	D1	D2	b	d	n-Φ	H	D0
15	130	95	65	45	14	13	4-14	155	148
20	150	105	75	58	16	18	4-14	158	148
25	160	115	85	68	16	22	4-14	161	148
32	180	140	100	78	18	25	4-18	161	148
40	200	150	110	88	18	36	4-18	205	196
50	230	165	125	102	20	46	4-18	215	196

法兰连接波纹管截止阀 Flange connection bellows globe valve

PN1.6MPa (铸造)

结构示意图Structural diagram

Application specification

1.Design and manufacturing as per JB/T11150、GB/T12235、 DIN3230

2.Face-to-face dimension as per DIN3202

3.Flange connection size as per DIN2543、GB/T9113

4.Valve inspection and testing as per GB/T13927、JB/T9092

性能规范Performance specification

主要外形尺寸Main external dimension

DN	L	D	D1	D2	T	n-Φ	H	D0
65	290	185	145	122	20	4-18	232	220
80	310	200	160	138	22	4-18	257	220
100	350	235	190	162	24	8-18	288	220
125	400	270	220	188	26	8-18	329	250
150	480	300	250	218	26	8-22	372	280
200	600	360	310	278	30	12-22	429	360
250	730	425	370	335	32	12-26	484	400

法兰连接波纹管截止阀 Flange connection bellows globe valve

Class150~1500(锻造)

结构示意图Structural diagram

Application specification

1.Design and manufacturing as per JB/T11150、BS5352、MSS-SP-117、ASME B 16.34

2.Face-to-face dimension as per ANSI B16.10

3.Flange connection size as per ASME B16.25

4.Valve inspection and testing as per API 598

性能规范Performance specification

主要外形尺寸Main external dimension

Class	NPS	L	D	D1	D2	D3	T	H	n-Φ	D0
150Lb	1/2	108	89	60.5	35	13	12	306	4-15	148
	3/4	117	98	70	43	19	12	306	4-15	148
	1	127	108	79.5	51	25	12	310	4-15	148
	1 1/4	140	117	89	64	32	13	420	4-15	196
	1 1/2	165	127	98.5	73	38	15	420	4-15	196
	2	203	152	120.5	92	51	16	432	4-19	196
300Lb	1/2	152	95	66.7	35	13	15	306	4-16	148
	3/4	178	120	82.5	43	19	16	306	4-19	148
	1	203	125	88.9	51	25	18	310	4-19	148
	1 1/4	216	135	98.4	64	32	19	420	4-19	196
	1 1/2	229	155	114.3	73	38	21	420	4-22	196
	2	267	165	127	92	51	23	432	8-19	196
600Lb	1/2	165	95	66.7	35	13	15	306	4-16	148
	3/4	190	120	82.5	43	19	16	306	4-19	148
	1	216	125	88.9	51	25	18	310	4-19	148
	1 1/4	229	135	98.4	64	32	21	420	4-19	196
	1 1/2	241	155	114.3	73	38	23	420	4-22	196
	2	292	165	127	92	51	26	432	8-19	196
1500Lb	1/2	216	120	82.6	35	13	29	442	4-22	220
	3/4	229	130	88.9	43	19	32	442	4-22	220
	1	254	150	101.6	51	25	35	448	4-26	220
	1 1/4	279	160	111	64	32	35	680	4-26	320
	1 1/2	305	180	123.8	73	38	38.5	680	4-30	320
	2	368	215	165	92	50	45	688	8-26	320

法兰连接波纹管截止阀Flange connection bellows globe valve

Class 150~1500

结构示意图Structural diagram

Application specification

1.Design and manufacturing as per JB/T11150、BS 5352、MSS-SP-117、ASME B 16.34

2.Face-to-face dimension as per ANS B16.10

3.Flange connection size as per ASME B16.5

4.Valve inspection and testing as per API 598

性能规范Performance specification

主要外形尺寸Main external dimension

Class	NPS	L	D	D1	D2	T	n-Φ	H	D0
150Lb	2 1/2	216	178	139.5	105	18	4-19	387	200
	3	241	190	152.5	127	19	4-19	411	250
	4	292	229	190.5	157	24	8-19	454	250
	5	356	254	216	186	24	8-22	455	355
	6	406	279	241.5	216	26	8-22	541	355
	8	495	343	298.5	270	29	12-25	651	450
	10	622	406	362	324	31	12-25	800	450
	12	698	483	432	381	32	12-29	1230	500
	14	787	533	476.5	413	35	16-29	1450	600
	16	914	597	534.5	470	37	16-32.5	1645	1645
	18	978	635	578	544	40	8-22	1748	850
300Lb	2 1/2	292	190	149	105	26	8-22	387	200
	3	318	210	168.5	127	29	8-22	411	250
	4	356	255	200	157	32	8-22	454	250
	5	400	280	235	186	35	8-22	455	355
	6	444	320	270	216	37	12-22	541	355
	8	559	380	330	270	42	12-26	651	450
	10	620	445	387.5	324	48	16-29	800	450
	12	711	520	451	381	51	16-32	1231	500
	14	838	585	514.5	413	54	20-32	1450	600
	16	864	650	571.5	470	58	20-35	1645	600
	18	978	710	628.5	533	61	24-35	1784	850
600Lb	2 1/2	330	190	149.2	105	29	8-22	387	200
	3	356	210	168.3	127	32	8-22	411	250
	4	432	275	215.9	157	38	8-26	454	250
	5	508	330	266.7	186	45	8-29	455	355
	6	559	355	292.1	216	48	12-29	541	355
	8	660	420	349.2	270	56	12-32	651	450
	10	787	510	431.8	324	64	16-35	800	450
	12	838	560	489	381	67	20-35	1231	500
	14	889	605	527	413	70	20-39	1450	600
	16	991	685	603.2	470	77	20-42	1645	600
	18	1020	745	654	533	83	20-45	1748	850
1500Lb	2 1/2	419	245	190.5	105	48	8-30	820	400
	3	470	265	203	127	54	8-33	1092	500
	4	546	310	241.5	157	61	8-36	1305	500

Flange connection bellows globe valve

承插焊连接波纹管截止阀

带锁对接焊连接波纹管截止阀

法兰连接波纹管截止阀

对接焊连接波纹管截止阀