Butterfly Valve Series

• Cast Iron Butterfly Valves
• Ductile Iron Butterfly Valves
• Stainless Steel Butterfly Valves
• Triple Offset Butterfly Valves
• AWWA C504 Butterfly Valves
• Large Diameter Butterfly Valves
• Sanitary Butterfly Valves
• Flanged Butterfly Valves
• Lug Butterfly Valves
• Wafer Butterfly Valves
• High Vacuum Butterfly Valves

Product drawing»

Structural drawing»

Flange Metal Sealed Swing Butterfly Valve

Dimensions & constructral diagram

Main performance and specification

Nominal pressure PN/MPa	Test pressure/MPa		Suitable temperature/℃	Applicable medium
	Shell test	Sealing test
1.6	2.4	1.76	carbon steel material：≤425 Cr-Mo steel material：≤550 heat resistant stainless steel (PⅡ) material：≤650	carbon steel material: water,steam,oil,and other non-corrosive media Cr-Mo steel material: oil,etc. heat resistant stainless steel (PⅡ) material: corrosive media
2.5	3.75	2.75
4.0	6.0	4.4

The materials of main parts

body material	Part name
	body, disc, support	stem	Sealing matching materials	bolt
C carbon steel	WCB	2Cr13	Cr13/STL	35CoA
I Cr-Mo steel	ZG1Cr5Mo	25Cr2Mo1V	STL/STL	25Cr2Mo1V
PⅡheat resistant stainless steel	ZG0Cr18Ni9	0Cr18Ni9	STL/304	1Cr17Ni2

Main dimensions and weight of PN16

model： BD41 type PN1.6MPa
Nominal diameter DN(mm)	dimensions (mm)								weight (kg)
	L	D	D1	D2	b	Z-φd	H	D0
50	108	160	125	100	16	4-φ18	280	180	15
65	112	180	145	120	18	4-φ18	300	180	17
80	114	195	160	135	20	8-m18	320	200	20
100	127	215	180	155	20	8-m18	350	250	25
125	140	245	210	185	22	8-m18	380	250	34
150	140	280	240	210	24	8-m23	420	250	46
200	152	335	295	265	26	12-φ23	480	300	65
250	165	405	355	320	30	12-φ25	530	300	86
300	178	460	41O	375	30	12-φ25	620	350	120
350	190	520	470	435	34	16-φ25	670	350	165
400	216	580	525	485	36	16-φ30	710	400	225

model： BD541 type PN1.6MPa
Nominal diameter DN(mm)	Dimensions ?(mm)								weight (kg)
	L	D	D1	D2	b	Z-φd	H1	L1
200	152	335	295	265	26	12-φ23	820	362	93
250	165	405	355	320	30	12-φ25	860	362	115
300	178	460	410	375	30	12-φ25	940	440	175
350	190	520	470	435	34	16-φ25	990	440	230
400	216	580	525	485	36	16-φ30	1050	513	300
450	222	640	585	545	40	20-m30	1110	588	435
500	229	705	650	608	44	20-m34	1180	660	560
600	267	840	770	718	48	20-m41	1270	660	750
700	292	910	840	788	50	20-m41	1380	810	950
800	318	1020	950	898	52	24-φ41	1500	810	1240
900	330	1120	1050	998	54	28-m41	1620	900	1420
1000	410	1255	1170	1110	56	28-m48	1750	900	1600

model： BD941 type PN1.6MPa
Nominal diameter DN(mm)	dimensions (mm)									weight (kg)
	L	D	D1	D2	b	Z-φd	H2	L2	L3
200	152	335	295	265	26	12-φ23	870	394	467	130
250	165	405	355	320	30	12-φ25	910	394	467	150
300	178	460	410	375	30	12-φ25	960	413	597	270
350	190	520	470	435	34	16-φ25	1010	413	597	325
400	216	580	525	485	36	16-φ30	1070	455	730	405
450	222	640	585	545	40	20-m30	1130	455	730	490
500	229	705	650	608	44	20-m34	1210	525	800	700
600	267	840	700	718	48	20-m41	1300	580	920	855
700	292	910	840	788	50	20-m41	1420	580	920	1150
800	318	1020	950	898	52	24-φ41	1510	640	1040	1370
900	330	1120	1050	998	54	28-m41	1640	640	1040	1520
1000	410	1255	1170	1110	56	28-m48	1760	700	1100	1700
1200	470	1485	1390	1325	58	32-φ54	1980	700	1100	2260
1400	530	1685	1590	1525	60	36-φ54	2200	820	1210	2610
1600	600	1930	1820	1750	68	40-m58	2430	820	1210	3050

Main dimensions and weight of PN25

model:BD41 type PN2.5MPa
Nominal diameter DN(mm)	dimensions (am)								weight (kg)
	L	D	D1	D2	b	Z-φd	H	D0
50	108	160	125	100	20	4-φ18	280	180	16
65	112	180	145	120	22	8-φ18	300	180	19
80	114	195	160	135	22	8-φ18	320	200	22
100	127	230	190	160	24	8-φ23	350	250	28
125	140	270	220	188	28	8-φ25	380	250	40
150	140	300	250	218	30	8-φ25	420	250	52
200	152	360	310	278	34	12-φ25	480	300	75
250	165	425	370	332	36	12-φ30	530	300	100
300	178	485	430	390	40	16-φ30	620	350	140
350	190	500	490	448	44	16-φ34	670	350	195
400	216	61O	550	505	48	16-φ34	710	400	265

model:BD541 type? PN2.5MPa
Nominal diameter DN(mm)	dimensions (am)								weight (kg)
	L	D	D1	D2	b	Z-φd	H2	L1
200	152	360	310	278	34	12-φ25	820	362	103
250	165	425	370	332	36	12-φ30	860	362	128
300	178	485	430	390	40	16-φ30	940	440	198
350	190	550	49	448	44	16-φ34	990	440	253
400	216	610	550	505	48	16-φ34	1050	513	323
450	222	660	600	555	50	20-φ34	1110	588	470
500	229	730	660	610	52	20-φ41	1180	660	600
600	267	840	770	718	56	20-φ41	1270	660	814
700	292	955	875	815	60	24-φ48	1380	810	1030
800	318	1070	990	930	64	24-φ48	1500	810	1320
900	330	1180	1090	1025	66	28-φ54	1620	900	1550
1000	410	1305	1210	1040	68	28-φ58	1750	900	1720

model： BD941 type? PN2.5MPa
Nominal diameter DN(mm)	Dimensions ?(mm)									Weight (kg)
	L	D	D1	D2	b	Z-φd	H2	L2	L3
200	152	360	310	278	34	12-φ25	870	394	467	140
250	165	425	370	332	36	12-φ30	910	394	467	154
300	178	485	430	390	40	16-φ30	960	413	597	290
350	190	550	49	448	44	16-φ34	1010	413	597	355
400	216	610	550	505	48	16-φ34	1070	455	730	445
450	222	660	600	555	50	20-φ34	1130	455	730	540
500	229	730	660	610	52	20-φ41	1210	505	800	760
600	267	840	770	718	56	20-φ41	1300	580	920	925
700	292	955	875	815	60	24-φ48	1420	580	920	1220
800	318	1070	990	930	64	24-φ48	1510	640	1040	1450
900	330	1180	1090	1025	66	28-φ54	1640	640	1040	1610
1000	410	1305	1210	1040	68	28-φ58	1760	700	1100	1820
1200	470	1525	1420	1350	72	32-φ58	1980	700	1100	2410
1400	530	1750	1640	1560	78	36-φ65	2300	820	1210	2780

Main dimensions and weight of PN40

model： BD41 type? PN4.0MPa
Nominal diameter DN(mm)	Dimensions ?(mm)								Weight (kg)
	L	D	D1	D2	b	Z-φd	H	D0
50	108	160	125	100	20	4-φ18	280	180	16
65	112	180	145	120	22	8-φ18	300	200	19
80	114	195	160	135	22	8-φ18	320	250	22
100	127	230	190	160	24	8-φ23	350	250	28
125	140	270	220	188	28	8-φ27	380	250	40
150	140	300	250	218	30	8-φ27	420	300	52
200	152	375	320	282	38	12-φ30	480	300	80
250	165	445	385	345	42	12-φ34	530	350	110
300	178	510	450	408	46	16-φ34	620	350	155
350	190	570	510	465	52	16-φ36	670	400	215
400	216	655	585	535	58	16-φ41	710	450	290

model： BD541 type? PN4.0MPa
Nominal diameter DN(mm)	Dimensions (am)								Weight (kg)
	L	D	D1	D2	b	Z-φd	H1	L1
200	108	160	125	100	20	4-φ18	280	180	16
250	112	180	145	120	22	8-φ18	300	200	19
300	114	195	160	135	22	8-φ18	320	250	22
350	127	230	190	160	24	8-φ23	350	250	28
400	140	270	220	188	28	8-φ27	380	250	40
450	140	300	250	218	30	8-φ27	420	300	52
500	152	375	320	282	38	12-φ30	480	300	80
600	165	445	385	345	42	12-φ34	530	350	110
700	178	51O	450	408	46	16-φ34	620	350	155
800	190	570	510	465	52	16-φ36	670	400	215

model： BD941 type PN4.0MPa
Nominal diameter DN(mm)	Dimensions (am)									Weight (kg)
	L	D	D1	D2	b	Z-φd	H2	L2	L3
400	216	655	585	535	58	16-φ41	1120	455	730	470
450	222	680	610	560	60	20-φ41	1190	505	800	570
500	229	755	670	612	62	20-φ48	1280	580	920	800
600	267	890	795	730	62	20-φ54	1380	580	920	1010
700	292	995	900	835	68	24-φ54	1470	640	1040	1350
800	318	1135	1030	960	76	24-φ58	1620	640	1040	1650

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