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Product Description:
BD343H three eccentric butterfly valve insulation butterfly valve, also known as the butterfly valve in the general three eccentric metal seal on the outside of the body welded with metal jacket, butterfly valve on both sides of the body with a jacket jacket interface , Can contain steam or other overheating gas to prevent the medium from freezing or crystallization at normal temperature. Insulation butterfly valve flange than ordinary metal hard sealing butterfly valve to one or two specifications, mainly for petroleum, chemical, metallurgical, pharmaceutical and other systems. Insulation butterfly valve BD343H / BD643H / BD943H.

Working principle:
BD343H three Eccentric butterfly valve body and butterfly valve design using three-dimensional eccentric principle, so that the sealing surface of the space trajectory to achieve the most ideal, no sealing between the wear and tear, without interference, combined with sealing material selection of a reasonable seat Welding STL alloy, so that the entire seat of the seal, high temperature resistance, wear resistance, corrosion resistance can be reliably guaranteed.

Features:
☆ thermal insulation effect is good, energy saving, long life, etc. Advantage is the ideal device for sulfur back to the device.
☆ using three-dimensional eccentric design, the sealing surface of the space trajectory to achieve the most ideal.
☆ small opening torque, flexible and convenient and three-dimensional eccentric structure can make the more close off the butterfly tight, more reliable sealing.
☆ There is no wear and tear between the sealing pair, no interference, combined with sealing material choose a reasonable seat surfacing STL alloy, so that the entire seat of the seal, high temperature resistance, wear resistance, corrosion resistance can be reliably guaranteed.

BD ( 3/6/9 ) 43H- 10 C. PRV series of insulation butterfly valve

DN (mm)		Structure length (standard value)		Dimensions (reference value)										Connection size (standard value)						48-48 Reference Weight D1341H (kg)
DN (mm)		L		H	BDd343H			BDd643H			BDd943H			PN0.6MPa			PN1.6MPa
mm	inch	Brief	Long	H	H1	A1	B1	H2	A2	B2	H3	A3	B3	D	D1	Zd	D	D1	Zd
50	2	108	150	112	350	180	200	625	245	72	530	250	255	140	110	4-14	165	125	4-18	17
65	2 1/2	112	170	115	370	180	200	625	245	72	530	250	255	160	130	4-14	185	145	4-18	20
80	3	114	180	120	380	180	200	645	245	72	565	250	255	190	150	4-18	200	160	8-18	23
100	4	127	190	138	420	180	200	675	355	92	600	250	255	210	170	4-18	220	180	8-18	25
125	5	140	200	164	460	180	200	715	355	92	640	250	255	240	200	8-18	250	210	8-18	40
150	6	140	210	175	555	270	280	800	355	92	705	300	315	265	225	8-18	285	240	8-22	47
200	8	152	230	200	760	400	425	850	250	170	775	300	315	320	280	8-18	340	295	8-22	60
250	10	165	250	243	830	400	425	925	250	170	945	300	315	375	335	12-18	365	350	12-22	95
300	12	178	270	250	895	450	560	1035	450	220	1070	300	315	440	395	12-22	445	400	12-22	124
350	14	190	290	280	950	450	560	1070	450	220	1140	300	315	490	445	12-22	505	460	16-22	181
400	16	216	310	305	1190	535	580	1190	450	220	1210	300	315	540	495	16-22	565	515	16-22	260
450	18	222	330	350	1255	535	580	1250	650	280	1335	575	714	595	550	16-22	615	565	16-26	338
500	20	229	350	380	1305	535	580	1290	650	280	1415	575	714	645	600	20-22	670	620	20-26	360
600	24	267	390	445	1340	570	660	1455	850	380	1605	656	810	755	705	20-26	780	725	20-26	540
700	28	292	430	480	1520	750	550	1585	850	380	1844	656	810	860	810	24-26	895	840	20-30	580
800	32	318	470	530	1710	750	550	1700	1250	380	2040	656	810	975	920	24-30	1015	950	24-30	845
900	36	330	510	580	1810	750	550	1965	1250	380	2255	785	863	1075	1020	24-30	1115	1050	24-33	1050
1000	40	410	550	650	1960	900	750	2015	1250	380	2380	785	863	1175	1120	28-30	1230	1160	28-33	1500
1200	48	470	630	760	2250	1000	925	2250	1250	380	2640	785	863	1405	1340	32-33	1455	1380	28-36	2000
1400	56	530	710	850	2435	1000	925				2886			1630	1560	36-36	1675	1590	32-39	3000
1600	64	600	790	1030	2780	1000	925				3156			1830	1760	40-36	1915	1820	36-42	4700
1800	72	670	870	1230	3020	1100	980				3421			2045	1970	44-39	2115	2020	40-48	6500
2000	80	760	950	1350	3270	1100	980				3685			2265	2180	48-42	2325	2230	44-48	8700

BD ( 3/6/9 ) 43H- 25 C. PRV series of insulation butterfly valve

DN (mm)		Structure length (standard value)		Dimensions (reference value)										Connection size (standard value)						48-48 Reference Weight D1341H (kg)
DN (mm)		L		H	BDd343H			BDd643H			BDd943H			PN0.6MPa			PN1.6MPa
mm	inch	Brief	Long	H	H1	A1	B1	H2	A2	B2	H3	A3	B3	D	D1	Zd	D	D1	Zd
50	2	108	150	112	350	180	200	625	245	72	530	250	255	165	125	4-14	165	125	4-18	19
65	2 1/2	112	170	115	370	180	200	625	245	72	530	250	255	185	145	4-14	185	145	8-18	22
80	3	114	180	120	380	180	200	645	245	72	565	250	255	200	160	4-18	200	160	8-18	25
100	4	127	190	138	420	180	200	675	355	92	600	250	255	220	180	4-18	235	190	8-22	28
125	5	140	200	164	460	180	200	715	355	92	640	250	255	250	210	8-18	270	220	8-26	43
150	6	140	210	175	555	270	280	800	355	92	705	300	315	285	240	8-18	300	250	8-26	50
200	8	152	230	200	760	400	425	850	250	170	775	300	315	340	295	8-18	360	310	12-26	64
250	10	165	250	243	830	400	425	925	170	945	300	315	405	355	12-18	425	370	12-30	99
300	12	178	270	250	895	450	560	1035	450	220	1070	300	315	460	410	12-22	485	430	16-30	130
350	14	190	290	280	950	450	560	1070	450	220	1140	300	315	520	470	12-22	555	490	16-33	188
400	16	216	310	305	1190	535	580	1190	450	220	1210	300	315	580	525	16-22	620	550	16-36	270
450	18	222	330	350	1255	535	580	1250	650	280	1335	575	714	640	585	16-22	670	600	20-36	350
500	20	229	350	380	1305	535	580	1290	650	280	1415	575	714	715	650	20-22	730	660	20-36	375
600	24	267	390	445	1340	570	660	1455	850	380	1605	656	810	840	770	20-26	845	770	20-39	560
700	28	292	430	480	1520	750	550	1585	850	380	1844	656	810	910	840	24-26	960	875	24-42	610
800	32	318	470	530	1710	750	550	1700	1250	380	2040	656	810	1025	950	24-30	1085	990	24-48	880
900	36	330	510	580	1810	750	550	1965	1250	380	2255	785	863	1125	1050	24-30	1185	1090	28-48	1100
1000	40	410	550	650	1960	900	750	2015	1250	380	2380	785	863	1255	1170	28-30	1320	1210	28-56	1600
1200	48	470	630	760	2250	1000	925	2250	1250	380	2640	785	863	1485	1390	32-33	1530	1420	32-56	2150
1400	56	530	710	850	2435	1000	925				2886			1685	1590	36-36	1755	1640	36-62	3200
1600	64	600	790	1030	2780	1000	925				3156			1930	1820	40-36	1975	1830	40-62	5000
1800	72	670	870	1230	3020	1100	980				3421			2130	2020	44-39	2195	2070	44-70	6800
2000	80	760	950	1350	3270	1100	980				3685			2345	2230	48-42	2425	2300	48-70	9100

※ Note: Dd- stands for multi-level seal structure

BD ( 3/6/9 ) 43H- 40 C. PRV series of insulation butterfly valve

DN (mm)		Structure length (standard value)		Dimensions (reference value)										Connection size (standard value)
DN (mm)		L		H	DBd373H			DBd673H			BDd973H			PN4.0MPa
mm	inch	Short Brief	Long Long	H	H1	A1	B1	H2	A2	B2	H3	A3	B3	D	D1	Zd
50	2	108	150	112	350	180	200	625	250	170	530	250	255	165	125	4-14
65	2 1/2	112	170	115	370	180	200	625	250	170	530	250	255	185	145	8-18
80	3	114	180	120	380	180	200	645	250	170	565	250	255	200	160	8-18
100	4	127	190	138	420	180	200	675	250	170	600	250	255	235	190	8-22
125	5	140	200	164	460	180	200	715	450	220	640	250	255	270	220	8-26
150	6	140	210	175	555	270	280	800	450	220	705	300	315	300	250	8-26
200	8	152	230	200	760	400	425	850	450	220	775	300	315	375	320	12-30
250	10	165	250	243	930	400	425	925	450	280	945	300	315	450	385	12-33
300	12	178	270	250	895	450	560	1035	650	280	1070	300	315	515	450	16-33
350	14	190	290	280	950	450	560	1070	650	280	1140	300	315	580	510	16-36
400	16	216	310	305	1190	535	580	1190	650	280	1210	300	315	660	585	16-39
450	18	222	330	350	1255	535	580				1335	575	714	685	610	20-39
500	20	229	350	380	1305	535	580				1415	575	714	755	670	20-42

※ Note: Flange standard: GB / T9113.1-2000 GB / T9113.2-2000 GB / T911.5.1-2000 GB / T9115.2-2000
Note: The table H1, H2, H3 size can be based on User needs longer (pole butterfly valve), the product generally press a short series, if you need to order a long series or special materials.

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The previous：Soft sealing flange butterfly valve