SD343 telescopic butterfly valve

Application characteristics

The telescopic butterfly valve is suitable for food, medicine, chemical industry, petroleum, electric power, textile, paper and other water supply and drainage, gas pipelines for regulating the flow and stopping the medium, and has the function of compensating the thermal expansion and contraction of the pipeline.

Connection size

Nominal diameter DN	Overall dimensions (reference value)	Flange size and bolt hole size (standard value)
H	H1	Design maximum length	Design Minimum length	Design Length L	A	B	O. 6MPa	1. OMPa	1.6 MPa
millimeter	inches	D	D1	D2	n.d	D	D1	D2	n.d	D	D1	D2	n-d
50	2	80	309	169	142	150	180	200	140	110	88	4.14	165	125	99	4 to 18	165	125	99	4 to 18
65	2 1/2	95	337	186	159	170	180	200	160	130	108	4.14	185	145	118	4 to 18	185	145	118	4 to 18
80	3	98	347	194	167	180	180	200	190	150	124	4.18	200	160	132	8 to 18	200	160	132	8 to 18
100	4	114	373	219	188	190	180	200	210	170	144	4.18	220	180	156	8 to 18	220	180	156	8 to 18
125	5	128	405	225	195	200	180	200	240	200	174	8.18	250	210	184	8 to 18	250	210	184	8 to 18
150	6	139	440	240	205	210	270	280	265	225	199	8 to 18	285	240	211	8-22	285	240	211	8-22
200	8	174	612	259	219	230	400	425	320	280	254	8 -	340	295	266	8-22	340	295	266	12 and 22
250	10	215	693	384	239	250	400	425	375	335	309	12-18	395	350	319	12 and 22	405	355	319	12-26
300	12	245	747	309	259	270	450	560	440	395	363	12 and 22	445	400	370	12 and 22	460	410	370	12.26
350	14	270	802	328	275	290	450	560	490	445	413	12 and 22	505	460	429	16-22	520	470	429	16 and 26
400	16	305	991	347	287	310	535	580	540	495	463	16-22	565	515	480	16 and 26	580	525	480	16 and 30
450	18	325	1037	378	318	330	535	580	595	550	518	16-22	615	565	530	20 to 26	640	585	548	20-30
500	20	360	1127	399	339	350	535	580	645	600	568	16-22	670	620	582	20 to 26	715	650	609	20-33
600	24	445	1377	430	362	390	570	660	755	705	667	20 to 26	780	725	682	20-30	840	770	720	20-36
seven hundred	28	505	1496	469	399	430	750	550	860	810	772	24-26	895	840	794	24 to 30	910	840	794	24-36
800	32	560	1584	529	454	470	750	550	975	920	878	24 to 30	1015	950	901	24 to 33	1025	950	901	24-39
900	36	630	1676	569	494	510	750	550	1075	1020	978	24 to 30	1115	1050	1001	28 and 33,	1125	1050	1001	28-39
1000	40	680	1760	608	534	550	900	750	1175	1120	1078	28 and 30	1230	1160	1112	28-36	1255	1170	1112	28-42
1200	48	795	2018	720	614	630	1000	925	1405	1340	1295	32-33	1455	1380	1328	32-39	1485	1390	1328	32-48
1400	56	900	2363	747	665	710	1000	925	1620	1560	1510	36-36	1675	1590	1530	36-42	1685	1590	1530	36 to 48
1600	64	1100	2723	850	745	790	1000	925	1820	1760	1710	40-36	1915	1820	1750	40-48	1930	1820	1750	40-56
1800	72	1124	2844	920	820	870	1100	980	2045	1970	1718	44-39	2115	2020	1950	44-48	2130	2020	1950	44-56
2000	80	1292	3127	1010	900	950	1100	980	2265	2180	2125	48-42	2325	2230	2150	48-48	2345	2230	2150	48-62.

Precautions

1, the telescopic butterfly valve must be placed flat before installation, do not bump at will.
2, the telescopic butterfly valve factory structure length is the minimum length, installation, pull to the installation length (that is, the design length).
3, when the pipe length exceeds the installation length of the telescopic valve, please adjust the pipe interval, do not force the telescopic valve, so as not to damage the telescopic valve.
4, the telescopic butterfly valve can be installed in any position, when the temperature compensation is done, after the pipeline installation is completed, it is necessary to add supports at both ends along the pipeline axis to prevent the telescopic valve tube from being pulled out

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