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Home Products Butterfly Valves

Flange type flexible butterfly valve of the worm gear transmission

Available Size:

DN(mm)	40	50	65	80	100	150	200	250	300	350	400	450	500	600	650	700	750	800	900
NPS(inch)	1½"	2"	2½"	3"	4"	6"	8"	10"	12"	14"	16"	18"	20"	24"	26"	28"	30"	32"	36"

SD343	F	-	10 flexible butterfly valve
	X		16

■Purpose and characteristic

Telescopic butterfly valve is suitable for water supplying and draining, gas pipe as adjust flux and cut off medium in foodstuff,pharmacy,chemical industry, petroleum,electric power, light textile, paper making etc, with temperature≤425℃，nominal pressure ≤1.6MP,and has function of compensation pipe expand with heat and contract with cold,the main characteristic as below:

1.Novel and reasonable design, particular configuration, light and easy to operate and start and stop rapidly.

2.Besides adjust and cut off currency, compensate temperature differential in pipe, which cause function of expansion with heat and extraction with cold, flexible butterfly valve can provide convenience for installation exchange, maintenance.

3.It has characteristic of hermetical components can adjust and replace, reliable harmetic capabilitiy etc.

■Adoption standard

Design standard:GB/T12238-1989
Flange connection dimension:GB/T9113.;GB4216
GB/T9115.1-2000;GB/T9115.2-2000
Pressure test:GB/T13927-1992;JB/T9092-1999

■Main technology parameter

Nominal diameter	DN（mm）	50～2000
Nominal pressure	PN（MPa）	0.6	1.0	1.6
Ps(MPa)Test pressure	Shell test	0.9	1.5	2.4
	Seal test	0.66	1.1	1.76
	Gas seal test	0.6	0.6	0.6
Appropriate temperatuer	Metalli sealing≤425℃ rubber sealing ≤80℃
Appropriate medium	Air,water,steam,coal gas,oil.
Drive modatlity	Hand,worm wheel drive, pneumatic drive, electric drive.

■Material for main parts

Parts name	Material
Body	Cast iron, cast steel,stainless steel,Cr.Mo.Steel、alloy steel
Disc	Cast steel,Alloy steel,stainless steel,Cr.Mo.Steel
Seal ring	Rubber,Teflon,polyester lactone, stainless steel
Stem	2Cr13、 Stainless steel,Cr.Mo.Steel
Flexible tube	Cast iron,cast steel,stainless steel,Cr.Mo.steel
Packing	Flexible graphite

DN		H1	H2	H3	最大长度Lmin	最小长度Lmin	设计长度L	D1									重量kg
mm	in	H1	H2	H3	最大长度Lmin	最小长度Lmin	设计长度L	0.6MPa	1.0MPa	1.6MPa	0.6MPa		1.0MPa		1.6MPa		重量kg
50	2	309	112	117	164	138	151	110	125	125	4-14	M12	4-18	M16	4-19	16	14.3
65	21/2	337	112	117	190	154	172	130	145	145	4-14	M12	4-18	M16	4-19	16	16.8
80	3	347	135	117	195	163	177	150	160	160	4-18	M16	8-18	M16	8-19	16	18.7
100	4	373	142	117	227	184	206	170	180	180	4-18	M16	8-18	M16	8-19	16	26.2
125	5	405	160	117	254	201	215	200	210	210	8-18	M16	8-18	M16	8-19	16	33.6
150	6	440	180	117	240	195	225	225	240	240	8-18	M16	8-22	M20	8-23	20	37.3
200	8	612	225	212	265	215	245	280	295	295	8-18	M16	8-22	M20	12-23	20	68.7
250	10	693	266	212	295	235	265	335	350	350	12-18	M16	12-22	M20	12-28	24	86.8
300	12	747	290	212	308	254	282	395	400	400	12-22	M20	12-22	M20	12-28	24	120
350	14	802	320	212	325	271	300	445	460	460	12-22	M20	16-22	M20	16-28	24	157
400	16	991	400	265	345	283	314	195	515	515	16-22	M20	16-26	M24	16-31	27	227
450	18	1037	425	265	370	314	340	550	565	565	16-22	M20	20-26	M24	20-31	27	260
500	20	1127	480	265	377	316	346	600	620	620	20-22	M20	20-26	M24	20-34	30	300
600	22	1377	520	380	446	388	417	705	725	725	20-26	M24	20-30	M27	20-37	33	540
700	24	1796	577	380	445	395	425	810	840	840	24-26	M24	24-30	M27	20-37	33	684
800	32	1484	620	270	479	425	455	920	950	950	24-30	M27	24-33	M30	24-40	36	952
900	36	1676	715	285	515	455	485	1020	1050	1050	24-30	M27	28-33	M33	28-40	36	1290
1000	40	1760	760	285	525	465	495	1120	1160	1160	28-30	M27	28-36	M36	28-43	39	1456
1200	48	2018	900	285	574	495	542	1340	1380	1380	32-33	M30	32-39	M36	32-49	45	2310
1400	56	2363	1000	425	599	542	572	1560	1590	1590	36-36	M33	36-42	M39	36-49	45	2816
1600	64	2723	1160	425	640	615	615	1760	1820	1820	40-36	M33	40-48	M45	40-56	52	4218
1800	72	2844	1247	425	725	695	695	1970	2020	2020	44-39	M36	44-48	M45	44-56	52	5650
2000	80	3127	1362	425	764	722	722	2180	2230	2230	48-42	M39