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Ventilation butterfly valve（Pneumatic）

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Ventilation butterfly valve（Pneumatic）

Product model: D641W

Nominal diameter: DN100~3200mm

Pressure range: PN0.05~0.6MPa

Applicable temperature: -40～+450℃

Connection method: flange type

Applicable medium: coal gas, dusty gas, flue gas, etc.

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Product Structure Features

The electric ventilation butterfly valve is designed in the form of a central line butterfly plate, making it have small flow resistance, large flow, and easy operation. It is often used in dust containing systems and cold or hot air gas pipelines in industries such as chemical, building materials, and power plants as a gas medium to regulate flow or cut off devices.

The Main Structure Features Include

1. The 90 degree swing opens quickly to meet the fast closing condition;

2. Bearing external structure prevents medium in the pipeline from entering the bearing;

3. Large diameter rolling bearings are used, with low friction and torque.

Main external connection dimensions

Nominal diameter		FacetoFace (Standard)	Boundary dimensions (reference)				Connection dimensions
Nominal diameter		FacetoFace (Standard)	Boundary dimensions (reference)				0.25MPa				0.6MPa
mm	inches	L	H	H0	A	B	D	D1	D2	Z-d	D	D1	D2	Z-d
50	2	108	70	286	125	193	140	110	88	4-14	140	110	88	4-14
65	21/2	112	80	306	125	193	160	130	108	4-14	160	130	108	4-14
80	3	114	95	334	125	193	190	150	124	4-18	190	150	124	4-18
100	4	120	105	354	125	193	210	170	144	4-18	210	170	144	4-18
125	5	120	120	384	125	193	240	200	174	8-18	240	200	174	8-18
150	6	120	132	409	125	193	265	225	199	8-18	265	225	199	8-18
200	8	140	160	593	165	183	320	280	254	8-18	320	280	254	8-18
250	10	140	187	650	165	283	375	335	309	12-18	375	335	309	12-18
300	12	170	220	715	165	283	440	395	363	12-22	440	395	363	12-22
350	14	170	245	814	175	334	490	445	413	12-22	490	445	413	12-22
400	16	190	270	863	175	334	540	495	463	16-22	540	495	463	16-22
450	18	190	297	918	175	334	595	550	518	16-22	595	550	518	16-22
500	20	190	322	1016	210	425	645	600	568	20-22	645	600	568	20-22
600	24	210	377	1128	210	425	755	705	667	20-26	755	705	667	20-26
700	28	210	430	1233	210	425	860	810	772	24-26	890	810	772	24-26
800	32	210	487	1344	210	425	975	920	878	24-30	975	920	878	24-30
900	36	250	537	1560	320	620	1075	1020	978	24-30	1075	1020	978	24-30
1000	40	250	587	1660	320	620	1175	1120	1078	28-30	1175	1120	1078	28-30
1200	48	250	687	1890	320	620	1375	1320	1280	32-30	1405	1340	1295	32-33
1400	56	300	760	2670	575	714	1575	1520	1480	36-30	1630	1560	1510	36-36
1600	64	300	895	2810	575	714	1790	1730	1690	40-30	1830	1760	1710	40-36
1800	72	300	995	2020	575	714	1990	1930	1890	44-30	2045	1970	1918	44-39
2000	80	300	1095	3220	656	810	2190	2130	2090	48-30	2265	2180	2125	48-42