Ventilation butterfly valve（Pneumatic）

Technical Parameters

Model number: 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.

Product Details

Product Structure Features

The Pneumatic 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

DN		Structure length	Overall dimensions(reference value）			Connection size（Standard value）						weight（kg）
DN		Structure length	Overall dimensions(reference value）			0.05MPa和0.25MPa			0.6MPa
mm	inch	L	H	H1	A	D	D1	n-d	D	D1	n-d
50	2	108	70	337	180	140	110	4-14	140	110	4-14	16
65	2-1/2	112	80	357	180	160	130	4-14	160	130	4-14	17
80	3	114	95	385	180	190	150	4-18	190	150	4-18	19
100	4	127	105	405	180	210	170	4-18	210	170	4-18	22
125	5	140	120	483	245	240	200	8-18	240	200	8-18	27
150	6	140	132	508	245	265	225	8-18	265	225	8-18	31
200	8	152	160	566	245	320	280	8-18	320	280	8-18	47
250	10	165	187	623	245	375	335	12-18	375	335	12-18	68
300	12	178	220	750	355	440	395	12-22	440	395	12-22	79
350	14	190	245	803	355	490	445	12-22	490	445	12-22	130
400	16	216	270	852	355	540	495	16-22	540	495	16-22	141
450	18	222	297	907	355	595	550	16-22	595	550	16-22	190
500	20	229	322	960	355	645	600	20-22	645	600	20-22	225
600	24	267	377	1080	550	755	705	20-26	755	705	20-26	245
700	28	292	430	1185	550	860	810	24-26	860	810	24-26	320
800	32	318	487	1300	550	975	920	24-30	975	920	24-30	405
900	36	330	537	1400	550	1075	1020	24-30	1075	1020	24-30	500
1000	40	410	587	1500	550	1175	1120	28-30	1175	1120	28-30	700
1200	48	470	702	1825	600	1375	1320	32-30	1405	1340	32-33	750

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