Butterfly Valve Series

• Cast Iron Butterfly Valves
• Ductile Iron Butterfly Valves
• Stainless Steel Butterfly Valves
• Triple Offset Butterfly Valves
• AWWA C504 Butterfly Valves
• Large Diameter Butterfly Valves
• Sanitary Butterfly Valves
• Flanged Butterfly Valves
• Lug Butterfly Valves
• Wafer Butterfly Valves
• High Vacuum Butterfly Valves

Product drawing»

Structural drawing»

Pneumatic Ventilation Butterfly Valve

product drawing

The introduction of product

TD641W pneumatic ventilation butterfly valve is manufactured by welded steel plate, with the features of short structural dimensions, light weight, easy to install and so on. The driving torque of TD641W pneumatic ventilation butterfly valve is small, open and close is flexible, and easy to operate. Body has sealing collar, and there is no visible gap between the sealing, the leakage rate is small. The expansion gap between disc and body is large and can prevent the block phenomenon caused by thermal expansion and cool contraction. TD641W pneumatic ventilation butterfly valve can be equipped with a variety of driving devices, such as manual devices, turbine drive devices, acutating devices, electric devices. Ventilation butterfly valve is widely used in metallurgy, petrochemical, power, building materials, mining and other industrial pipelines, controls or regulates the gas medium.

Dimensions & constructral diagram

The main external and connection dimensions of TD641W(unit：mm)

DN	D	D1	L	L1	L2	n-Фd	b
300	405	370	120	716	220	8-12	10
350	455	420	140	786	240	8-14	10
400	505	470	140	924	270	12-18	10
450	570	530	160	999	295	12-18	10
500	620	580	160	1079	325	12-18	10
600	720	680	180	1140	380	16-18	12
700	820	780	180	1240	430	16-18	12
800	920	880	200	1350	490	16-18	12
900	1040	990	200	1450	540	16-18	14
1000	1140	1090	220	1550	590	20-18	14
1100	1240	1190	220	1800	640	20-18	14
1200	1340	1290	240	1900	690	20-18	14
1300	1440	1390	240	2020	760	20-18	16
1400	1540	1490	260	2120	810	24-18	16
1500	1640	1590	260	2220	860	24-18	16
1600	1740	1690	280	2390	980	24-18	16
1700	1840	1790	280	2590	1030	28-22	16
1800	1940	1890	300	2709	1096	28-22	16
1900	2040	1990	300	2826	1146	32-22	16
2000	2150	2090	320	2926	1196	32-26	16
2200	2360	2300	340	3126	1296	36-26	18
2400	2560	2500	360	3326	1396	36-26	18
2600	2760	2700	380	3526	1496	40-26	18
2800	3960	2900	400	3726	1596	40-26	18
3000	3190	3110	400	4098	1698	44-30	20
3200	3390	3310	440	4338	1798	44-30	20
3400	3590	3510	440	4578	1898	48-30	20
3600	3790	3710	480	4780	1998	48-30	20
3800	4000	3910	480	5000	2098	52-30	22
4000	4210	4120	520	5200	2210	52-30	22

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