Changhao Changhao Changhao Changhao Changhao
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Shanghai Changhao Valve Pipeline Engineering Co., Ltd.
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product description

Pneumatic vent butterfly valve, made of steel plate through welding, has the advantages of small size, light weight, convenient utilization. For small torque, it is easy to open or close the valve. Body has oil seal retainer. There is large expansion clearance between the disc and body, which can avoid sticking caused by thermal expansion and contraction. The valve can be equipped with varieties of actuating device, such as handwheel, gear box, electric actuator and pneumatic actuator.Vent butterfly valve is widely used in metallurgy, petroleum and other industries, to regulate gas.
 
Parameter 
Nominal pressure(MPa)0.05MPaMedium temperature-30℃~-350℃
Strength test0.1MPaApplicable mediumCold or hot air, smoke
Medium flow rate25m/sLeakage rate3%

Components materials
Components Valve bodyValve plateValve shaft
Materials Carbon steelCarbon steelCarbon steel, stainless steel 
 
Connection Dimensions(unit: mm)
DNDD1LL1L2 n-Фdb
3004053701207162208-1210
3504554201407862408-1410
40050547014092427012-1810
45057053016099929512-1810
500620580160107932512-1810
600720680180114038016-1812
700820780180124043016-1812
800920880200135049016-1812
9001040990200145054016-1814
100011401090220155059020-1814
110012401190220180064020-1814
120013401290240190069020-1814
130014401390240202076020-1816
140015401490260212081024-1816
150016401590260222086024-1816
160017401690280239098024-1816
1700184017902802590103028-2216
1800194018903002709109628-2216
1900204019903002826114632-2216
2000215020903202926119632-2616
2200236023003403126129636-2616
2400256025003603326139636-2618
2600276027003803526149640-2618
2800296029004003726159640-2618
3000319031104004098169844-3018
3200339033104404338179844-3020
3400359035104404578189848-3020
3600379037104804780199848-3020
3800400039104805000209852-3022
4000421041205205200221052-30


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