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

Pneumatic hard seal butterfly valve utilized a U shape seal ring which is made of stainless steel. The elastic seal ring connect with eccentric disc which has been polished. The disc separates form sealing face when valve opened and connect with sealing face when valve closed to realize sealing, having the advantages of long service life and good sealing. Applicable temperature belows 550℃. Pneumatic hard seal butterfly valve is widely used for pipelines to regulate flow or closure fluid in metallurgy, petroleum, gas and other industries.
 
Characteristics   
1. The butterfly valve has simple structure, light weight and convenient utilization.
2. The valve utilizes U shape stainless steel seal ring, having elasticity. The seal ring, cooperating with disc, ensure the excellent seal with the disc, under low temperature or high temperature. 
3. Three dimensional eccentricity of valve is calculated strictly. U shape seal ring has advantages of long service life and excellent seal.
4. Seal facing overlay with STL, has the advantages of wear resistance and long service life.
5. The valve has unique structure and is convenient to use.
6. Heat resistance, low temperature resistance and corrosion resistance.
 
Standards 
Manufacturing: GB/T12238-1989
Flange Dimensions:
GB/T9113.1-2000: GB/T9113.2-2000
GB/T9115.1-2000: GB/T9115.2-2000
Face to Face Dimension: GB/T12221-1989
Test Standards: GB/T13927-1992;JB/T9092-1999
 
Actuator 
Pneumatic wafer butterfly valve utilizes GT pneumatic actuator, having double-acting and single-acting (spring reset). It is drove by gear, safe and reliable. Large diameter valve utilizes AW pneumatic actuator. It has reasonable structure, large torque output, double-acting and single-acting.
1. Gear dual piston, large torque output, small volume
2. Cylinder, made of aluminum gold, has light weight and beautiful form.
3. Manual handle can be installed on the top or at the bottom.
4. Gear connection can regulate opening angle and rated flow.
5. Actuator can ba attached with electric signal indication or other attachment to realize automation.
6. ISO05211 ensures installment of product
 
Options for accessories
Accessories based on different control or requirements
Cut off accessories: single solenoid valve, double solenoid valve, limit switch echo
Regulated accessories: electric positioner, pneumatic positioner, electric converter
Air supply treatment accessories: air filtrating pressure reducing valve, air supply FRL
Manual handle: HVSD manual handle
 
Connection Dimensions (unit: mm)
Nominal diameter(DN)Dimensions Flange sizes & bolt specifications
1.0MPa1.6MPa2.5MPa
LHH1D14-Ф-MD14-Ф-MD14-Ф-M
5043350112125Ф18125Ф18125Ф18
6546370115145Ф18145Ф18145Ф18
8049380120160Ф18160Ф18160Ф18
10056420138180Ф18180Ф18190Ф23
12564460164210Ф18210Ф18220Ф27
15070555175240Ф23240Ф23250Ф27
20071605208295M20295M20310M24
25076680243350M20355M24370M27
30083800283400M20410M24430M27
35092835310460M20470M24490M30
400102915340515M24525M27550M33
450114960380565M24585M27600M33
5001271020410620M24650M30660M33
6001541225470725M27770M33770M36
7001651355550840M27840M33875M39
8001901470640950M30950M36990M45
90020315457101050M301050M361090M45
100021617957701160M331170M391210M52
120025419658901380M361390M451420M52


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