Pneumatic Hard Seal Butterfly Valve
Model No.: D673H Hits: 1279
Key Specifications / Features
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.
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.
Face to Face Dimension: GB/T12221-1989
Test Standards: GB/T13927-1992；JB/T9092-1999
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|
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