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Pneumatic eccentric rotary control valve
The pneumatic eccentric rotary control valve consists of a pneumatic actuator and an eccentric rotary valve component. Pneumatic actuators are divided
Product details
The pneumatic eccentric rotary control valve consists of a pneumatic actuator and an eccentric rotary valve component.
Pneumatic actuators are divided into spring reset rolling diaphragm actuators and double acting piston actuators.
The valve body of the eccentric rotary valve is equivalent to a circular tube, and an eccentric distance is designed between the center of the valve core spherical surface and the center of rotation of the valve shaft. When the valve shaft drives the valve core to rotate, the spherical surface of the valve core rotates eccentrically with the center of the valve body, and its trajectory is a cam shaped curve. When the valve is closed, the flexible arm of the valve core undergoes elastic deformation, making the spherical surface precisely fit with the valve seat, achieving reliable sealing.
Technical parameters:
|
model |
Pneumatic eccentric rotary control valve |
|
Nominal Diameter |
DN25 ~ 350 |
|
nominal pressure |
ANSI CLASS 150、300、600 |
|
operation temperature |
Hard seal:-196℃~ +400℃； Soft seal:-73℃~ +204℃ |
|
Traffic characteristics |
Approximate straight line (intrinsic flow characteristics) |
|
Leakage level |
hard sealⅣGrade, soft sealⅥlevel |
|
body material |
SCPH2 / WCB、SCS13A / CF8、SCS14A / CF8M |
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