3Z
จากประเทศ Korea
Sleeved Plug Valve
Class 300
Fig 320
Basic structure is plug, sleeve, body. Sleeve is inserted and encaged inside the body. Tapered plug is inserted onto the sleeve. The sleeve is acting as a soft seat. And completely surrounds plug creating areal sealing surfaces. Also not permitting any dead space in the flow path. Plug is rotating 90 degree. When it is aligned with the body port, flow is open. When the plug is rotated so that plug port is perpendicular to the body port the flow is blocked. The mediakept in the plug while at closed position, will be contained in the plug port only, and when the valve is open again, the flow will flush the out. And no remains
