Patent ID: 8959927
Filing Date: 2015-02-24
Classification: B64D,F16K,G05D,Y10T

Abstract:
1. A pneumatically actuated valve comprising: a valve body comprising: a pneumatic actuator for rotating the valve disc in the valve housing; and a pitot tube connected to the pneumatic actuator and having a tip extending into the flow passage of the valve housing upstream of the valve disc, wherein the tip has an inlet orifice angled toward a downstream flow direction and is spaced apart from the valve housing by at least 1/20 of the flow passage diameter, and wherein the pitot tube has a body bent away from the valve disc so that the tip is radially offset from the valve disc when the valve disc is in an open position, and is configured so that the tip is substantially free of downstream obstructions for a distance equal to at least ½ of the flow passage diameter when the valve disc is in the open position.