A membrane for a membrane valve is proposed. The membrane is produced from polytetrafluoroethylene, PTFE. An electronic data carrier is arranged between the membrane and a retaining layer.

A method for actively calculating a capability of an electronically controlled valve is provided. The method including the steps of: a) operating the electronically controlled valve in accordance with a task; b) testing the electronically controlled valve in order to determine a range of movement of the electronically controlled valve in accordance with an initial gain, wherein the testing of the electronically controlled valve occurs after the valve has been operated in accordance with the task; c) determining a new gain required for providing a predetermined range of movement of the electronically controlled valve; and d) repeating steps a-c at least once, wherein the new gain is used to operate the valve in accordance with the task.

A valve system having a valve position indicator is disclosed. The valve position indicator allows for viewing of the valve position from one or more viewing locations. In one example, the valve position indicator includes a side valve open/close indicator and a top valve open/close indicator on a valve assembly. An indicator locking mechanism securely locks the valve position indicator in alignment with a position of a control valve.

A method of automated preventive and predictive maintenance for downhole valves in a well system includes receiving, at a plurality of first times, first diagnostics data of the plurality of downhole valves, where each downhole valve is at a respective first valve position at a respective first time, and the diagnostics data represents a valve condition of each downhole valve at a respective valve position and at a respective time. The method also includes receiving, at a plurality of second times, second diagnostics data of the plurality of downhole valves, where each downhole valve has been moved from the respective first valve position at the respective first time to a respective second valve position at a respective second time. The first diagnostics data and the second diagnostics data are compared. Based on results of comparing, a valve maintenance operation is selected for each downhole valve.

A test cylinder of a valve assembly is mounted a body of the valve assembly, the body includes a holder containing an accommodation chamber, a bottom fence formed, and a cold-water inlet and a hot-water inlet which respectively communicate with a cold-water inflow pipe and a hot-water inflow pipe of the body. The accommodation chamber has a first mixing-water outlet and a second mixing-water outlet which individually communicate with a first outflow pipe and a second outflow pipe. The test cylinder includes a peripheral fence, a first orifice, an edge fence, and a first cavity defined. The peripheral fence has at least one second orifice, a second cavity, and an internal surround portion of the accommodation chamber. The edge fence has a closing portion extending from an outer wall thereof and has a conduit defined in the edge fence.

A valve system including a shuttle valve having first and second inlet channels connected respectively to first and second channels, a cavity, an outlet channel and a moveable element, the first and second inlet channels being in fluid communication with outlet channel via the cavity; wherein a moveable element is moveable within the cavity such that the position of the moveable element is determined by relative pressure levels in the first and second inlet channels, in a first position the movable element forming a seal between the moveable element and the first inlet channel, in a second position the moveable element forming a seal between the moveable element and the second inlet channel, and in a third position the moveable element being located between the first and second positions and allowing the passage of fluid from both the first and second channels.

A method for monitoring a system with mechanically movable parts, preferably a valve system, wherein the system is preferably part of a technical plant, in particular a production plant, and wherein the system has at least one mechanically movable part, in particular a valve, where the method comprises a) acquiring indicators, which can be used for a technical characterization of a movement procedure of the mechanically movable part, via technical devices configured for the acquisition of the indicators and b) transferring the acquired indicators to an evaluation unit arranged outside the system to determine a technical status of the system.

A valve diaphragm includes a flange portion and a diaphragm portion. It is proposed that it includes a data carrier contained in a housing and that the housing is arranged on an edge of the flange portion so as to be at least partially visible when seen from outside onto the edge.

An air distribution apparatus including a manifold body having ports with a delivery conduit connected to each port. A port valve is configured to communicate an interior of the manifold body with the delivery conduit associated with each port. A supply conduit is connected at an output end thereof to the interior of the manifold body and connected at an input end thereof to receive a product air stream with entrained agricultural products. An exhaust orifice is defined in the supply conduit and an exhaust valve configured to control a flow of pressurized air from an interior of the supply conduit through the exhaust orifice. The port valve and exhaust valve are controlled to operate oppositely to each other between their open and closed positions. The port and exhaust valves are also adjustable to intermediate positions between the open and closed positions.

A method for monitoring a device for regulating the flow of a gas, the device having a flow conduit and a shutter assembly that defines a restriction in the flow conduit. The method includes: causing the transit of gas through the flow conduit; defining a sequence of time intervals (Z1 . . . Zn) of corresponding durations (t1 . . . tn); during each time interval, determining a value of density and a value of velocity of the gas at the restriction; calculating the product of the value of density, of the value of velocity, of the duration of the time interval and of a correction coefficient to obtain a corresponding value of equivalent wear; for each time interval, adding all the values of equivalent wear calculated for the current time interval and for the preceding time intervals to obtain a cumulative value; comparing the cumulative values with a predefined limit value, corresponding to a condition of maximum wear allowable for the shutter assembly, to obtain an indication of the condition of efficiency of the shutter assembly.