Abstract: A system for monitoring and obtaining readings of parameters of a flowable medium within a system of conduits. At least one primary flow element is located at a predetermined position in a conduit system, wherein at least one primary flow element provides an interface for obtaining at least one flow parameter of a flowable medium within the conduit system. At least one signal processing and data transfer unit is comprised of a sensor operatively connected to the at least one primary flow element for converting readings from the at least one primary flow element to an analog electrical signal. It also includes an analog to digital converter receptively connected to the sensor for converting the analog signal received from the sensor to a digital signal. A transmission unit is connected to the analog to digital converter for transmitting the digital signal upon activation of a data transfer surface of the transmission unit.

Abstract: A valve position adjustable lock mechanism is secured to the handle which is connected to the stem of a valve element to control the position of the valve element and accordingly the size of the opening of the valve element. An indicator ring is secured to the handle and is provided with position indicias thereon to indicate the position of the valve element from a fully open to a fully closed position. An arresting projection arrests the handle at the fully open and fully closed positions. A stopper ring is disposed over the indicator ring and displaceable for engagement and disengagement therewith. The stopper ring has an abutment flange for abutment with a fixed stop element secured to the valve body. The stopper ring has an alignment window to position the abutment means at a desired location selected by the position of the alignment window relative to the position indicias on the indicator ring.