Abstract: This invention relates to a system to provide a controlled temperature mixing of two or more fluids by an immediate visual indication of necessity for particular adjustment, and achievement of a predetermined fluid blend temperature range. The device includes plumbing fixture apparatus comprising a set of manually controlled hot and cold fluid mixing valves and an integral fluid flow activated temperature sensor with electronic translation of fluid temperature imbalances between sensed blended fluid temperature and predetermined temperature values. A fluid temperature imbalance will cause illumination of a particular fluid control valve handle or handles to acknowledge and obtain corrective fluid temperature control by manually adjusting the fluid control valves until the proper fluid blend temperature range is achieved.

Abstract: An agricultural spraying assembly including a plurality of nozzles divided into groups with each group being supplied liquid through a solenoid valve with a motorized proportioning valve being adjustable to control the pressure supplied to the solenoid valves and, in turn, to the plurality of nozzles. The assembly includes a main control box which is normally situated on a spraying trailer and a remote control box which is normally situated on the pulling tractor and is supplied power from the tractor's battery. Each of the control boxes includes switches for each of the solenoid valves as well as a pressure adjusting switch for adjusting the pressure supplied to the nozzles. Each control box has a pressure gauge for indicating the operating pressure supplied to the nozzles.

Abstract: A gas venting mechanism includes a valve chamber that is at least partially filled with a liquid. At the top of the chamber, an outlet valve allows the gas to escape but retains the liquid. Air is admitted to the chamber through an inlet valve that prevents backflow of the liquid into a passage by which the gas is supplied. The chamber is transparent so that the venting of gas can be verified by observation. A piston that reduces the effective volume of the chamber facilitates testing of the chamber for leakage of the liquid. The venting mechanism can be advantageously combined with a degasser in an aircraft hydraulic system.

Abstract: A control device having a cap telescoped through a mounting opening in a control panel and being secured thereto by a nut threaded on the cap and disposed against one side of the panel and a fastener carried by the cap and disposed against the other side of the panel, the fastener comprising a substantially flat plate spanning the opening of the panel and having a bayonet opening passing therethrough and aligned with the opening of the panel and the cap having a bayonet portion extending completely through the bayonet opening and cooperating with the bayonet opening to lock the cap and plate together.

Abstract: The sillcock includes an inner tubular pipe forming a water-flow passage and an outer tubular pipe cooperating with the inner tubular pipe to form a water relief chamber. When the inner tubular pipe is ruptured as a result of the expansion of ice in the inter-flow passage, water from the source is directed across the open valve of the sillcock into the water-flow passage where it escapes into the water relief chamber through the ruptured opening. The relief chamber is opened to the atmosphere and water emerging therefrom alerts a person to the fact that the inner tubular pipe has ruptured thereby requiring repair or replacement.

Abstract: A delay circuit includes a switching element for operatively switching between a first position and a second position. The switching element connects an input voltage to an electrically-operated device in the first position. A delay element is operatively connected to the switching element for maintaining the switching element in the first position when an input voltage interruption occurs which is less than a pre-determined time interval.

Abstract: Improvements in a check valve are disclosed. The check valve contemplated is of the type used to halt fluid flow in a fluid-carrying pipe system, and comprises an annular seat adapted to be mounted in the fluid line, a head-mounting yoke, and a head carried by the yoke and adapted to slide axially into and out of fluid-sealing engagement with the seat. One improvement comprises a pair of valve sleeves extending, respectively, axially upstream and downstream of the valve seat; each valve has a mouth adapted for mating connection with adjacent fluid-carrying pipe structure. Each sleeve terminates adjacent the valve seat in a diagonal flange formation, and a clamp including a V-shaped collar fits over the sleeve flanges so as to urge the sleeves toward the valve seat and toward one another. A gasket having a U-shaped cross section provides a fluid-tight seal between the sleeves and seat.

Abstract: A traveling sprinkler radio-controlled mechanism and warning device which obtains an adequate and controlled duration of watering at opposed ends of a field to be watered while concurrently insuring that over-watering will not occur whenever an unattended traveling sprinkler stops for any reason whatever. A re-settable time delay means is employed which obviates a common deficiency of under-watering at the opposed ends of the field while also preventing over-watering which heretofore occurred whenever an unscheduled stop occurred or where no shut down of the pump was provided for at the far end of the field. Radio transmitter and receiver means are used to transmit and receive a shutoff signal for a pump supplying water to the traveling sprinkler whenever the traveling sprinkler stops.

Abstract: There is disclosed liquid flow control apparatus (particularly for use where the flow takes place in the form of drops over at least part of the flow path). A valve in the flow path is controlled by a servo system in dependence on the difference between desired and actual rate of flow signals. A linear to exponential signal converter sets the desired rate of flow signal which is displayed by means of two relatively movable display members one of which is movable to a position dependent on the desired rate of flow and carries a logarithmic scale which is juxtaposed with a logarithmic scale on the other member. For example, the other member may be movable to a position dependent on the size of the drops, and the volume rate of liquid flow for any given time can be read off from the juxtaposed scale. The apparatus also includes a throttle valve comprising two relatively movable throttling members positioned on opposite sides of a flexible tube.

Abstract: A flow meter for liquids comprising two tubes interconnected at their lower ends, one tube providing an inflow passage for liquid from a supply container and the second tube having an opening at its upper end. A thin orifice disc in sealing engagement with lower portions of the tubes has an orifice through which liquid flows, the rate of flow being governed by flow control means associated with a set incorporating the flow meter. The tubes are enclosed within a drip chamber having an outlet at its lower end. Indicia associated with the second tube mark the various flow rates. In another form of the device, a third tube adjacent the second tube and connected by their top portions with a passageway has a second orifice at its base and second indicia so that a flow meter with an extended flow rate capability is obtained. The flow meters provide greater accuracy in flow rates and the flow rates are only minimally affected by solutions of widely differing viscosities.

Abstract: A wet barrel hydrant check valve has a body containing a dash-pot assembly connected to a flapper valve, spring biased towards the closed condition. A sandwich flange fixed to the hydrant has a member holding the flapper out of the flow passageway, the flange being joined in a break-away connection to the valve body so that upon hydrant upset, as by vehicle impact, the hydrant and holding member are dismounted from the valve body, releasing the flapper into the flow path of escaping water for dash-pot controlled, gradual closure of the valve minimizing water hammer in the line.

Abstract: There is disclosed apparatus and method for determining pumping head requirements for an operating pumping system by subtracting a desired delivery head or pressure from an actual head. The difference represents overpressure, and this overpressure is subtracted from a measured pump total dynamic head to establish the pumping head requirement of the system. The pumping head requirement data is recorded together with other data indicating a measured fluid flow rate. The data so recorded is in a form for plotting a system head curve. Once the system head curve is available it is possible to modify the supply system so as to avoid pumping at a pressure in excess of that which may be required for any given flow rate condition. Such avoidance of overpressure pumping produces an energy saving in the operation of the pumping system.

Abstract: A new and improved apparatus for detecting cracks in the heat-insulating liner of a container for cold liquids, wherein a plurality of breakable or frangible electrical conductors and a barrier means having a woven mat of glass-fiber material are incorporated in the heat-insulating material and detector means is connected with the electrical conductors to detect breaks in the electrical conductors caused by cracks in the heat-insulating material attaining a critical length. The frangible electrical conductors may be frangible wires or stripes of conducting paint.

Abstract: A valve assembly for detecting leaks in a fluid system which includes an air-tight liquid chamber defined by a transparent sleeve enclosed within a removable cap having windows formed therebetween, the chamber being at least partially filled with liquid, and a plunger means provided with an orifice, including a tube means arranged to communicate between said orifice and liquid within the liquid chamber, wherein the lower end of the tube means is provided with a restraining and sealing means, whereby the upward movement is restricted thereby, and the liquid chamber is sealed during the open mode of the valve. The terminating end of the tube is formed having a beveled tip to allow ease of fluid discharge therefrom. The valve assembly is connected to the fluid line so as to allow the fluid to pass therethrough unimpeded.

Abstract: A gas distribution system wherein a plurality of control valves in gas collection lines are actuated by signals of timed duration received from a pressure controller at a control station, the signals being generated in response to changes in gas pressure in a gas distribution network. Timer controlled adjustable cam operated switches control the time duration of signals delivered from the control station to each control valve. Manually actuated switches at the control station are connected to by-pass the controller to simultaneously deliver signals to each control valve such that all of the control valves can be simultaneously actuated. A failure sensing device is a telemeter transmitter to transmit signals related to pressure in the gas distribution network which is equipped with a failure sensing device to deliver signals to the control station to cut out the controller and timer if the transmitter fails for any reason.

Abstract: Apparatus and method for indicating whether friction forces within a position modulating valve are approaching a predetermined friction value. The invention includes pressure detectors which monitor the pressure forces required by the valve actuator to move the valve plug predetermined distances toward open and seated positions. Means are provided which generate signal proportional to the difference between opening and seating actuating pressures and which is functionally related to the friction force within the valve. Means for comparing the generated signal to a predetermined reference signal, and for indicating if the generated signal exceeds the reference, are also provided.

Abstract: A pipe system connects a first supply tank to a flask for dissolving solids, connects the flask to a mixing tank, connects the first supply tank to the flask and to the mixing tank, connects a second supply tank to the mixing tank and connects the mixing tank to an outlet. Valves in the pipe system selectively control the connection of the first supply tank to the flask and to the mixing tank and of the mixing tank to the flask and to the first supply tank. Pumps in the pipe system pump liquids through the pipe system.

Abstract: A system for injecting a predetermined amount of additive fluid into a main stream of fluid which controls the amount of additive injected by a timing circuit. A pump continuously circulates the additive through a circuitous path having a valve which diverts the additive into the main stream. A control system receives signals from a turbine meter in the main stream and opens the valve a predetermined length of time at a frequency depending on the signals received from the turbine meter, thereby maintaining a constant concentration of the additive in the main stream.

Abstract: A spent fuel assembly handling tube closure valve is provided which assures minimal or zero leakage of trapped liquid metal coolant from the handling tube. One sealing surface of the closure valve is spherical while the other is conical. The spherical-conical combination enables an adequate seal even when the valve cap is misaligned. A further safeguard against leakage is made possible by a sacrificial inert gas system utilizing the diving bell principle. A metered gas supply system supplies additional sacrificial gas should a leak develop. A high-low level mutual inductance probe operates as a leak detector allowing the timely addition of greater quantities of sacrificial gas.

Abstract: An apparatus for detecting the presence in a liquid of material that emits fluorescent radiation when stimulated by ultraviolet radiation. A chamber having an inlet and an outlet for passing a stream of liquid therethrough. A source of ultraviolet radiation associated with said chamber with means for energizing same whereby said radiation may pass to said stream and a receiver arranged to receive fluorescent radiation emitted by such a stream.

Abstract: A valve having means for measuring leakage through the valve. The valve body has a small heater in the leakage flow path downstream of the upstream seal and a heat sensor upstream of the downstream seal in the leakage path; fluid that leaks past the upstream seal is heated and its presence detected by the heat sensor which then indicates the fact that the valve is leaking.

Abstract: A valve assembly for detecting leaks in fluid systems which includes an airtight transparent cup means at least partially filled with liquid and a plunger means provided with an orifice and a tube means interconnecting said orifice and liquid. The valve assembly is connected into the fluid line so as to allow the fluid to pass therethrough unimpeded. Depression of the plunger effectively closes the fluid line except for the passageway afforded by the orifice and the tube positioned in the liquid. The existence of a leak in the fluid system is thereby easily observed by a fluid flow through the liquid, i.e., bubbles, etc.