A pressure regulator includes a housing having an inlet cap with an inlet flow passage and an outlet cap with an outlet flow passage. A plunger is reciprocally mounted in the housing. A stationary regulator valve seat is disposed between the inlet flow passage and an inlet to the plunger. A drain check shuttle is disposed in the inlet cap and positioned downstream of the regulator valve seat to prevent water from draining out of the regulator when an inlet water pressure is below a predetermined threshold.

The present disclosure provides an agricultural plant protection machine. The machine includes a frame, a liquid storage tank for storing liquid, a pipeline connected to the liquid storage tank, a nozzle, and a pump for pumping the liquid in the liquid storage tank to the nozzle. The pump includes a pump body including a liquid inlet, a liquid outlet, and a pressure relief port; a pressure relief device disposed at the pressure relief port, the pressure relief device including a valve and an elastic reset member, the valve being disposed corresponding to the pressure relief port for sealing the valve. In response to a hydraulic pressure in the pump body exceeding a preset pressure threshold, the valve is separated from the pressure relief port under the force of the liquid and the liquid flows out of the pressure relief port.

A shower head, illustratively for a sanitary shower, including a shower head housing, a fluid inlet into the shower head housing, a shower jet outlet out of the shower head housing, a fluid duct within the shower head housing from the fluid inlet to the shower jet outlet, and an overpressure valve pressure-coupled to the fluid duct, including a movable valve body which, in case of an overpressure in the fluid duct, moves from a normal position to an overpressure position. The valve body is illustratively configured to be self-retaining in the overpressure position and returnable to the normal position by user operation, and/or the valve body acts position-dependent on a passage cross-section of the fluid duct, wherein the valve body reduces the passage cross-section in the overpressure position relative to the normal position.

A system and method for calibrating an irrigation system to account for variations in flow rates, motor operating parameters, and other parameters caused by field elevation changes, pipe friction losses, water emitter nozzle wear, pressure-regulator inaccuracies, and other factors. A calibration map is created to account for the flow rate variations or other parameters and then consulted to control operation of the irrigation system.

The present disclosure concerns a paint circulating system suitable for providing paint to applicators in a product finishing facility. The system comprises: a pump for pumping paint around the system; an automatically adjustable back-pressure regulator (BPR) to reduce pressure fluctuations of paint upstream of the BPR; means for indicating a flow rate of paint through a conduit upstream of the BPR; and control means for controlling the BPR to maintain a desired flow rate based on the indicated flow rate.

A delivery device of a water jet comprises a delivery chamber and a safety valve suitable for reducing the water pressure in the delivery chamber when the water pressure exceeds a preset pressure threshold. The safety valve comprises a hollow housing body, a valve cartridge inserted tightly into the hollow housing body, the cartridge defining a valve seat for the passage of water and an obturator movable between a closed position, wherein the obturator closes said valve seat, and an open position, wherein the obturator opens said valve seat when a pressure greater than the preset pressure threshold value acts on said obturator. A support body is connected in a removable way to the hollow housing body and has a bottom wall on which the valve cartridge rests and which is penetrated by through-openings for the evacuation to the exterior of the water present in the hollow housing body.

Systems and methods for suppressing vaporization of a volatile fluid dispensed from a pressure vessel are provided. The system includes an evaporator coupled in thermal communication with a first flow of volatile fluid from the pressure vessel and in fluid communication with a second flow of volatile fluid from the pressure vessel. The evaporator includes at least one channel therein for channeling the second flow of volatile fluid therethrough. In addition, the system includes a compressor coupled in fluid communication with and downstream from the at least one channel. Moreover, the system includes a return line coupled in fluid communication with an outlet of the compressor. The compressor is configured to compress the second flow of volatile fluid and channel the compressed second flow of volatile fluid to the pressure vessel via the return line.

The disclosure relates to an applicator (RZ), in particular a rotary atomizer, for the application of a coating agent, in particular a two-component paint, comprising a first coating agent connection (SL) for feeding a first coating agent, in particular a basic resin of a two-component paint, a first coating agent strand (L1-L4), which extends in the applicator (RZ) from the first coating agent connection (SL) and carries the first coating agent, and a first valve (SLV1), which is arranged in the first coating agent strand (L1-L4) and controls the flow of the first coating agent, wherein the first valve (SLV1) can be controlled by a first control signal. It is proposed that a first pressure-relief valve (SLV1), which is actuated by its own medium, is arranged in the first coating agent strand (L1-L4) and, to avoid a problem being caused by excessive pressure, opens automatically when the pressure upstream of the first pressure-relief valve (SLV1) exceeds a certain maximum pressure.

An outlet coupling for a sealant container comprises a connector having an open first end to engage with a tire valve stem and an open second end continuous with a channel. The outlet coupling also comprises a pin at least partially located within the channel, the pin comprising a body having a head and an engaging portion at substantially opposite ends thereof. The head is in contact with a biasing member and the engaging portion is engaged with a sealing element. The pin is movable between an open position wherein the sealing element is spaced from an end of the channel and a closed position wherein the sealing element seals the end of the channel. Methods of sealing a puncture in an inflatable article, such as a pneumatic tire, with a tire repair apparatus using the outlet coupling are also disclosed.

A drive circuit for controlling a solenoid valve having a solenoid coil and a poppet that translates therein is provided. The drive circuit includes a first node, a second node, a control circuit, and a flyback circuit. The first node is configured to be energized by a power source to a first voltage. The control circuit is coupled to the first and second nodes, and is configured to: (1) selectively couple the first and second nodes in series with the solenoid coil, and periodically energize the solenoid coil using a pulse-width-modulated (PWM) signal having a frequency and a duty cycle configured to regulate a current conducted through the solenoid coil. The flyback circuit is coupled to the solenoid coil and configured to energize the second node to a second voltage with energy stored in the solenoid coil.