Abstract: In order to open a valve member during the breakage of a temperature control element and to prevent the couterflow of fluid from an outlet side to an inlet side even when pressure at the outlet side becomes higher than that at the inlet side, there is provided a thermally-actuated steam trap comprising: a valve casing having an inlet, a valve chest and an outlet, a valve seat member having a discharge passage between the valve chest and the outlet, a temperature control element disposed in the valve chest and including a cover member, a first diaphragm, a second diaphramg and a valve member and containing expansible medium, and a through hole formed respectively on the second diagragm and the valve member attached thereto, through which a face of the first diaphragm being not in contact with the expansible medium communicates with the discharge passage.

Abstract: The present invention is a trap selector for selecting an optimum trap meeting various uses which is designed to sequentially input required data for selecting the trap and to execute previously memorized trap-selecting programs by a microcomputer characterized in that the geometrical conditions of various kinds of traps are previously memorized, the thermodynamical working conditions such as pressure thereof are inputted, when an optimum trap must be selected, so as to calculate the discharging flow rate (capacity), which is compared to the actually required discharging flow rate.

Abstract: In order to open a valve member during the breakage of a temperature control element and to prevent the counterflow of fluid from an outlet side to an inlet side even when pressure at the outlet side becomes higher than that at the inlet side, there is provided a thermally-actuated steam trap comprising: a valve casing having an inlet, a valve chest and an outlet, a valve seat member having a discharge passage between the valve chest and the outlet, a temperature control element disposed in the valve chest and including a cover member, a first diaphragm, a second diaphragm and a valve member and containing expansible medium, and a through hole formed respectively on the second diaphragm and the valve member attached thereto, through which a face of the first diaphragm being not in contact with the expansible medium communicates with the discharge passage.

Abstract: This invention relates to a free float steam trap which comprises a trap casing having an inlet port and an outlet port and a valve chest formed therein, a valve seat member attached to the lower portion of the valve chest and having a valve orifice opened through which the valve chest communicates with the outlet port, a float valve arranged in a free state in the valve chest, rising and descending in accordance with the water level in the valve chest to directly open and close the valve orifice and a means for dispersing and passing condensate flow downward, provided at a fluid inlet through which the inlet port communicates with valve chest.

Abstract: In a reducing valve assembly having a fluid inlet port and a fluid outlet port with a main valve for controlling flow between the inlet and outlet port, the main valve includes a main valve member which is actuated by an operating piston including a piston rod. In order to improve the flow characteristics of the assembly, a movable wall of the piston which transmits displacement through the piston rod to the valve member is connected with the piston rod by shaping the wall extending therebetween with a spherically curved configuration outwardly in a diametral direction from the piston rod.

Abstract: A steam trap operation detector provided with a vibration detecting section and a arithmetric section. The detecting section includes a probe, a diaphragm for generating ultrasonic vibration in response to mechanical vibrations sensed by the probe and a vibration sensor for converting the ultrasonic vibration into an electrical signal. The detector also includes an arthimetric section for receiving an amplified signal from the vibration sensor and processing the same into information indicative of the operation of the steam trap.

Abstract: An instrument to measure leakage of steam which determines the operation status of a steam trap, e.g., if the steam is leaking or not, and measures the leakage rate of the steam and is devised to prevent rippling on the water surface at the primary side of a bulkhead in the instrument installed between the steam supply side and the steam trap so as to measure the quantity of steam leakage from the water level at the primary side of the bulkhead and the gas quantity passing through a passage formed in the bulkhead.

Abstract: In a condensate separating and discharging device including a separator section formed by the inner wall surface of a casing and a cylindrical member, and a trap section provided below the cylindrical member in the casing, the trap section including a condensate discharging valve having a float, and a float cover for covering the float, an improvement is provided in that distance A between a lower end of the cylindrical member and the top of the float cover and an inner diameter B of the inner wall of the body at the trap section are set in such a manner that A/B is not less than 0.4, and in that the inner wall of the casing just below the cylindrical member is formed with a downwardly widening taper of about 2.degree..

Abstract: In a reducing valve assembly including a vapor-liquid separator, a valve casing, having therein a valve mechanism defining a valve orifice and defining inlet and outlet openings having the reducing valve mechanism interposed therebetween, is arranged with the valve casing extended below the reducing valve to define a sump chamber, the extended portion of the casing extending from a part thereof which surrounds the valve orifice. An annular partition is provided at the upper part of the sump chamber to form an annular space between the partition and the extended portion of the valve casing, the annular space being arranged to communicate with the inlet opening from above and with the sump chamber from below.

Abstract: A piston structure of a pressure reducing valve in which a piston is formed on its side surface with an annular groove for receiving a piston ring therein and is slidably inserted into a cylinder together with the piston ring, and a main valve is operatively opened and closed by regulating the operating pressure of the piston through a pilot valve for operatively detecting a secondary pressure, the outer peripheral edge of an upper surface of the piston is formed in outer peripheral direction, to be lower than a circle on the upper surface that is axially aligned with the bottom surface of the annular groove or a circle located more inwardly thereof, to prevent the upper corner of the piston from collision with an inner wall of the cylinder, when the piston is inclined by fluid jetted from the main valve.

Abstract: A self-regulating pressure control valve, such as, for example, a self-regulated pressure reducing valve, including as the principal components, a pressure control valve, a pressure regulating unit, a driving unit for driving the pressure regulating unit, a control unit for controlling the operation of the driving unit, and a pressure setting unit for establishing a set pressure. The pressure regulating position of the pressure regulating element of the pressure regulating unit is regulated on the basis of the predetermined functional relationship between the pressure regulating position of the pressure regulating element and the controlled pressure so that the pressure regulating element is positioned properly to regulate the controlled pressure to the set pressure. The self-regulated pressure control valve is capable of controlling the controlled pressure at a high response speed.

Abstract: A device for monitoring the operation of steam traps, wherein data representing the operation of the steam traps are transmitted to a host computer for storing the data, the host computer operating to record and display a summation of leakage in a plurality of steam traps as well as the totalization and analysis of leakage in terms of monetary cost or a rejection rate and changes in the steam traps with time in order to predict time required for repair or replacement of the steam traps.

Abstract: A meter for integrating the operating time of a steam trap including an integrating instrument consisting of a transparent vessel containing an electrolyte between two columns of mercury across which a DC voltage may be applied and a thermocouple including a hot junction and a cold junction connected to said instrument, wherein temperatures sensed by the hot junction causes displacement of the mercury and movement of the electrolyte in order to provide an indication of changes in temperature in a steam trap assembly.

Abstract: A disk type steam trap having a valve disk adapted to engage a valve seat with a double-coiled bimetallic member being provided operatively interposed between the valve disk and the valve seat on one side of the valve seat to lift and lower the valve disc relative to the valve seat in response to temperature change. The bimetallic member comprises a double-coiled body expanding at lower temperatures and contracting at higher temperatures.

Abstract: A steam leakage measuring device particularly for use in a steam trap having a detector member which includes a vibration sensor and a temperature sensor which are connected separately to a signal processing or arithmetic unit receiving and processing the temperature and vibration signals from the detector member. The temperature sensed by the temperature sensor is converted into a saturated pressure measurement and a true steam leakage measurement is developed in the signal processing unit based upon a predetermined relationship between the sensed vibration level and a leakage measurement for a particular developed pressure level.

Abstract: A gas-water separator provided with a cylindrical partition wall member disposed in an upper portion within a casing of the separator to form an annular space between the partition wall member and the casing, with rotary vanes being disposed in the annular space and with upper and lower portions of the annular space and an inside bore of the partition wall member being connected to an inlet side, a drain valve portion and an outlet side, respectively, of the separator. The separator is provided with obliquely, downwardly inclined walls and spiral walls, each projecting outwardly gradually from an upper end of each of the inclined walls toward a lower end thereof and connected in a stepped configuration to a radial end wall at the lower end of the inclined wall.

Abstract: A flow meter for measuring the flow rate of a liquid, capable of detecting the liquid level in the upstream space with respect to a weir and determining the flow rate of the liquid on the basis of the relationship between the liquid level and the flow rate of the liquid that flows through the weir, wherein the width of the weir is designed so that the ratio of the variation of the flow rate caused by a fixed variation in the liquid level to the total flow rate at the existing liquid level is constant regardless of the liquid level.

Abstract: A float valve assembly capable of operating as a steam trap for discharge of fluid from a system wherein a float operates to open and close an orifice located in a valve seat, the valve assembly being adapted to be easily converted for use in either horizontal flow lines or vertical flow lines by altering the relative position of internal components of the system.

Abstract: A steam trap including a buoyant float member is equipped with a valve seat assembly which is closed by abutment of the float with a valve seat portion surrounding the flow orifice. The assembly is formed with a float abutment member made of carbide located adjacent the valve seat surface on the outer periphery thereof and located to serve as a contact point for the float member and to define a fulcrum about which the float may pivot when moving into and out of contact with the valve seat surface. The material of the float abutment member ensures a longer service life and a more secure closure of the flow orifice.