In a method of monitoring fluid usage in a fluid system, a proportional control valve is provided, including a valve element operable to control fluid flow from a fluid source to the fluid system. A first pressure upstream of the valve element and a second pressure downstream of the valve element are measured to identify a pressure differential across the valve element. In response to the identified pressure differential, the valve element is adjusted to one of a plurality of flow positions to adjust the pressure differential across the valve element to substantially match a predetermined pressure differential. A flow rate through the proportional control valve is determined based on the first pressure, the second pressure, and the adjusted flow position of the valve element. Based on the determined flow rate over time, an amount of fluid usage in the fluid system is determined.

Apparatus and methods for determining operational health of a pump. An example method may include commencing operation of a processing device to monitor operational health of a pump for pumping a fluid at a wellsite, wherein the pump may be a reciprocating pump. During pumping operations of the pump, the processing device may receive pressure measurements of the fluid at a fluid inlet manifold and/or a fluid outlet manifold of the pump, receive position measurements of fluid displacing members of the pump, detect irregular pressure measurements based on the received pressure measurements, determine operational phase of the pump based on the received position measurements, and determine which of fluid inlet and outlet valves of the pump is leaking based on operational phase during which the irregular pressure measurements are detected.

A gas leakage meter (100) for use onsite in a process plant comprises a housing (110) with an inlet (101), an outlet (102) and an inlet nozzle (111) fluidly connected to a unit to be tested (3) through a downstream connector (1040) and to the inlet (101), the housing (110) being filled with a liquid to a level (10). An inclined pipe (120) is arranged such that, in use, test gas released from the inlet nozzle (111) raises through a liquid and the inclined pipe (120) to a gas-collecting chamber (122) at an upper end of the inclined pipe. (120). The gas-collecting chamber (122) has a gas release valve (150; 170) for releasing test gas before a test period. Embodiments where the inclined pipe (120) is mounted on a pivot and alternative gas release valves (150, 170) are also disclosed.

An actuator assembly for moving a valve between an open position and a closed position includes an actuator housing forming at least a portion of a chamber. The actuator assembly also includes a support plate arranged within the actuator housing. The actuator assembly further includes a diaphragm coupled to the actuator housing and the support plate, the diaphragm expanding and contracting in response to a working fluid within the chamber. The actuator assembly also includes an indicator rod extending through the chamber and out of the actuator housing, the indicator rod being removably coupled to the support plate, wherein the indicator rod is arranged within an opening formed in the support plate, the indicator rod secured to the support plate via a coupling mechanism that releases the indicator rod in response to a pressure from the working fluid between the diaphragm and the support plate.

A method and apparatuses for testing the blowout preventer (BOP) piping system on a drilling rig for leaks. The method and apparatuses can be used in conjunction with a pressure or volumetric method to more accurately test the BOP for integrity and to shorten the total time of testing.

A diagnostic method to identify a leak in simulator valve in a vehicle brake system includes the steps of: (1) providing a simulator partially filled with a pressure medium and a de-energized simulator valve; (2) energizing a pumping valve, a secondary three-way valve, and a plurality of apply valves; (3) applying and retracting a plunger in a plunger assembly at least two cycles so that a predetermined pressure is achieved; (3) holding a plunger in position within the plunger assembly while maintaining a replenishing check valve in a closed/de-energized position and energizing the simulator valve; (4) obtaining a measured master cylinder secondary pressure decay; (5) comparing the measured master cylinder secondary pressure decay to a predetermined pressure decay value; and (7) identifying a leak in the simulator valve if the measured master cylinder secondary pressure decay does not match the predetermined master cylinder secondary pressure decay.

A method for determining a predictive life of a pressure containing component includes determining, from sensor data, one or more cycles. The method also includes generating one or more additional cycles. The method further includes determining a component feature is below a threshold. The method further includes generating one or more supplementary cycles. The method also includes determining, from the one or more cycles, the one or more additional cycles, and the one or more supplementary cycles, the component feature. The method includes determining the component feature exceeds the threshold. The method further includes determining, based at least in part on the one or more supplementary cycles, a predictive life for the pressure containing component.

Embodiments of the present disclosure belong to the field of valve sealing, and in particular, relate to a test device for simulating sealing performance of a one-way valve. A box is provided with a gas inlet pipe and a gas outlet pipe, the gas inlet pipe is communicated with a gas source, a detection device is communicated with the gas outlet pipe, the detection device is used to detect detection gas input into the box by the gas source, a sleeve is connected to the gas inlet pipe, one end of the sleeve is communicated with the gas source, the other end of the sleeve has a gas outlet, one end of a fitting piece is used to block the gas outlet, and the other end of the fitting piece is connected to a driving member, which is used to drive the fitting piece to move and rotate.

A valve arrangement (10) for industrial automation, including at least one pneumatic valve module (4) with a module housing (5), the valve module (4) having a working port (2), an electric drive device, and at least one actuator element (6) which is arranged in the module housing (5), can be positioned, in particular proportionally, by means of the electric drive device and via whose position a valve module output pressure at the working port (2) and/or a flow rate through the working port (2) can be set, wherein the valve module (4) further has a valve module pressure sensor (7) for detecting the valve module output pressure, the valve arrangement (10) further including a diagnostic device (8) which is configured to provide a diagnostic function on the basis of the detected valve module output pressure, the diagnostic function including a failure prognosis of the valve module, a compressed air leakage detection, a compressed air consumption detection and/or a compressed air consumer localization.

In order to accurately judge whether or not there is a seat leakage in the first valve and the second valve in a short period of time, a fluid control apparatus comprises a fluid resistor arranged in a flow channel, a first valve arranged upstream of the fluid resistor, a first pressure sensor that measures a pressure in a first volume between the first valve and the fluid resistor in the flow channel, a second valve arranged downstream of the fluid resistor, a second pressure sensor that measures a pressure in a second volume between the fluid resistor and the second valve, a valve controller that controls the first or second valve, and a seat leakage judging part that judges whether or not there is a seat leakage in the valve valves based on the pressure sensors in a state where the valves are fully closed.