Abstract: The pressure limiting valve has a low pressure gauge configured to measure the operability of a backflow prevention device having a line pressure relatively higher than the maximum PSI rating of the low pressure gauge. The valve body has an inlet statically coupled to a pressurized fluid source and an outlet coupled to the low pressure gauge. Upper and lower chambers fluidly coupled via a conduit are formed from an interior portion of the valve body and generally separated by a flexible diaphragm. A spring actuable via movement of the flexible diaphragm in response to pressure changes in the valve body biases a closure seat in an open position relative to the outlet when the valve body is not under pressure, and compresses under pressure to permit the closure seat to seal the outlet when pressure in the valve body reaches a maximum PSI rating of the low pressure gauge.

Abstract: A pressure isolation device for a pipeline system is described. The pressure isolation device changes from an open position to a closed position when the pressure of a fluid flowing through the device exceeds a predetermined threshold pressure. In some embodiments, the pressure isolation device comprises a housing having an internal chamber, a main inlet, and a main outlet. An elongated member is disposed within the internal chamber between the main inlet and main outlet, and is biased towards the open position. As fluid pressure increases, the elongated member is pushed to the closed position and a portion of the elongated member blocks the fluid pathway from the main inlet to the main outlet. The pressure isolation device provides a simple mechanical solution to protecting and isolating downstream pipeline components from over-pressurization.

Abstract: A filling device for a machine for filling containers, includes a spout having an outlet orifice and a feed orifice, and a feed duct connected to the feed orifice. A first actuating system is able to move a valve, which is mounted in the spout, between a closed position for closing the outlet orifice and at least one open position. A flow-regulating rod is mounted in a sliding manner in a hole in the feed duct and is able to be moved by a second actuating system between a high flow-rate position, in which the rod is located substantially outside the internal passage in the feed duct, and a low flow-rate position, in which the rod extends into the internal passage in order to reduce the passage cross section of the feed duct.

Abstract: An arrangement having at least one flow meter (1) for fluids, particularly liquids, and with at least one bypass line (2), via which fluids can be guided past the flow meter (1), with the flow meter (1) including at least one rotationally supported measuring spindle (3). The arrangement includes a housing block (4) with at least one inlet opening (5) and at least one outlet opening (6), and the flow meter (1) and the bypass line (2) are arranged inside the housing block (4), with the inlet opening (5) being connected to the outlet opening (6) in a first operating state via the flow meter (1) and in at least a second operating state via the bypass line (2.

Abstract: A humidity sensor of a heat conduction type which enables a humidity measurement to be produced by a single temperature sensing resistor so as to reduce a change in characteristic depending on a temperature change of the measurement atmosphere and to reduce the cost, comprises a temperature sensing resistor 1 and three fixed resistors R.sub.1, R.sub.2 and R.sub.3 which form a Wheatstone bridge circuit. The humidity is measured by utilizing the fact that the heat dissipation of the temperature sensing resistor 1 changes depending on the humidity. The temperature sensing resistor 1 is heated by a heat generator 2 for self-radiation of Joule heat so that the temperature of the temperature sensing resistor 1 is controlled to be at a constant temperature of 150.degree. C. or more. The output voltage value of the Wheatstone bridge circuit is corrected with reference to the variation of the output voltage value depending on the ambient temperature of the temperature sensing resistor 1.

Abstract: A flow meter having a housing with an inlet, an outlet and a cylindrical housing chamber fluidly connected in series between the inlet and the outlet. A cylindrical rotor is rotatably mounted within the housing chamber about an axis which is eccentric with respect to the axis of the housing chamber. In addition, a plurality of circumferentially spaced vanes are radially slidably mounted within the rotor. These vanes are urged radially outwardly into sealing contact with a housing wall which defines the housing chamber. A fluid working chamber is formed between each pair of vanes, the outer periphery of the rotor and the housing wall and this working chamber increases in size from the housing inlet and to the housing outlet. In operation, fluid flow into the housing inlet rotatably drives the rotor until the fluid is exhausted through the housing outlet. A detector detects the speed of rotation of the rotor thereby providing an indication of the fluid flow rate through the flow meter.