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In the 1970s a new type of automatic coupler was developed by the European railways. This was called the UIC automatic coupler and represented a West European variant of the AK69e type and the East European Intermat type. It was intended as a full replacement for the buffers and chain setup, which is not suitable for heavy loads, very time ...
The European system links to the former Soviet Russian-gauge network, where SA3 automatic couplers are used. Some research has been undertaken to choose an automatic freight coupler compatible with the Soviet one, but owing to widescale replacement cost, no action has been taken to implement the conversion, except for some trial installations.
1,1,1,2-Tetrafluoroethane (also known as norflurane (), R-134a, Klea 134a, Freon 134a, Forane 134a, Genetron 134a, Green Gas, Florasol 134a, Suva 134a, HFA-134a, or HFC-134a) is a hydrofluorocarbon (HFC) and haloalkane refrigerant with thermodynamic properties similar to R-12 (dichlorodifluoromethane) but with insignificant ozone depletion potential and a lower 100-year global warming ...
The Schwab coupler is an automatic coupler manufactured by Schwab Verkehrstechnik AG, Schaffhausen, the legal successor to the Railway Coupler Division of Georg Fischer. The coupler automatically makes the mechanical, pneumatic and electrical connections. The mechanical locks are located on either side of the pneumatic ports.
Digital automatic coupling (DAC) is a type of railway coupling developed in the 2020's to replace the English buffers and chain couplings, initially in Europe. It resembles the Scharfenberg coupler with extra contacts to join electrical circuits (power, detection and control) and air hoses.
Scharfenberg-type semi-automatic couplers on modern EMUs, DMUs and some passenger rolling stock: Dellner in General San Martín Railway and General Bartolomé Mitre Railway on 1,435 mm track gauge; Shibata semi-automatic couplers on EMUs made by Toshiba-Marubeni Corp. 1956 D.F. Sarmiento Railway on 1,676 mm track gauge,
The bent rod at far left allows the coupler to be disengaged by a worker standing safely at the side of the car, per Section 2 of the Act. The Safety Appliance Act is a United States federal law that made air brakes and automatic couplers mandatory on all trains in the United States. It was enacted on March 2, 1893, and took effect in 1900 ...
They are frequently used in air conditioning and as refrigerants; R-134a (1,1,1,2-tetrafluoroethane) is one of the most commonly used HFC refrigerants. In order to aid the recovery of the stratospheric ozone layer, HFCs were adopted to replace the more potent chlorofluorocarbons (CFCs), which were phased out from use by the Montreal Protocol ...
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