ENGBERG ELECTRO-HYDRAULIC VALVES.
The Engberg electro-hydraulic valve, manufactured at the Engberg Electric and Machnical works, St. Joseph, Mich., is an up-to-date device by which gate-valves may be so controlled—all by hand—as to shut off standpipes or open reservoirs expeditiously and without any trouble arising from complicated operations. It needs no motor or generator to operate it; it has no spindles or nuts to wear out. It is operated by an hydraulic cylinder, supplied by water from the main, having connections from both sides of the main valve, which will always supply water to the hydraulic cylinders from the high-pressure side. If this valve is fixed at the standpipe or resservoir, it could be operated from the pumping Station, direct pressure would be immediately available and, by closing the proper valves, the requisite fire pressure would be supplied without delay. In the same way. if pipe lines burst and empty the whole reservoir, threatening effects destructive to life and property, instead of the employes losing time in searching round for the proper valves to close, with such a valve close at hand, as soon as the engineer at the waterworks is notified of the accident, closing follows immediately and the evil effects are thereby avoided. As, also, the standpipe is not depended upon for fire protection, with such a valve in use, the water need not be pumped to the great height at which some standpipes are erected; and thus one sixtyfeet high, with an Engberg electro-hydraulic valve at the base, capable of being operated at any moment from the pumping station would often more cheaply and effectually serve the purpose of one 140 feet high.