Quick Shut Off of Water Works Valves
In the article by William W. Brush, deputy chief engineer of the department of water supply, gas and electricity of New York City, published as a leader in this week’s issue, he refers to the necessity for the quick shutting off of water works valves. One of the means of accomplishing this in New York City and several other water departments is the shut-off truck illustrated on this page. This apparatus consists of a standard chassis with a Payne Dean valve-operating take-off, the valve operating mechanism being a special transmission permanently attached to the chassis and arranged to carry square valve operating keys of different lengths. For the operation of the mechanism all three speeds, forward and reverse, are available. A Dean position indicator is attached in the zone of operation of each valve, which shows the exact number of turns the valve is open. This indicator is applied to the valve without any alterations and takes the place of the valve nut. The operating end has a standard nut to suit both truck and hand wrenches.
In front of the driver on the dashboard the automatic cutoff indicator has an illuminated dial and adjustable numbers. The latter are set to correspond with the numbers on the dial of the valve-position indicator, after which the clutch is let in through, say, the second speed of the car. The valve completely closes and the engine automatically stops.
When opening the valve the automatic cut-off operates just as efficiently. By aid of special universal joints, the vertical key shaft may be as much as 10 inches off center. An adjustable shear coupling in an accessible position is provided for protecting the valve stem. A special low-head centrifugal pump is provided under the rear end of the body, driven by the transmission and provided with a clutching and de-clutching device.
The immediate improvement of the water system of Olympia, Wash., at Fort Angeles, by the replacement of a large amount of pipe line and by dredging and repairing the main storage basin, has been ordered by the department of public works. This was decided upon after a conference with the officials of the North Pacific Service Company, which owns the system.
The city council of Salem, Ohio, in response to a request of Service Director Bristol, has authorized the mayor and auditor of the city to borrow $2,000 to defray the expenses of further development of the Zelley fields to secure an additional water supply, payment to be met from the water works funds. W ork at the Zelley fields will be started at once.