New Meter Test Valve
A newly invented meter test valve is so designed that it will make it possible to make inexpensive periodical tests of all meters in service without interfering with their pipe connections or interrupting service to patrons except for the moment of making test. These periodical tests will result in the detection of a great many “slow” meters due to friction caused by sediment deposits by excessive wear or other causes. In such cases the percentage of slowness can be noted and the actual quantity used determined, charged for and the meter corrected, thus saving thousands of dollars annually to water companies who would not think of digging up and testing all meters the old way on account of the expense and interruption of services involved.
When a consumer complains of excessive charges and blames the meter, as is almost always the case, it is just a matter of a few minutes time and no other expense to thoroughly test the meter, right where it is, in his or her presence. In case the meter reader is doubtful as to whether a meter is running or stopped he can determine this instantly. If a patron complains of low pressure flow it can be determined instantly whether the obstruction is in the meter or in the patron’s pipes. When house is vacated the valve being closed will act as a superior and dependable housedrain.
If necessary to repair or remove a meter this valve will act as a stop cock on the house side and no water from house pipes or tanks can annoy or hinder the workman.
Referring to the illustrations, Fig. 1 is view, showing the position of the valve with relation to the meter; Fig. 2 is a sectional view taken through the valve and its casing showing the normal position of the valve; Fig. 3 is a similar view, showing the position of the valve when the meter is being tested, and the association of the auxiliary meter with the valve casing; Fig. 4 is a detail view of the valve casing; Fig. 5 is a detail view of the valve.
The valve is comparatively simple in its construction, as will be seen by reference to the various figures. In these, 10 indicates the water supply pipe and 11 the service pipe. Interposed between the ends of these pipes is a water meter 12; heretofore it has been necessary to remove this meter from the pipes, when it was desired to test the meter, but in accordance with the valve forming the present invention, the removal of this meter is not necessary.
The valve includes a casing 13, which is set between the meter 12 and the adjacent end of the service pipe being coupled to these parts, while the body of the valve casing accommodates a rotary plug 14, having an opening 15 communicating with the main bore 16 and arranged between the ends of bore. This valve casing is provided with an offset hollow boss 17, which opens into the body of the valve casing and the communication between these parts is controlled by the valve 14. The boss 17 is threaded. When it is desired to lest the meter, it is only necessary to connect a pipe 18 with the hollow boss 17, the pipe rising from the meter and supporting an auxiliary meter 19 similar in construction to the meter 12. The valve 14 is then given a quarter turn to close the communication between the main pipe 10 and the service pipe 11, but establishing communication between the main pipe 10 and the hollow boss 17. The water then rises in the pipe 18 into the auxiliary meter for testing purposes. For preventing stoppage, it is only necessary to turn the valve the necessary one-fourth revolution without associating the pipe 18 with the hollow boss, and when testing for quantity of How. it is only necessary to insert the pipe 18 in the hollow boss eliminating the use of the auxiliary meter.
(Continued on page 228)
(Continued from page 208)
The valve is the invention of John D. Smith, superintendent of water works, Cheraw, S. C., and the patent number is 1,456,942.