When installing water meters, ensuring safety, convenience, and accuracy is crucial. These factors not only guarantee secure and precise water measurement for users but also enhance the efficiency and quality of water resource management. This article will explore the standards and best practices for water meter installation, providing insights on how to properly install and maintain water meters for effective and reliable water management.
1. Safety
- Before installing a water meter on a newly laid pipeline, the sundries in the pipeline must be cleaned before installation, so as not to damage the water meter, or affect the normal operation after the water is passed through.
- When the water meter is installed, it must be considered that the water pressure and water temperature used on site are within the maximum operating pressure and maximum operating temperature of the water meter. When installing a small-caliber civil water meter, you should also pay attention to whether the connecting pipe and pipe nut of the water meter feel particularly thin, to avoid installing fake and inferior water meters.
- Water meters installed outdoors should generally be equipped with protective boxes, and should not be installed in places exposed to the sun and frozen to prevent external damage. In the severe winter season, the water meter installed outdoors should have antifreeze measures.
- Anti-theft should be considered, especially for water meters with copper casings.
2. Convenience
The location where the water meter is installed should be as convenient as possible for reading and reading the meter, and the convenience of maintenance and meter replacement should also be considered.
- For water meters installed outdoors, choosing a location that is dry, anti-sediment, anti-groundwater immersion, and anti-insect entry is necessary.
- When the water meter is installed underground, to facilitate the replacement of the water meter, two stop valves must be installed at both ends of the water meter. The water passage area of the telescopic device (telescopic tube, water filter tank, water filter net) installed at the front end of the water meter inlet should be 1 to 2 times the diameter of the water meter section, so as to facilitate frequent inspection, replacement, or cleaning.
3. Accuracy
The installation of the water meter must meet the requirements of its working method, and it should meet the requirements for the use of the water meter in terms of installation orientation, dial orientation, and upstream and downstream straight pipe sections.
- Most water meters have installation method requirements. The h on the dial or nameplate means horizontal installation, v means vertical installation, and without these two symbols, it can be installed in any direction. The dial of the water meter should be upward and not inclined. The flow direction of the water meter should be consistent with the flow direction of the water in the pipeline. Some water meters (such as volumetric water meters, etc.) can be installed in any direction.
- The water meter should be installed so that the direction of the arrow on the case is consistent with the flow of water in the pipe, and installed coaxially with the pipe.
- The dial of the water meter installed horizontally is generally upward and must not be inclined. The orientation of the indicator dial of the reading water meter cannot be adjusted only in consideration of the convenience of reading. Note: Some dry water meter fishing reading indicators can be rotated 360' for easy reading. When the water meter is installed vertically or inclined, the impeller shaft must be kept parallel to the centerline of the pipe.
- The straight pipe sections upstream and downstream of the water meter must meet the requirements of the instruction manual, and this point should be paid attention to the speed of the water meter. Horizontal screw-wing water meters and single-jet water meters have special requirements for straight pipe sections. The downstream of the water meter should have a part higher than the water meter (such as a faucet) or maintain a certain pressure so that the water meter can always operate under the condition of a pipeline full of water.
- There should be any pipeline position downstream of the water meter higher than that of the water meter to ensure that the water meter works under the condition of full pipe flow.