Product Details

product description:

The single-diaphragm low-resistance backflow preventer is a kind of self-developed by our company and is used in water supply units such as urban water supply. Generally, when supplying water to polluting units, it is a hydraulic control combination device that strictly limits the pressure water in the pipeline to flow in only one direction. Its function is to prevent the medium in the pipeline from flowing back or siphoning back under any working conditions, so as to avoid backflow pollution.

Features:

1. The structure is more compact, the size is short, the volume is small, the backflow is low, the noise is small, and the normal operating water loss is 1.3-2.5 meters at economical flow rate.

2. The accuracy and drainage pressure of the drain valve are adjustable, so that it is less disturbed by pipeline pressure fluctuations, opens and closes safely and reliably, and there is no abnormal drainage phenomenon.

3. The single diaphragm design and the proven reliability of key components such as the diaphragm make its quality superior to ordinary low-resistance backflow preventers.

4. The unique flow channel design of the two-stage check valve has small flow resistance and fast opening and closing speed, which can effectively prevent the sudden increase in back pressure from damaging the valve and pipeline, limit the backflow of pressure water or siphon backflow, and has a silent function, which is effective Director valve service life.

5. Humanized design, the product can be installed horizontally or vertically, online tested, and online inspected.

Technical Parameters:

1. Working pressure: 1.0Mpa, 1.6Mpa, 2.5Mpa

2. Applicable media: raw water, clean water, oil and liquids with properties close to water

3. Medium temperature: 0~ 80°C

4. Nominal diameter: 50-400mm

Main material