Carbon Steel Low Resistance Backflow Preventer LHS743X-16C

LHS743X low resistance backflow preventer is mainly used for city water supply and other water supply units to the general pollution units when strictly limited to the pipeline pressure water can only flow one-way hydraulic control combination device. Its function is to absolutely prevent the medium in the pipeline from backflow or siphon backflow under any working condition, so as to avoid the purpose of backflow pollution. The product has a small noise, low flow resistance, smooth and sensitive operation, easy installation and maintenance, long service life and other significant features. Widely used in various types of construction, fire, industrial and mining, hospitals, gardens, water treatment and other systems in the water supply network need to prevent backflow pollution occasions.

Product Features

• Consists of two check valves, front and rear, and an intermediate automatic drain.
• When leakage occurs in the upstream and downstream check valves, the system automatically drains water to block backflow, strictly preventing backflow contamination and safeguarding water quality in the upstream pipeline.
• Ultra-low water loss, significant energy savings: Head loss less than 0.04 MPa.
• Air Isolation, Automatic Drainage: When backflow occurs and the main valve closes, the drain valve automatically opens, reducing the intermediate chamber pressure to zero. This creates an air-tight or zero-pressure isolation between the upstream and downstream sides of the main valve, ensuring safe and reliable isolation performance.
• Space-saving and material-efficient with flexible installation: Compact design and lightweight construction, with structural length reduced to just 30% of existing comparable products; can be installed horizontally or vertically.

Product Parameters

Product Size Reference