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.
• In the event of leakage from the front and rear check valves, it is able to automatically drain the water and block backflow, strictly preventing backflow pollution and protecting the water quality in the upstream pipeline.
• Ultra-low water loss, significant energy saving: head loss is less than 0.04Mpa.
• Air isolation, automatic drainage: in the event of reflux state, when the main valve is closed, the drain automatically opens, the intermediate chamber pressure relief to zero, the main valve upstream and downstream between the realization of air isolation or zero-pressure isolation, isolation performance is safe and reliable.
• Land and material saving, flexible installation: small shape, light weight, structure length is only 30% of the existing similar products; can be installed horizontally or vertically.

Product Parameters

Product Size Reference