The selection and installation of vacuum breakers

The selection and installation of vacuum breakers, vacuum breaker selection and installation guidelines, selection and installation of a vacuum breaker vacuum breaker selection criteria vacuum breaker applies only to prevent siphoning reflux place. Atmospheric type vacuum breaker, the upstream and downstream pipeline does not apply to their settings can be shut off valve and the outlet without back pressure possible place, should use a single intake vacuum breaker. Pressure-type vacuum breakers for downstream set of pipes can be shut off valve. Should use export backstop type vacuum breaker, or a single intake vacuum breaker valve and downstream piping with the form. Top of the riser should use a single intake and exhaust vacuum breaker valve combination. Hose-type vacuum breakers for special connections downstream the siphon hose and possibly reflux and low back pressure backflow place, should be used in a vacuum breaker importing non-return-type vacuum breaker installation 1. Before installing a vacuum breaker, preliminary deal with product acceptance, preliminary acceptance by the construction and installation of the unit in charge of preliminary acceptance without vacuum breaker shall be installed and used in the project; 2. Install a vacuum breaker before the pipeline should be thoroughly washed; 3. Vacuum breaker should be installed at the highest point of the water distribution manifold, the intake port should be downward; 4. Install outdoor vacuum breaker, its inlet side Drain valve should be so in the winter emptying antifreeze; 5. vacuum breaker can not installed in a fume hood or ventilation hood shall be installed in the hazardous environment of toxic gases; 6. should vacuum breaker inlet. 7. Pressure-type vacuum breakers should be installed on the device flood level; pressure type vacuum breaker outlet should be higher than the highest flood level of 300mm or more. 8. The hose-type vacuum breaker mounting height should be set at more than 1000mm from the ground; for fixed appliance (bath or washing machine), should be higher than 150mm above the highest flood level. 9. In the cold and cold areas, when the vacuum breaker set in the non-heating room or outdoors, and so vent freezing measures should be taken. 10. The exhaust valve is provided, the vacuum breaker should be set at the lower side of the exhaust valve. 11. The surface drainage measures should be reliable vacuum breaker installation location. 12. In the interior of the vacuum breaker should be mounted, flush-mounted For special cases, should be installed in the box, the size of the box should meet the maintenance needs, and set the louver vent on the compartment door, the vent area should be larger than the vacuum breaker water supply pipe cross-sectional area of ??five times; 13. A vacuum breaker air intake below the minimum obstacle clearance distance not less than the vacuum breaker of nominal size; 14. level-through vacuum breaker in indoor installation, should be installed at the start from the riser pick out a cross-manifold; Wuhan far Ming Feng Technology Co., Ltd. is located in Hongshan District of Wuhan City, is a professional vacuum breaker manufacturer, the company invested its own this year, a mold design and to create its own brand far Ming Fung vacuum breakers, vacuum breakers comparable quality imported from Italy, brass, temperature 110 degrees, the pressure 16bar, positive pressure leak tightness when negative pressure when the time to open the seal to eliminate the vacuum suction system, each vacuum breakers are subject to stringent inspection at the factory, the only country able to provide third-party testing organizations test report issued by the company, sales of the first vacuum breaker China, good reputation, is now facing the country wholesale away Ming Fung vacuum breaker, the sale of a vacuum breaker one-year warranty, a vacuum breaker genuine, trustworthy. The selection and installation of vacuum breakers, vacuum breaker selection and installation guidelines, selection and installation of a vacuum breaker standard vacuum breaker selection and installation of a vacuum breaker selection and installation guidelines, vacuum breaker selection and installation standards