Pressure vacuum breaker

Pressure-type vacuum breakers, pressure vacuum breaker manufacturers, price pressure vacuum breakers, pressure vacuum breaker characteristics - Wuhan far Ming Fung pressure vacuum breaker is a loss of pressure in the water supply pipeline to a certain set When first given pressure shut-off, when introduced into the atmosphere to create a vacuum siphon backflow preventing subsequent vacuum breaker for continuous pressure conditions of the vacuum breaker, the main form is divided into single - inlet and outlet non-return type. Pressure-type vacuum breakers set features: 1. Set off valve or control valve to control the downstream water apparatus operating in the downstream pipe of a vacuum breaker. 2. Stop the water downstream water appliances, vacuum breaker by pressure upstream. 3. When the water supply is not allowed access, should be connected between the vacuum breaker valve repair piping should be set. 4. Freeze possible, set at the bottom of the drain valve and connecting pipe surface drainage facilities. 5. The vacuum breaker qi flow should be greater than the upstream pipeline 3m / s flow velocity when. Far Ming Fung vacuum breakers are widely used in a variety of easy to produce vacuum systems, such as fire, swimming pools, green spray irrigation, drainage, docks, power plants, metallurgy, shipbuilding and other fields, while the system is the timeliness of the intake air negative pressure protection system when the pipe or vessel because the system is running or stopped while a negative pressure or vacuum gradually increased, a vacuum breaker can automatically open, breaking the vacuum effect, so that piping and other equipment not to produce flat, concave crack and other phenomena, in order to protect equipment safety. Far Ming Fung vacuum breakers can also be used for steam heat transfer equipment protection, stop steam, due to steam condensation inside the device, in the device to form a vacuum, could easily lead to damage to equipment and systems in certain elements within the device reaches a vacuum When the value of the vacuum breakers automatically open, introducing air or other fluid, eliminate vacuum device, equipment or system thus play a protective role, when the device is working properly, it is sealed tight to prevent leakage of the working medium. Far Ming Fung vacuum breaker in drinking water pipes used to automatically eliminate the degree of vacuum inside the tubes, the water shut-off to prevent possible siphoning reflux threatening drinking water safety system. Technical parameters far Ming Fung vacuum breaker: Maximum operating pressure: 16bar Minimum sealing pressure: 0.2bar Working Temperature: 0-110 ℃ Working medium: water or a mixture of water and ethylene glycol Port size: 1/2 "standard thread : ISO228 / 1 vacuum breaker quality: Wuhan far Ming Fung on 2014.5.29 to a third party quality inspection agency Wuhan Product Quality Supervision, Inspection and submission Our production of vacuum breaker, after a detailed and comprehensive testing, test results in 2014.6 .6 released, our inspection of the vacuum breakers are all qualified, our customers can be assured, a move to break the vacuum breakers Chinese products have no third-party quality inspection agency certification precedent, at present, Wuhan far Ming Fung is a vacuum breaker the industry's first certified company, even if some imported vacuum breaker has not been a third-party quality inspection, you parents eyes wide open, do not choose expensive not only the election of the vacuum breaker Price: with respect to more than 200 a only importing vacuum breaker, Wuhan far Ming Fung vacuum breaker price is much cheaper than the same size and type of imported vacuum breaker, DN15 far Ming Fung vacuum breakers, into the wholesale price and the general price of the two prices, general 50 The following press a retail price of 150 yuan to trade more than 100 operators wholesale prices, according to a sell 130, 50-100 only a price of 140, far more needs to be reminded that the vacuum breaker Ming Fung prices do not tax and shipping.