Yichang vacuum breaker

Yichang vacuum breaker price action Yichang Yichang vacuum breaker vacuum breaker supplier vacuum breaker types: vacuum breaker is an automatically eliminate water pipes vacuum, effectively preventing siphon backflow device, built according to standard CJ / T 324 -2010 type vacuum breaker into the atmosphere type, pressure type and hose type. Atmospheric type vacuum breaker English atmospheric vacuum breaker, a vacuum breaker may be introduced at atmospheric pressure less than atmospheric pressure to the inner pipe. When the water barrier and the atmosphere of the vacuum breaker, mainly in the form of a single intake type; atmospheric type vacuum breaker of local head loss should 0.02MPa, the local head pressure vacuum breaker loss should be 0.035 ~ 0.045MPa. Atmospheric type vacuum breaker set features: 1. On the downstream piping is no vacuum breaker off valves and control valves. 2. Pre-control valve to control the work of water downstream appliances. 3. Stop the water downstream water appliances, vacuum breakers are not under pressure. 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. Pressure-type vacuum breakers a loss of pressure in the water supply pipeline to a certain set pressure first stop, followed after introducing a vacuum atmosphere to prevent backflow siphon vacuum breaker suitable 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 vacuum breaker standards when CJ / T 324-2010 CECS274-2010 vacuum breaker set 1) from within the district or building drinking water When the pipe directly connected to the following pipes, vacuum breaker should be set on the water pipes. a. When the air gap swimming pool, amusement pools, water features pool, circulating cooling water collection ponds and other water-filled or water pipe outlet and overflow water level is less than 2.5 times the diameter of the outlet, in which the charge (s) water pipes on; b do not contain chemicals green sprinkler system, when the nozzle is underground or automatic lift, at the borders of its water pipes;. c Fire (hose) reel;.. d flushing water outlet hose junction mouth with water pipes. 2) in the water supply riser to the top to be provided and the exhaust valve vacuum breaker atmospheric type vacuum breaker installation requirements: 1. atmospheric type vacuum breaker above the lower edge of the air intake pipe downstream of the outlet of the vertical distance of not less than 150mm, 2 tube top type vacuum breaker from the lower edge of the air intake of water, water storage facilities, structures the flood level of not less than 150mm; 3. In the top of the riser as provided with when the exhaust valve, tube top type vacuum breaker should mounted on the lower end of the exhaust valve, there is the choice of exhaust vacuum breaker; hose-type vacuum breaker installation requirements: 1. Sprinklers bolt, indoor floor washing spout mounting height 1m, its connections should be provided with appropriate hose connection; 2. Connect commercial washing machine, dishwasher or other equipment when, should be more than 150mm above the highest water level device, the interface shall be provided with a metal hose interface; 3. Connect washing shower should have a hose fittings ; 4. In addition to the hydrant and a vacuum breaker unitized combination faucets, the former hose type vacuum breaker valve should; after vacuum breaker commissioning and acceptance 1. The vacuum breaker is installed, before formally delivered shall site commissioning and acceptance, can be used together according to the current << Building Water and Quality Acceptance >> GB50242 requirements of heating and water supply system construction carried pipeline; 2. vacuum breaker site commissioning, after installation is complete, with normal conditions through the water, based on the following steps: 2.1 system pressure test, according to the current << Building Water and Heating Engineering Construction Quality Acceptance >> GB50242 requirements, debugging should turn off the vacuum breaker valve outlet end, For water pipeline does not have a closed vacuum breaker valve should close its inlet valve; vacuum breaker functions 2.2 Debugging: 1. For Official Road is not set to close the outlet valve of the vacuum breaker (such as atmospheric type or hose type) should open the inlet valve through water (hose-type vacuum breakers to the outlet pipe should have set shorter than 1m of hose and hose outlet below the vacuum breaker 150mm), through the water time should be more than 3min, during inspection vacuum breaker intake valve closing seal, should not leak, and then close the inlet valve, vacuum breaker intake valve should be opened, air enters the vacuum breaker outlet conduit, and the tube should be left in the original water outlet quickly discharged ; 2. For setting the valve on the export pipeline pressure type vacuum breaker, its first open the valve inlet and outlet pipes through the water, water time should be more than 3min, check the vacuum breaker intake valve closing seal, should watertight, Then close the supply line valves, check vacuum breaker downstream section of the pipeline should not be water; debugging, according to the first two functions 3. With the vacuum breaking combination faucets were other functions combination faucets can Under the existing requirements of relevant standards for debugging; 4. vacuum breaker should focus on examination and acceptance of the project the following: 4.1 Quality inspection documents, product performance should be consistent with the relevant standards; 4.2 Check product model, specification and installation. manner, shall meet the design requirements; 4.3 debug and site inspection record inspection product, if necessary, conduct field sampling; 4.4 checking sealing products, there should be no leaking; 4.5. Check the product manual vacuum breaker and Content is complete, should meet maintenance and repair requirements. vacuum breaker maintenance and repair vacuum breaker should be put into use 1. Installation method instructions provided maintenance and repair, maintenance work is responsible for the property sector, and should be qualified professionals trained to maintain and repair, water management department should conduct supervision and inspection; 2. Regular inspections vacuum breaker inlet valve port should not have water leakage at least once a month; 3. Each pipe water supply After vacuum breaker should be checked in connection with the intake valve seal; vacuum breakers role: 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, When the time for drainage, docks, power plants, metallurgy, shipbuilding and other fields, the timely formation of negative pressure in the system intake air protection system, in the pipe or vessel because the system is running or stopped while a negative pressure or vacuum gradually increased, the 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 the safety of equipment. 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. In simple terms, a vacuum breaker in the system is equivalent to a negative pressure valve, the protection system is very important, therefore, can not just cancel a vacuum breaker on the system, it can not reduce the number of systems in vacuum breaker. Yichang vacuum breaker price action Yichang Yichang vacuum breaker vacuum breaker supplier