Operation
1 to avoid retention dirt, debris into the vacuum valve protection system. Decompression system pipe network new or renovation projects, it is likely the remaining sand, flax, sundries. Before operation, the general should be rinsed with water, to meet the requirements of clean, finally mounted on the pressure reducingvalve and filter, so as to avoid the debris into the valve, stop valve card core. In the system into the work, ensure the smooth water flowvacuum system or not, has close relationship with set filters on the system capacity, such as the adsorption filter is serious debris, it will affect the valve work, this must be regular inspection of the filter,the timely removal of contamination. Practice shows that this work must be 2 to 3 months once, some adjustable (spring type, film type) valve, the main valve or valve itself set the filter, also need regular cleaning filter.
2.1 prepared with 1 regular rotation of the valve group should work.Most high-rise building water supply valve vacuum system, is the water supply vertical partition set, generally located in each district mains water supply. Considering the water safety of many users(residential each partition has dozens of hundreds of families,public buildings such as hotels, restaurants, each partition hasdozens of rooms...... Design), the valve should be two sets of parallel installation (1 with 1 for preparation). Decompression pathon both sides with gate valve or butterfly valve, which can open and close any relief channel, for the juxtaposition of two sets of valve channel can work, regular exchange of one month rotation, hold time decompression channel scaling stagnant water, vacuum components will be stuck valve failure.
3 should be immediately removed the product gas pipeline. When the air into the vacuum pipe or pipe network changes with the pressure inside the gas separated from water, when the water pressure within the region the user is very unstable; most negative point in a water supply device is the rapid pressure changes, there isPresenting false peak pressure, sometimes pumping water, and pipe network with impact sound. Produce this phenomenon, will affect the gas water heaters, electric water heater, stable work, will be seriously damaged; the various toilet appliance inlet connectingpipe damage is also great, so the tube explosion incidents have occurred; some water can not be measured correctly, there is not water users, water will continue to rotate. To prevent this kind of accident, should check the roof water tank water level life of water mains are fulfilled, such as outlet does not meet the water tank will produce a rotating water, inhalation of air. The lowest water leveleliminate this failure to adjust the water tank liquid level controllerelevation, experience shows that generally the lowest level from the outlet should be not less than 0.3m. Open the settings can also be repeated in the pressure gauge bleed plug partitions,decompression system on both sides, to have entered the network of air slowly discharge. If these measures are taken, also appeared in some partition duct endings following the water heater of the phenomenon, can be equipped with automatic exhaust device at these sites.
4 note that the decompression valve protection system. No matter choose or adjustable proportional valve, the decompression ratio P1 ∶ P2 shoulds not be too big, the general should be controlled at 5 ∶ 1. Exceed this range is easy to produce cavitation phenomenon,damaged valves, squeak noise. Some piston valve, the valve on its processing factory in a hole of about 1.5mm in diameter, and its function is to let the spool to play through the suction effect,maintenance and management should pay attention do not plug the holes to live, or affect the normal operation of valve.
5 to strengthen the management of valve protection system inspections, to observe the work of reducing valve itself is dynamic.Close valve before the valve after the pressure value,, indicating that the valve itself is defective. The plane piston valve spool and the body of the rubber seal damage; film type adjustable pressure reducing valve and main valve diaphragm damage cracks and O ring, and the pilot valve connecting pipe blockage, resulting in vacuum valve action is weakened or failure. The partition network harm is great, especially many water equipment may be due to overpressure and blast pipe, must be timely repair. Proportional(piston type) valve body through the suction holes such as the leak of more than, show spool gear O type sealing ring is worn, to replace the seal. But in repair disassembly decompression element,be careful, change the seals; clean up debris, should be in the light of its general trend, with a metal rod, valve stem pry not hard.
The activities of parts, the use of wood and wood handle hammer percussion vibration, slowly remove the valve internals. After re installation repair, and valves must be consistent with the flow of instructions.
6 pay attention to check the proportional valve installation position.Design and installation position is wrong senior internal relief valve,there will be pressure reducing valve after the pressure fluctuated,pipe network pressure deviation from the allowable range, with the destruction of shower, the user water pipe burst and damage and other accidents; sometimes flow not free, the emergence of the phenomenon of water and no law within the zone, affecting users of water. A similar accident, check the vacuum valve district water supply system, it can find; removing valve filter element is not unusual; some even suspect that the property management unit of the technical performance of the valve, multiple exchange new valve, but also solve the problem. When the installation location is reasonable to the design check the proportional pressure reducing valve, the existence of an inverted siphon phenomenon carefully check the network system, namely the partition the output pipeline of similar elevation. Such cases in the main, auxiliary building with a roof water tank, water supply system under a very easy to appear.These problems found, could be considered.
Chinabase Machinery is a group of manufacturing facilities, offering one-stop solution for mechanical power transmission products in China. We can supply a full-range of power transmission products, such as chains, sprockets and plate wheels, pulleys, roller chain,gearboxes, motors, couplings, gears and racks. Our product range also covers locking assemblies (clamping elements/locking device), taper bushes, QD bushes, bolt-on hubs, torque limiters, shaft collars, motor bases and motor slides, chain detachers, chain guides, universal joint, rod ends and yokes.
