Automatic return valve opening and closing itself has a buffer performance, in normal circumstances, reflect effect is very good, but because of some piping is more complex, there are very few to produce water hammer phenomenon. Backwater automatic opening and closing valve is a kind of tube in boiler water system on the opening and closing of valve, mainly to solve the existing boiler backwater hand-operated valve can't along with the opening and closing of the boiler circulating pump type, often cause the problem of boiler water. Method is mainly in the valve body with piston axis, axis piston top connections, the bottom connection valve cone, cone valve under pressure spring. Boiler circulating pump piston pressure downward movement by hot water at work, conical Industrial Valves is opened, the water pump stops, the hot water loss of pressure, cone valve rises the Industrial Valves closed, fundamentally solve the problem of the boiler water. Backwater automatic opening and closing valves open and close valves on the installation method 1, automatic backwater installation and position, and pay special attention to the body the direction indicated by an arrow. 2, automatic backwater open-close gate valves shall be set up on both ends of the valve body. 3, backwater automatic opening and closing valve control tube must be answered in the outlet pipe road, and must be between a pump export and check valve. Don't put on the check valve pipe outlet receive, otherwise, the valve does not work. 4, may not be the first class debris into the valve tapping. 5, this valve must be installed before the dirt separator, otherwise prone to clutter cushion valve leakage phenomenon. Backwater automatic opening and closing valve operating rules 1, check the process is in line with the construction drawing, the valve direction is correct, after hand motive pump no abnormal phenomenon, idle running normal, in the right direction. Line 2, the pump inlet valve, control valve, exhaust valve, deluge valve open, add water to the system, after waiting for air line net, will vent valve, deluge valve closed again, can open water pump. 3, two pumps in parallel ( Open a case) Cannot at the same time open control valve, otherwise automatic check valve is not easy to open. After the 4, stop the pump automatically check temporarily open, should be prior to stop pump control valve locked, then stop the pump. 5, automatic check valve closed too quickly when the noise is bigger, control valves can be down to the appropriate location. Common backwater automatic opening and closing valve fault handling solution (1) opening and closing valve to open it look carefully the installation of this valve is reasonable, correct operation, the control pipe valve is on. (2) the boiler water pump is going to check whether the operating error, check whether the check valve is leaking. This return automatically opening and closing valve is necessary for atmospheric pressure boiler water pipe, can also be used as liquid switch with pipe. Only with this valve can truly realize atmospheric boiler operation, otherwise the atmospheric boiler will not be able to work, or dangerous work pressure, or need to use expensive electromagnetic control device. Backwater automatic opening and closing valve - Pump valve network quality suppliers recommendation: http://www. zgbfw。 com/search/supplysea。 aspx吗? 类型= 1 & 关键= % bb % d8%cb % ae % d7%d4%b6%af % c6%f4%b1%d5%b7%a7
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