Measures that should be paid attention to when installing valves, shared by Shanghai Guanhuan Valve Co., Ltd.
Release time：2023-05-27 16:08:12
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When the valve is installed, in order to prevent foreign matter such as sand in the metal from invading the valve and damaging the sealing surface, a filter and a flushing valve must be installed in front of the valve; in order to maintain compressed air and clean air, an oil-water separator must be installed in front of the valve , or an air filter; in order to check the working status of the valve during operation, it is necessary to set up an instrument and a check valve; in order to maintain the temperature when the valve is operated, an insulation facility should be set outside the valve; for the installation after the valve, it is necessary to set up a safety valve or Check valve; Considering the continuous operation of the valve, it is easy to be dangerous, so a parallel system or a bypass system is set up.
1. Protective measures for the check valve: In order to prevent the leakage of the check valve or the reverse flow of the medium after failure, which will cause the quality of the product to decline and cause serious accidents, we need to install one or two shut-off valves before and after the check valve. If two cut-off valves are provided, the check valve can be easily disassembled for maintenance.
2. Protective measures for the safety valve: Generally, there is no isolation valve before and after the installation method, and it can only be used in extremely rare cases. If the medium force contains solid particles, which affect the safety valve and cannot be closed tightly after it takes off, a gate valve with lead seal should be installed before and after the safety valve. The gate valve should be in a fully open state. The gate valve produced by Shanghai Guanhuan Valve Manufacturing Co., Ltd. Install a DN20 check valve leading to the atmosphere directly with the safety valve. When the medium such as wax and other media released to appease and release is in a solid state at normal temperature, or when the temperature of light liquid and other media is lower than 0 degrees Celsius due to decompression and gasification, the safety valve needs steam tracing. For safety valves used in corrosive media, depending on the corrosion resistance of the valve, it is considered to add a corrosion-resistant explosion-proof membrane to the valve inlet. The gas safety valve is generally equipped with a bypass valve according to its diameter, which is used for manual venting.
3. Protective measures for pressure reducing valves: There are generally three forms of pressure reducing valve installation facilities. Pressure gauges are installed before and after the pressure reducing valve to facilitate observation of the pressure before and after the valve. Moreover, there is a fully enclosed safety valve behind the valve to prevent the pressure behind the valve from jumping when the pressure after the valve exceeds the normal pressure after an accident occurs due to the failure of the pressure reducing valve, including the system after the valve. The drain pipe is installed in front of the shut-off valve in front of the valve, and is mainly used for drainage and river flushing, and some use drain valves. The main function of the bypass pipe is to close the shut-off valves before and after the pressure reducing valve when the pressure reducing valve fails, open the bypass valve, and adjust the flow manually to play a temporary circulation role, so as to repair the pressure reducing valve or replace the pressure reducing valve.
4. Protective measures for steam traps: There are two kinds of bypass pipes and no bypass pipes on the side of the steam trap, there are condensate recovery and condensate non-recovery payment, the drainage is up to and other special requirements. Install facilities in parallel. The main function of the steam trap with bypass valve is to discharge a large amount of condensate when the pipeline starts to run. When overhauling the trap, it is inappropriate to use the bypass pipe to discharge the condensed water, which will cause steam to escape into the return water system
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1. Protective measures for the check valve: In order to prevent the leakage of the check valve or the reverse flow of the medium after failure, which will cause the quality of the product to decline and cause serious accidents, we need to install one or two shut-off valves before and after the check valve. If two cut-off valves are provided, the check valve can be easily disassembled for maintenance.
2. Protective measures for the safety valve: Generally, there is no isolation valve before and after the installation method, and it can only be used in extremely rare cases. If the medium force contains solid particles, which affect the safety valve and cannot be closed tightly after it takes off, a gate valve with lead seal should be installed before and after the safety valve. The gate valve should be in a fully open state. The gate valve produced by Shanghai Guanhuan Valve Manufacturing Co., Ltd. Install a DN20 check valve leading to the atmosphere directly with the safety valve. When the medium such as wax and other media released to appease and release is in a solid state at normal temperature, or when the temperature of light liquid and other media is lower than 0 degrees Celsius due to decompression and gasification, the safety valve needs steam tracing. For safety valves used in corrosive media, depending on the corrosion resistance of the valve, it is considered to add a corrosion-resistant explosion-proof membrane to the valve inlet. The gas safety valve is generally equipped with a bypass valve according to its diameter, which is used for manual venting.
3. Protective measures for pressure reducing valves: There are generally three forms of pressure reducing valve installation facilities. Pressure gauges are installed before and after the pressure reducing valve to facilitate observation of the pressure before and after the valve. Moreover, there is a fully enclosed safety valve behind the valve to prevent the pressure behind the valve from jumping when the pressure after the valve exceeds the normal pressure after an accident occurs due to the failure of the pressure reducing valve, including the system after the valve. The drain pipe is installed in front of the shut-off valve in front of the valve, and is mainly used for drainage and river flushing, and some use drain valves. The main function of the bypass pipe is to close the shut-off valves before and after the pressure reducing valve when the pressure reducing valve fails, open the bypass valve, and adjust the flow manually to play a temporary circulation role, so as to repair the pressure reducing valve or replace the pressure reducing valve.
4. Protective measures for steam traps: There are two kinds of bypass pipes and no bypass pipes on the side of the steam trap, there are condensate recovery and condensate non-recovery payment, the drainage is up to and other special requirements. Install facilities in parallel. The main function of the steam trap with bypass valve is to discharge a large amount of condensate when the pipeline starts to run. When overhauling the trap, it is inappropriate to use the bypass pipe to discharge the condensed water, which will cause steam to escape into the return water system
For more information about valve product news and information, please click: http://www.ghval.com/
More butterfly valve series
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