Natural gas pipeline quick shut-off valve
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On the natural gas pipeline that supplies the gas boiler, is it necessary to install an on/off valve before it reaches the boiler? Is this valve a quick-close valve? Who can provide the valve selection parameters and models? Thank you
What is the shutdown time for the emergency shut-off valve of the natural gas pipeline? Are there any requirements in the standards?
The main requirement is a solenoid valve that shuts off when powered on and opens manually.
Without mentioning the caliber, the response requirements, or the process parameters, it’s impossible to make a choice
Medium, diameter, temperature, pressure, pressure difference before and after the valve, and flow requirements – with these details, it’s generally possible to determine which valve to use
When using a ball valve and rapid operation is required, pneumatic control should be employed; it is also advisable to include a quick-release valve to enable even faster valve operation
For safety reasons, a pneumatic valve should be added; a ball valve will suffice. Easy to control.
In accordance with Article 13.3.2 of GB50041-2008, a main shut-off valve that is connected to the gas concentration alarm device in the boiler room should be installed outside the boiler room. The available types of valves are pneumatic valves, electric valves, and solenoid valves. The shut-off time should be 10 seconds. The specifications for valve selection are given in CJ/T394-2012. Gas emergency shut-off valve
I passed by Xue*, and I haven’t really looked into this issue in detail. However, I have used the quick-shut valve in loading systems; it’s pneumatic and takes about 2 seconds to operate. I’m not sure if this is relevant to this system as well.
This is intended for natural gas suppliers, and it serves as a shutdown protection in the event of a natural gas leak； The burner control system of gas boilers is also equipped with a shut-off protection valve, which is used to shut down the boiler urgently in case of abnormal conditions in the boiler equipment.