Q
What type of gas is this safety valve compatible with?
This valve is designed for use with natural gas only. It is not rated for LPG or other gas types unless otherwise specified by the manufacturer.
Q
What is the difference between aluminum alloy and copper alloy body models?
Both materials provide reliable sealing and durability. Aluminum alloy models (standard series) are lightweight and cost-effective, while copper alloy models (Cu series) offer enhanced corrosion resistance and are often preferred for more demanding installation environments.
Q
How does the automatic closing function work?
The valve monitors the gas flow rate continuously. When the flow exceeds the shut-off flow rate threshold (due to a leak or abnormal usage), the valve automatically closes within ≤3 seconds to prevent gas accidents. It can also be closed manually at any time.
Q
What are the over-pressure and under-pressure protection ranges?
The over-pressure protection activates at 8kPa ± 2kPa, while under-pressure protection activates at 0.8kPa ± 0.2kPa. These ranges ensure the valve responds to both abnormally high and low gas supply pressures, providing comprehensive safety coverage.
Q
Where should this safety valve be installed?
The valve should be installed directly in front of the gas burning appliance, such as a gas stove or cooktop. It is positioned on the gas supply line to intercept gas flow in case of an emergency.
Q
Which execution standard does this product comply with?
This product complies with the Chinese industry standard CJ/T 447-2014, which governs the design, performance, and safety requirements for excess flow valves used in residential gas systems. Factory sealability is tested at an inlet pressure of 30kPa.
