How can fire protection measures be implemented for cut-off valves?

1. Install pipe flame arresters. 2. Add alarms for flammable and explosive gases

It’s the fire isolation valve; our company has it. The specific contact information is listed under my signature, QQ: 414169474

Let’s talk first about the measures you have taken

This post was last edited by shiwendong on 2018-3-18 at 22:02. The fuse valve for flammable storage tanks is installed on the inlet and outlet pipelines of such tanks; when the ambient temperature reaches a set value or when the temperature rises to a specified level, the fuse valve can automatically and quickly shut off the flow of fluid in the pipeline. It is a valve that operates automatically without the need for a power source or gas supply. 1: A dedicated safety valve for storage tanks, requiring no electro-mechanical control, with fully mechanical temperature sensing for shutdown. II: Pure mechanical control design (suitable for all flammable liquids and gases such as liquefied hydrocarbons in oil tanks). III: The device can be operated remotely and has signal sensor functions. IV: Mechanical principle-based design – no manual operation or external force is required to shut down the system; the fire itself can trigger the automatic shutdown of the device, ensuring safety and reliability ； What are the special requirements for emergency shut-off valves? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1914876 (Source: Haichuan Chemical Industry Forum Website)

Fire protection for the valve body: Fire-resistant valves shall be selected in accordance with API607. Fire protection for the actuator: Fire-resistant protective covers shall be selected in accordance with SH/T 3005-2016

It is essential that the valve body be fire-resistant. For single-acting FC valves, an actuator along with a fusible plug is used; when the temperature exceeds 200°C, the fusible plug melts, allowing the pressure in the cylinder to be released, and the valve closes thanks to the spring. For valves that are of the FO type, or for double-acting actuators, consider using fire shields; such shields must meet the UL-1709 standards. In addition, the air supply pipes also need to be covered and treated to be fire-resistant. Additionally, cables and trunking in fire-hazardous areas should also be of fire-resistant type.