Safety Valve

Safety valve also known as the built-in safety shut-off valve or emergency cut-off valve, is a valve installed on the loading and unloading port of liquid dangerous goods tank vehicles' metal atmospheric pressure tank body. The Safety valve is located close to the bottom of the tank body and serves only one purpose. It is closed during non-loading and unloading operations.

The submarine Safety valve consists of five parts: the shell, sealing mechanism, transmission mechanism, tank body connection flange, and outlet flange. The sealing mechanism extends into the tank body and uses stainless steel spring force for axial self-sealing to keep the submarine valve in a normally closed state. It is opened and closed through the transmission mechanism.

Currently, the submarine safety valve has two main operating control modes: manual and pneumatic. The main body materials are mainly aluminum alloy and stainless steel.

Part NO. HDF-SS100

Material: stainless steel.

DN:4’’

HDF-SS100 bottom emergency valve for tank is stainless steel manual type emergency valve.

Bottom safety valves are used in tank trucks to prevent over-pressurization of the tank during filling or unloading operations. Over-pressurization can occur due to a variety of factors, such as a malfunctioning pump or a blockage in the discharge line. If the pressure in the tank exceeds the design limit, it can cause the tank to rupture, leading to a potentially dangerous situation for the operator and the environment.

Bottom safety valves are designed to open at a pre-determined pressure, allowing excess pressure to be released from the tank and preventing it from exceeding the safe operating limits. This helps to protect the tank and its contents from damage, and also helps to prevent spills and leaks that can be harmful to the environment.

In addition to preventing over-pressurization, bottom safety valves can also help to minimize the risk of static electricity buildup in the tank. This is particularly important when transporting flammable liquids, as static electricity can ignite the vapor and cause a fire or explosion.

The use of bottom safety valves is an important safety measure that can help to prevent accidents and protect the environment during tank truck operations.

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