What should always be used when making a connection from a chlorine ton container or a 150-pound container to a gas chlorination system?

Using a new lead washer when making a connection from a chlorine ton container or a 150-pound container to a gas chlorination system is essential for ensuring a proper seal and preventing leaks. These washers, specifically designed to withstand the corrosive nature of chlorine gas, effectively prevent gas leaks, which can pose serious safety hazards.

When a connection is made with an old lead washer, the potential for leaks increases due to wear and tear, which may compromise the integrity of the seal. A spare valve may be useful in certain maintenance situations but does not directly contribute to creating a secure connection between the container and the chlorination system. A rubber gasket, while it might be adequate in some scenarios, is generally not suitable for use with chlorine gas, as it may deteriorate or degrade when exposed to chlorine over time. Therefore, the use of a new lead washer is the safest and most reliable option for ensuring a secure connection in a chlorine gas system.