What is flexible piping commonly referred to when connecting a chlorine container to stationary piping?

Flexible piping that connects a chlorine container to stationary piping is commonly referred to as a pigtail. This term is used in the context of gas or chemical piping systems, particularly for gases stored in pressurized cylinders, like chlorine. The pigtail is designed to accommodate the movement, vibrations, or any slight misalignment between the cylinder and the stationary system it connects to.

Pigtails are typically constructed from flexible materials that can handle the pressures involved without leaking, ensuring safe operation when handling hazardous materials such as chlorine. Their design helps in preventing stress on the connections from thermal expansion, contraction, or operational movement, which is crucial for maintaining integrity and safety in chemical handling systems.

The other terms relate to different applications in piping or fasteners but do not specifically refer to this flexible connection type to a chlorine container. Thus, "pigtail" accurately denotes this unique piping component in the context of chlorine delivery systems.