Connections bulk transfer

This section covers transfer connections between bulk transport equipment for liquefied gases or cryogenic liquids and termination points such as station storage containers. These connections do not apply to ambient-temperature vessels such as cylinders. 

As with cylinder valve connection philosophy, the intent of standardizing transfer connections is to minimize the proliferation of connection types for the same application and to avoid potentially hazardous cross connections. Standard transfer connections for the applications described above consist of (1) a fixed end connector at the termination point, (2) a hose nut, (3) a headpiece, and, in the case of cryogenic liquids, (4) a gasket. 

The fixed end connector is typically an integral part of the stationary container. The headpiece is the end connection of the transfer hose. The hose nut is a swivel-mounted nut captured on the hose by the headpiece. When the nut is tightened, a leak-tight seal is attained. 

Drawings and specifications for standard transfer connections for cryogenic liquids are contained in CGA V-6, Standard Cryogenic Liquid Transfer Connections. [10] Drawings and specifications for carbon dioxide liquid and vapor transfer connections are contained in CGA V-6.1, Standard Carbon Dioxide Transfer Connections. [11] 

Ethyl Methyl Ether See Methyl Ethyl Ether  

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Cylinder Valve, Cylinder Ancillary Equipment, and Bulk Transfer Connections... 

Cylinder Valve, Cylinder Ancillary Equipment, and Bulk Transfer Connections 149 Table 9-2. National Gas Taper (NGT) Threads (continued)... 

For more detailed information about cylinder valve outlet and inlet connections, cylinder ancillary equipment connections, bulk transfer connections, and regulators, refer to Chapter 8. 

Pressure relief and safety devices have uniquely contributed to the safe utilization of compressed gases. Chapter 7 will provide insights into the evolution and systematic application of the various types of pressure relief devices now in use. Likewise, the systematic use of cylinder valve connections, connections to ancillary equipment, and bulk transfer connections has evolved into a methodology that is intended to help ensure that the proper gas is actually connected for the intended application. This methodology,... 

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