Bachmann - 5421 - Tank Car, Triple Dome, 40 Foot - Union 76 - 10162

Model Information: The model was first made by Bachmann in the late 1960s. The early versions were also sold using their Parkways Industries label. It was eventually retired and replaced by a completely new tooling in 2012. The new tooling is different enough, that it is listed as a different series.

Prototype History: Triple Dome tank cars, while not as common as single-domes, are a railroad staple. They have been around since the first half of the 20th century.

The dome above tank cars serves as an expansion chamber as temperature affects the volume of any liquids contained within. With no dome, if the liquid did not 100% fill the tank, then it is possible for the liquid to slosh around inside the tank, causing instability and increasing the possibility of a derailment. The dome allows the tank to be slightly overfilled so that should the volume in the main section decrease due to colder temperatures or even a small leak, that there will still be sufficient liquid within to prevent sloshing. Similarly if temperature increases, the liquid can rise up inside the dome preventing excess pressure within the tank. While not as serious as an underfilled tank, an over-pressurized tank might present problems during unloading.

If you see three domes on a tank car it is because there are three separate compartments inside the tank car each containing a different liquid. This was desirable for many reasons.

Often times a delivery would consist of much less than a carload (LCL) of liquid. Remember the sloshing problem? So if you only had to fill a third of a tank with your commodity, then you can avoid the issue by using one of the three chambers within the tank car. Also, you might have several grades of a commodity to deliver such as unleaded, leaded and diesel fuel and you need them to be kept separate. Or you might be producing wine and you want your white wine kept separate from your red wine. Or maybe all three chambers had the same contents but were being delivered to three different customers. It can be very difficult to determine when one third of a single dome tank car has been discharged...

For all these reasons, three-dome tank cars were a common sight in the first half of the 20th century. However, with the rise of the interstate highway system and the modern trucking industry, LCL deliveries have primarily been accomplished with tanker trucks instead of tank cars and the three-dome tank car has gradually disappeared from the North American rail network.

Road Name History: 76 (formerly Union 76) is a chain of gas stations located within the United States. The 76 brand is owned by Phillips 66 Company. Union Oil Company of California, dba Unocal, the original owner and creator of the Union 76 brand merged with Chevron Corporation in 2005.

In 1997, Unocal sold its western United States refining and marketing operations and the rights to the Union 76 brand for use in refining and marketing operations to Tosco Corporation. Tosco has since been purchased by Phillips Petroleum, which merged with Conoco to form ConocoPhillips. As of May 1, 2012, the "76" brand is owned by the Phillips 66 Company. Unocal continued to own the "76" trademark for use in its operations, with the exception of the divested Refining and Marketing business. On August 10, 2005, Unocal Corporation and Union Oil Company of California were acquired and merged into a subsidiary of Chevron Corporation.

76, Conoco, and Phillips 66 market their brand of gasoline under the brand name PROclean. The previous brand name for their gasoline was Propower. 76 gasoline stopped being marketed under the Propower name after the termination of the commercial relationship between NASCAR and 76 after the end of the 2003 season when the firm discontinued all motorsport fuels. As of October 2004, PROclean brand fuel was included onto the list of fuels recognized as "Top Tier".

From Wikipedia

Brand/Importer Information: Bachmann Industries (Bachmann Brothers, Inc.) is a Bermuda registered Chinese owned company, globally headquartered in Hong Kong; specializing in model railroading.

Founded in Philadelphia, Pennsylvania, the home of its North American headquarters, Bachmann is today part of the Kader group, who model products are made at a Chinese Government joint-venture plant in Dongguan, China. Bachmann's brand is the largest seller, in terms of volume, of model trains in the world. Bachmann primarily specializes in entry level train sets, and premium offerings in many scales. The Spectrum line is the high quality, model railroad product line, offered in N, HO, Large Scale, On30, and Williams O gauge all aimed for the hobbyist market. Bachmann is the producer of the famous railroad village product line known as "Plasticville." The turnover for Bachmann model trains for the year ended 31 December 2006 was approximately $46.87 million, a slight increase of 3.36% as compared to 2005.