VALVE MAGAZINE Fall 2025

, , Mechanical packing may look simple , but it has a long history shaped by ships, steam engines, industrial growth and environmental responsibility. The material that now seals valve stems in refineries, chemical plants and power stations started life in a very different setting: a rope workshop in colonial Boston. From ropewalks to revolution In the mid- s, Boston was home to long, narrow work shops called ropewalks, where bers were stretched and twisted into miles of rope. The British Navy depended on this rope to control the sails and rigging of its ships. Rope was not just a product — it was a strategic advantage – and the people who made it understood their importance. Rope makers were skilled craftsmen and, in many cases, deeply independent. They also felt the growing frustration toward British military presence. In early , arguments and physical fights broke out between rope workers and British soldiers stationed nearby. These ropewalk clashes helped raise tensions that led directly into the Boston Massacre. In a very real sense, rope helped spark the American Revolution.

Rope, Steam & Sealing: The Basics of Valve Packing

BY: RON FRISARD, Packing and Gasket Global Product Line Director COMPANY: A.W. CHESTERTON COMPANY

Motor-operated steam valve in service. Source: A.W. Chesterton Company (all images)

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WINTER 2024 FALL 2025