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In power generation, particularly in steam systems, wedge type gate valves facilitate the control and regulation of water and steam flow. Additionally, they are frequently found in chemical processing plants, where robust performance amid corrosive or high-temperature environments is critical.

According to Atlas Obscura, manholes date back to the mid-19th century when cities around the world were building underground sewage systems. Engineers realized that they needed to access the sewer systems for the purpose of inspecting the pipes during normal maintenance. Consequently, cities began digging access holes that could accommodate a human (as these workers were typically men, the access points were called manholes) and these became the portals through which engineers or inspectors could crawl to investigate the pipes. 

Additionally, the design of gate valves often incorporates features such as resilient seats and anti-friction coatings to improve durability and performance. Sealing mechanisms must be strong enough to handle the unique challenges posed by natural gas, preventing leaks that could lead to significant safety hazards.