The extender is suitable for media such as seawater, freshwater, cold and hot water, drinking water, domestic wastewater, crude oil, fuel oil, lubricating oil, finished oil, air, coal gas, steam not exceeding 250 degrees Celsius, and granular powders.Purpose of the Expander: The expander is a new product for connecting pumps, valves, pipes, and other equipment to pipelines. It is assembled using all-bolt connections, forming an integrated unit with a certain degree of displacement for easy installation. It can withstand the axial pressure of pipelines. This allows for adjustments based on the on-site installation dimensions during installation and maintenance. During operation, it not only improves work efficiency but also provides certain protective effects for pipeline equipment such as pumps and valves.