This Lochinvar bypass valve is a crucial component designed to regulate the flow of fluid in heating and cooling systems. It operates by allowing some fluid to circulate back into the system when the pressure becomes too high, thereby preventing potential damage caused by overpressure. The valve is constructed from durable materials that can withstand high temperatures and pressures, ensuring longevity and reliable performance. It is compatible with various Lochinvar models, making it a versatile replacement part for numerous heating and cooling systems. The bypass valve has a compact design for easy installation and minimal interference with system operations.