Description
The Caleffi 519502A Differential Bypass Valve, 3/4” NPT, is an essential component in HVAC systems, because it has the ability to control pressures and adjust to variations in such pressure. This valve is required due to the part with numerous zones and especially thermostatic or motorized zone valves to make its work smooth and protect the pump from high pressure. Owing to a durable construction and a 3/4” NPT tap, the product offers fuss-free compatibility with home and workplace hydronic heating and cooling systems. Through regulating the pressure within a system, it increases energy performance and reliability of equipment, and decreases noise emission and damage of parts.









