The Caleffi Differential Pressure By-pass Valve is used in systems with a fixed speed circulating pump supplying several zones controlled by two way zone valves. This valve ensures that the head pressure of the pump is proportional to the number of two way valves being closed. It will bypass the differential pressure created by the pump as the zone valves close, thus eliminating water hammer noise. The Caleffi Differential Pressure By-pass Valve has a Maximum Primary Flow Rating of 9 GPM.
Caleffi 519502A Features
Used in systems with a fixed speed circulating pump supplying several zones
Connection Type: Threaded
Connection Size: 0.75 Inches
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Warning: This product can expose you to chemicals including Lead which is known to the State of California to cause Developmental Harm.
Parts Warranty Parts WarrantyA warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
2 Years
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