Product Overview

WARNING: Cancer and Reproductive
Harm - www.P65Warnings.ca.gov
Available straight
and angled
body options
Under partial loads, the DPBV opens to ensure quiet
operation and appropriate pressures at the boiler circulator.
With all zones active, the DPBV remains closed
THE QUIET WAY TO ZONE
FIXED-SPEED SYSTEMS
DIFFERENTIAL
PRESSURE
BY-PASS VALVE
• Eliminates noise in a zoned hydronic system
with xed-speed primary circulator pump
• Protects system components
• Maintains system efciency
• Prevents over-pumping of zones
• Installs between the boiler supply and return
lines, or between zone legs in larger systems
• Installs in any orientation
• Press, FIP, MIP, and SWT connections
• Compatible with optional G1 Union accessories
webstonevalves.com/DPBV
VALVE INNOVATION
GUARANTEED FOR LIFE
CONDITIONS APPLY. SEE WEBSTONEVALVES.COM FOR FULL DETAILS.
BOILER
ZONE 1
(ACTIVE)
FIXED SPEED
PRIMARY CIRCULATOR
ZONE 2
(ACTIVE)
ZONE 1
(INACTIVE)
FIXED SPEED
PRIMARY CIRCULATOR
ZONE 2
(ACTIVE)
BOILER