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The RESIDEO pv125 is a 1-1/4 inch NPT SuperVent air eliminator designed for closed loop hydronic heating and chilled water systems. It automatically purges entrained air from the system without manual bleeding, using a no-clog vent assembly that resists fouling from dirt and debris. Rated for a maximum operating pressure of 125 psi and temperatures up to 240 degrees F, this bronze-bodied eliminator delivers a 22 Cv flow capacity. It is installed by licensed plumbers and HVAC technicians servicing residential and commercial hydronic systems where conventional float-type air vents have proven unreliable or prone to leakage.
The pv125 is suited for residential and commercial closed loop hydronic heating systems and chilled water circuits where air accumulation causes noise, inefficiency, and circulation problems. The bottom inlet connection accepts 1-1/4 inch NPT piping and fits into standard air elimination points in the system, such as near the boiler or at high points in the loop where air naturally collects. Its self-contained automatic operation reduces the need for manual intervention during system commissioning and ongoing service.
Designed for residential and commercial closed loop hydronic heating and chilled water systems with 1-1/4 inch NPT piping connections.
Installation should be performed by a licensed plumber or HVAC technician familiar with hydronic system piping. Shut down the boiler or chiller and relieve system pressure before removing any existing air vent or fitting. The unit accepts a 1-1/4 inch NPT bottom inlet connection and should be installed at a high point in the loop or at the boiler supply where air accumulates. Follow local plumbing codes and the International Plumbing Code (IPC) for hydronic system components and pressure ratings.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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