Belimo zone220n-50+zone24no Zone Valve 0.75 in Npt Cv 5

Product Description

The BELIMO zone220n-50+zone24no is a 2-way zone valve assembly combining a 3/4-inch NPT zone valve body with a spring return actuator rated for AC 24-volt on/off control. The valve carries a Cv rating of 5.0 and is configured normally open, meaning it returns to the open position on power loss via the spring return mechanism. Trim is stainless steel throughout, and the body is pressure-rated to 300 psi. This assembly is designed for zone isolation and flow control in hydronic systems and is typically installed by licensed HVAC and plumbing technicians.

This valve assembly is suited for residential and light commercial hydronic systems handling chilled or hot water, including glycol solutions up to 50 percent concentration. The normally open configuration makes it appropriate for applications where a fail-open condition is required on loss of power. The equal percentage flow characteristic provides precise modulation across a range of load conditions, making it a common choice for zone control in fan coil, air handler, and radiant loop applications.

Key Features

• 2-way, normally open valve returns to open position on power loss via spring return
• Cv 5.0 with equal percentage flow characteristic for consistent zone flow control
• 3/4-inch NPT internal thread fitting for standard threaded pipe connections
• Stainless steel trim rated for chilled or hot water and up to 50 percent glycol solutions
• Body pressure rating of 300 psi for compatibility with a wide range of hydronic system pressures
• AC 24-volt on/off control signal for straightforward integration with standard zone controllers

Compatibility

Designed as an OEM-style zone valve assembly for 3/4-inch NPT hydronic piping systems requiring AC 24-volt on/off spring return actuator control in normally open configurations.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber in accordance with applicable mechanical codes. Shut off system water flow and relieve line pressure before removing or installing the valve assembly. Ensure the actuator wiring is connected to a properly fused 24-volt AC control circuit before energizing. Do not exceed the rated body pressure of 300 psi or use fluids outside the specified glycol concentration limit.