Zone Valves

Zone valves provide controlled flow for individual heating zones in zoned heating, hydronic heating and cooling, and select steam valve applications. HVAC professionals and facility maintenance teams use motorized valves, diverting valves, actuators, and replacement motors when installing, operating, or servicing compatible zone-control equipment.

Product Display:
Helpful Buying Guide

Choose zone valve components for the control setup you have

The products represented in this category include complete motorized zone valves, valve actuators, a replacement motor, and a modulating actuator. Start by determining whether the job calls for a complete valve assembly or a service component, then compare voltage, normal position, valve function, connection style, flow capacity, and control features.

Visual Guide

Popular examples in this category

24V Motorized Zone Valve, 1 in. NPT, 10 Cv24V Motorized Zone Valve, 1 in. NPT, 10 CvWBB394119120V Normally Closed Motorized Zone Valve, 3/4 in. Sweat, 8 Cv120V Normally Closed Motorized Zone Valve, 3/4 in. Sweat, 8 CvWBB394220Low-Voltage Motorized Zone Valve, 1 in. Sweat ConnectionLow-Voltage Motorized Zone Valve, 1 in. Sweat ConnectionWBB39408024V Normally Closed Hydronic Valve Actuator with End Switch - Model AG13A02A24V Normally Closed Hydronic Valve Actuator with End Switch - Model AG13A02AWBB850843
Use Cases

Control individual heating zones

Motorized zone valves are used to control flow for individual heating zones. Available examples include valves for hot-water flow, hydronic zone operation, and a 3-way diverting configuration.

How to Choose

Match the electrical and piping details

Compare the required control voltage, normally open or normally closed position, connection type and size, and stated Cv capacity. For actuators, confirm compatibility with the valve body and whether an end switch is needed.

Applications

Support hydronic, heating, cooling, and steam work

The represented products are intended for zoned heating equipment, hydronic heating and cooling systems, hot-water flow control, and steam valve systems.

Additional Information

Consider serviceable components and control features

Selected products offer manual opening, automatic return, replaceable powerheads or motors, push-button attachment, spring return, integrated or separate end switches, and attached leads.

24VLow-voltage options

Represented on motorized valves, actuators, a replacement motor, and a modulating actuator.

120VLine-voltage options

Represented on motorized zone valves and a normally closed steam valve actuator.

3.5–10 CvStated valve capacities

Shown across represented complete motorized zone valves.

3-wayDiverting valve option

A 24V, 3/4 in. sweat diverting valve includes an integrated end switch.

Comparison Guide

Compare the represented zone-control product types

Use this overview to identify the type of component and selection details relevant to the work.

Product typeWhat it doesSelection details shown
Motorized zone valvesProvide powered flow control for an individual heating zone.24V or 120V options; 1 in. NPT, 3/4 in. sweat, or 1/2 in. flare connections; stated capacities from 3.5 to 10 Cv.
3-way diverting motorized valveDirects flow between three connections for controlled hydronic zone operation.24V operation, 3/4 in. sweat connection, integrated end switch, and 7 Cv capacity.
Valve actuators and service componentsOperate compatible valve bodies or restore a compatible zone valve motor.Normally open or normally closed options, 24V, 120V, or 208V operation, spring return, and end-switch availability vary by product.
Planning Guide

Plan the right fit before choosing

Start With the Component Type

Choose a complete valve, actuator, or replacement part

Complete motorized zone valves provide powered flow control and are represented with threaded, sweat, flare, and 3-way diverting configurations. Actuators operate compatible valve bodies, while a replacement motor is available for compatible V8043 and V8044 zone valves.

  • Choose a complete valve for a new or replacement valve assembly.
  • Choose an actuator for a compatible installed valve body.
  • Choose the 24V replacement motor only for compatible V8043 and V8044 zone valves.
Match System Requirements

Compare voltage, operation, connection, and capacity

Products in this category span 24V low-voltage, 120V line-voltage, and 208V actuator applications. Valve connection options shown include 1 in. NPT, 3/4 in. sweat, 1/2 in. flare, and 3/4 in. sweat 3-way diverting designs. Stated valve capacities range from 3.5 Cv to 10 Cv among the represented products.

  • Match 24V, 120V, or 208V operation to the control requirement.
  • Select normally closed or normally open operation as required by the valve control setup.
  • Match the piping connection and use the stated Cv capacity for system selection.
Review Control and Service Features

Select features that fit the installation

An end switch is available on selected valve and actuator options for coordinated system control, while other actuators are offered without an end switch. Spring-return actuators provide two-position on/off operation, and the modulating actuator provides proportional control with adjustable 90 to 160 degree stroke.

  • An end switch can provide a connection point for coordinated system control.
  • Push-button attachment can allow actuator installation or removal from a compatible valve body without linkages or calibration.
  • Manual opening and replaceable components are available on selected low-voltage motorized valve designs.
FAQ

Common questions before buying

What types of products are included in this category?

The represented products include motorized zone valves, a 3-way diverting motorized valve, hydronic and steam valve actuators, a replacement motor, and a spring-return modulating actuator.

What voltage options are represented?

The product summaries include 24V, 120V, and 208V options. The 24V replacement motor is specified for 50/60 Hz operation, and the 208V actuator is specified for 50/60 Hz operation.

How do I compare valve connections?

Match the existing or planned piping requirement to the connection shown. Represented options include 1 in. NPT, 3/4 in. sweat, 1/2 in. flare, and a 3/4 in. sweat 3-way diverting design.

When is an end switch relevant?

An end switch provides a connection for coordinated system control. Some represented valve and actuator products include an end switch, while other actuator options are specified without one.

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