555-050RP Zone Valve Power Head For Taco 550 570 Series 555 556 557 570 571 572

Zone Valve Power Head for Taco

This zone valve power head for Taco (part number 555-050RP) replaces the actuator on Taco 550 and 570 series zone valves, crossing to models 555, 556, 557, 570, 571, and 572.

Overview

The 555-050RP zone valve power head for Taco is a motorized actuator that opens and closes hydronic zone valves to regulate heating flow in residential and light commercial systems. It directly replaces original Taco heads on 550 and 570 series valve bodies, restoring automatic zone control without replacing the entire valve. HVAC technicians and homeowners rely on this power head to maintain efficient, room-by-room temperature management.

Built For Performance

• Synchronous motor provides quiet, reliable open/close operation
• Manual lever allows easy override and valve position indication
• Snap-on mounting simplifies installation without tools on Taco valve bodies
• Pre-wired power head reduces wiring time with color-coded leads
• Enclosed housing protects internal components from dust and minor moisture
• Compatible with 24V AC control circuits common in hydronic heating

Fits These Machines

• for Taco 555 zone valve
• for Taco 556 zone valve
• for Taco 557 zone valve
• for Taco 570 zone valve
• for Taco 571 zone valve
• for Taco 572 zone valve

On-The-Job Use

• Replacing failed power heads on multi-zone baseboard heating systems
• Service calls for Taco zone valves in boiler-fed hydronic loops
• New installations of zoning panels for radiant floor heating
• Retrofit projects upgrading older Taco 550 series valves

Specs At A Glance

Good To Know

Q: Will this power head work with my existing Taco zone valve body? A: It fits Taco 550 and 570 series valve bodies and models 555 through 572; verify your valve’s model number before ordering.

Q: Can I use this actuator to manually open the valve during a power outage? A: Yes, the manual lever lets you open the valve temporarily for gravity circulation or troubleshooting when power is off.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.