Taco 555-050RP Zone Valve Power Unit

Taco 555-050RP is a replacement zone valve power unit designed for the 556 and 570 series, delivering reliable zone control for your hydronic system. It also replaces Sparco 500-1RP and 500-RP, offering a convenient upgrade or repair part for radiant heating circuits.

This replacement unit acts as the compact, efficient controller that powers your zone valve, ensuring fast response to heat calls and smooth operation across your home’s heating zones. Compatible with common Taco and Sparco configurations, it simplifies service and reduces downtime in residential or light commercial setups.

Designed for quick, straightforward replacement, the 555-050RP minimizes service time while providing durable performance in everyday heating scenarios. Its robust construction helps ensure dependable operation year after year in a connected hydronic system.

• Replaces Sparco 500-1RP and 500-RP
• Compatible with Taco 556 and 570 series zone valves
• Easy drop-in replacement for fast service
• Durable construction for long-lasting reliability
• Ideal for radiant floor heating, baseboard, and other hydronic loops