Taco 006-ST4 Cartridge Circulator

Taco 006-ST4 Cartridge Circulator is a compact 3/4" FNPT lead-free stainless steel pump designed for dependable hot water circulation in homes and light commercial systems. The Taco 006-ST4 Cartridge Circulator delivers steady flow with a 1/40 HP motor and is designed to replace 006-B, making upgrades straightforward and downtime minimal.

Constructed from lead-free stainless steel and featuring a robust cartridge design, this cartridge circulator ensures long-lasting performance in hydronic heating, radiant floors, and domestic hot water recirculation. Its compact footprint fits tight utility spaces while delivering reliable, quiet operation.

• 3/4" FNPT connections
• Lead-free stainless steel cartridge
• 1/40 HP motor for efficient pumping
• Replaces 006-B for easy upgrades
• Quiet, reliable operation in hydronic systems
• Ideal for radiant heating and domestic hot water recirculation

Designed for easy installation, this circulator uses standard 3/4" FNPT fittings, supports quiet operation in living spaces, and is compatible with most hydronic heating circuits. Its lead-free build aligns with safety and environmental standards.