This component is a direct OEM HVAC replacement part

Durable Construction: Heavy-duty bronze body and stainless steel strainers resist corrosion and scaling in harsh hydronic environments

upright mounting is preferred to prevent oil accumulation

offering superior longevity compared to lower-rated 370V alternatives

Siemens Building Technology SFA71U/25G Actuator 319852-301 This component is a directThe Siemens SFA71U 25G Actuator is a professional grade 2 position zone valve actuator designed for reliable control in hydronic systems. Engineered for seamless integration with the Siemens 599 Series zone valves, this 24V normally closed actuator provides a robust 105 N force to ensure tight shut off in high demand HVAC applications. This spring return valve actuator facilitates a mechanical fail safe in the event of power loss, making it a critical