you should never replace a manual reset limit with an automatic reset furnace switch unless specified by the manufacturer

When replacing older valves

This critical component ensures uniform fuel distribution to the burner orifices

preventing the "dry-out" issues common with inferior third-party markers

Belimo ARX24-SR-T N4 Actuator 321894-709 you should never replace aThe Belimo ARX24 SR T N4 is a non spring return actuator engineered for high torque applications requiring precise proportional control. Operating on a 24VAC DC power supply, this modulating actuator accepts a 2 10VDC control signal to deliver 360 in lb of torque with a fixed 90 second run time. Designed for demanding environments, the NEMA 4X housing provides superior protection against corrosion and moisture in outdoor or wash down mechanical sites.