this o-ring is designed to fit those legacy control valve specifies

Braze the middle suction line first to stabilize the valve

Key Benefits: Rotatable Form: Permits 180-degree rotation for flexible cable entry and easier routing in compact layouts

OEM Compatibility: Designed specifically as an HFO-0028 replacement part for seamless integration with existing KMC Controls hardware

Its rugged design eliminates mechanical play between the valve stem and the actuator drive

Zonefirst AOBD-10X6 Damper Els PW 17895 this o-ring is designed toAs a veteran tech, you know that airflow control is only as good as the hardware in the duct. The Zonefirst AOBD 10X6 is a professional grade automatic opposed blade damper designed for precision HVAC zoning. Built with a 10" wide by 6" high extruded anodized aluminum frame, this motorized zone damper uses a 24Vac power open power closed actuator to ensure positive position control without the failure points typical of spring return models. The