The LiftMaster K90-FDOSV-24V Solenoid Valve Assembly is a genuine OEM replacement component engineered for select LiftMaster fire door operators, including FDO-series systems used on rolling steel fire doors in commercial and industrial facilities. This 24-volt solenoid valve works within the operator’s control and governor system to manage fluid flow for controlled door operation, helping ensure a reliable, predictable descent when the door is released during a test or alarm event. It restores proper function when the original valve becomes worn or inoperative, maintaining compliance-oriented performance for fire door assemblies.
Designed for integration with a 24V control circuit on compatible LiftMaster fire door operators, the K90-FDOSV-24V supports applications where code-driven testing and regular service are required. Installation should be performed by a qualified door technician following the LiftMaster service manual and local fire/life-safety standards, with operational testing per NFPA 80 after replacement. Use this part as an OEM replacement for LiftMaster FDO-series fire door operator repairs or upgrades in commercial settings; verify compatibility against your operator’s model and documentation before ordering.