Door Closers: History, Types, And Fire Code Requirements.pdf

Located in St. Louis, MO (63109), Hager Companies specialize in modern door closer solutions. Their products cater to both commercial and residential applications.

Historical Context:

- Door closers originated in 1877 when a parishioner repurposed an old water pump to address a disruptive slamming door during church services.
- Currently, they are mandated by fire code (NFPA 80) for self-closing and self-latching fire doors to contain flames and smoke.

Door Closer Types and Applications:

- Spring Hinges: Used in residences for positive latching but can be tricky to adjust and not suitable for commercial use due to limited control.
- Windy Areas: Strong door closers with built-in stops protect doors from high wind, often recommended with overhead stops.
- Modern Closers: Sleek designs, various finishes, and advanced features like delayed action, latching speed control, and backcheck control enhance functionality and aesthetics.
- Heavy Duty Closers: Cast iron or aluminum alloy surface mount closers ideal for high traffic doors in commercial settings like schools, medical facilities, and hospitality industries.
- Concealed Closers: Almost invisible control with special templates, suitable for projects prioritizing discreet design.

Adjustability and Considerations:

- Closer adjustments involve manipulating hydraulic fluid flow through pistons. Precise measurements and leak-free installation are crucial.
- Ambient temperature affects hydraulic fluid performance, requiring consideration during extreme weather installations.
- Closer arms can be mounted in parallel or regular positions based on door push/pull sides, with options for heavy-duty, hold-open, and cushion stop features.
- Overhead holder/stops provide compression before a dead stop, available for surface or concealed mounting. They are not suitable for fire doors but can integrate with electromagnetic door holders tied to fire alarms.

Final Notes:

Door closers serve both functional and aesthetic purposes, offering customizable solutions for diverse commercial applications while adhering to safety regulations like NFPA 80 for fire doors.