Hold open door hinges combine self-closing, spring return, and hold-open functions in a single hinge barrel — with the holding mechanism concealed entirely inside, leaving no visible external hardware. Waterson closer hinges with the optional hold-open feature are designed for daily-use commercial doors in hospitals, offices, and other facilities where doors need to remain open during active use periods without door stops or unsightly propping devices.
| Fire Rating | UL-listed, 3-hour (self-closing function; hold-open restricted on fire doors) |
|---|---|
| Code Compliance | NFPA 80, ADA, ICC A117.1, ANSI/BHMA A156.17 Grade 1 |
| Material | Stainless steel (interior and exterior rated) |
| Available Sizes | 4", 4.5", 5", 6" commercial hinges |
| Hold-Open Angle | Approximately 85–90 degrees |
| Hold-Open Location | Concealed inside hinge barrel (no visible external mechanism) |
| Functions Combined | Door closer + spring hinge + hold-open (3-in-1) |
| Fire Door Restriction | Hold-open requires self-releasing system on fire-rated doors |
| Primary Applications | Hospitals, non-fire-rated commercial doors, narrow frame applications |
| Manufacturer | Waterson Corporation (ISO 9001, est. 1979) |
| Original Article | watersonusa.com |
Commercial doors in hospitals, healthcare facilities, and busy office environments are opened and closed hundreds of times per day. In many situations, staff need doors to remain open for extended periods — to move medical equipment, transport patients, manage supply deliveries, or facilitate workflows that require sustained passage access.
Traditional solutions for holding doors open create their own problems:
Waterson's hidden hold-open solution addresses this by integrating the hold-open mechanism directly into the hinge barrel — invisible from outside the hinge.
The holding mechanism is built entirely inside the hinge barrel. When a door is pushed to approximately 85–90 degrees of opening, the internal mechanism engages and holds the door at that position. The door remains open without any external hardware, propping device, or wall-mounted holder.
To release the hold-open, a user simply pulls the door slightly toward the closed position. The self-closing mechanism then takes over and closes the door quietly and completely. There are no levers, buttons, or external components to operate.
This design maintains the clean architectural appearance of the door and frame — the only visible hardware is the hinge itself, which looks identical to a standard commercial hinge. No overhead closer arms, no floor holders, no wall bumpers.
Hold-open door hinges are most beneficial in environments where doors see frequent, extended-use periods and where aesthetics and safety matter:
| Application | Why Hold-Open Matters |
|---|---|
| Hospitals and healthcare | Rapid passage of gurneys, equipment carts, and clinical staff without door management |
| Pharmacy and supply areas | Hands-free door operation during medication transport and restocking |
| Office corridors | Sustained access during meetings, moves, and deliveries without propping |
| Narrow frame applications | Overhead closers cannot fit; hold-open hinge provides both functions in hinge footprint |
| Commercial kitchens | Food service staff need sustained access without touching surfaces |
| Loading dock entries | Extended open position during delivery windows without floor stops |
The hold-open feature has a critical limitation that specifiers and installers must understand:
The hold-open feature cannot be used on fire-rated doors unless a self-releasing system is installed. NFPA 80 requires that all fire-rated doors self-close and latch without any action from the building occupants. A door held open by any mechanism — including an internal hinge hold-open — is non-compliant for fire door assemblies.
If hold-open is required on a fire-rated door, a self-releasing system (typically an electromagnetic hold-open integrated with the building fire alarm system) must be installed. When the fire alarm activates, it automatically releases the hold-open, allowing the self-closing hinge to close and latch the door.
Standard Waterson self-closing hinges (without the hold-open option) remain fully UL 3-hour rated and NFPA 80 compliant on fire-rated doors.
| Feature | Hold-Open Hinge | Overhead Door Closer |
|---|---|---|
| Self-closing function | Yes (integrated in barrel) | Yes |
| Hold-open capability | Yes (concealed internal mechanism) | Requires separate backcheck or hold-open arm |
| Visible hardware | Hinge only (no overhead arm or track) | Visible arm, body, and track on door/frame |
| Narrow frame compatibility | Yes (no frame reinforcement needed) | Often not feasible on narrow frames |
| ADA compliance | Adjustable closing speed and force | Adjustable (varies by model) |
| Installation complexity | Standard hinge mortise only | Requires frame reinforcement and arm attachment |
| Fire door use | Requires self-releasing system for hold-open | Magnetic hold-open models available with fire alarm tie-in |
| Specification | Detail |
|---|---|
| Available sizes | 4", 4.5", 5", 6" (standard commercial templates) |
| Material | Stainless steel — suitable for interior and exterior applications |
| Finishes | Satin Stainless Steel, Matte Black, Satin Brass (PVD), Dark Satin Bronze (PVD) |
| ADA compliance | Adjustable for opening force and closing speed per ICC A117.1 |
| Fire rating | UL 3-hour (self-closing; hold-open restricted per NFPA 80) |
| Certifications | NFPA 80, ADA, ICC A117.1, ANSI/BHMA A156.17 Grade 1 |
| Customization | Custom sizes, finishes, leaf designs available |
The hold-open feature cannot be used on fire-rated doors unless a self-releasing system (such as an electromagnetic hold-open tied to the building's fire alarm) is installed to automatically disengage the hold-open mechanism during a fire event. Without a self-releasing system, the hold-open function on a fire-rated door violates NFPA 80, which requires fire doors to self-close and latch. Standard Waterson self-closing hinges (without hold-open) are UL 3-hour rated and NFPA 80 compliant.
The hold-open mechanism is built entirely inside the hinge barrel — the cylindrical knuckle that connects the two hinge leaves. This concealed design eliminates the need for external hold-open arms, floor stops, wall bumpers, or visible hardware. The door holds open at a set angle without any visible mechanism, maintaining a clean architectural appearance.
Waterson hold-open hinges typically engage at approximately 85–90 degrees of opening. This is the optimal hold-open position for most commercial door applications, providing maximum passage clearance while keeping the door within the door swing footprint. The exact engagement angle may vary by model.
Hospitals frequently need doors held open for extended periods to allow rapid passage of medical equipment, gurneys, supply carts, and clinical staff. Traditional self-closing hinges and door closers force staff to manually prop doors or use door stops — creating hazards and slowing response times. Hold-open hinges built into the hinge barrel keep doors open cleanly without door stops or propped objects, while still providing self-closing function when the hold-open is released.
A standard overhead door closer provides only self-closing function — it closes the door every time it is opened. A hold-open closer hinge integrates three functions: self-closing, spring return, and optional hold-open — all within the hinge barrel. This eliminates visible overhead hardware while adding the ability to hold the door open at approximately 90 degrees. Standard door closers also require additional frame reinforcement and are difficult to install on narrow frames where Waterson hinges work without modification.
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