Optional Features
ㆍ Delayed action
ㆍ Metal cover (Handed)
ㆍ Option Arm: CUSH / HCUSH / EDA / HEDA
COMPLIANCE STANDARD
ㆍ ANSI/BHMA A156.4, Grade1 certified
ㆍ UL listed
ㆍ ADA compliant (BF-6)
Cross Reference
| Company | CAL ROYAL | DORMA | DOR-O-MATIC | HAGER | K2 | LCN | NORTON | PDQ | SARGENT |
| Model | 801S | 8616 | SC80 | 5200 | D-3550 | 1460 | 8301 | 5300 | 1430 |
STANDARD FEATURES
ㆍCast Iron Body
Closer bodies are constructed of high grade cast iron that can stand up to the constant use and abuse.
ㆍRack & Pinion Operation
Provides a smooth constant control of the door through its full opening and closing cycle. 180˚.door swing can be achieved when door, frame, hardware and arm function do not interfere
ㆍNon-handed
With few exceptions all NK5051 Series door closers are non-handed and can be installed on either right or left hand swing doors. Pinion shaft extends vertically through the closer body in both directions.
ㆍSweep Speed Control Valve
Allows adjustment of door speed from the door’s full open position down to approximately 10˚ from the closed position.
ㆍLatch Speed Control Valve
Allows adjustment of door speed from approximately 10˚ down to the door's fully closed position.
ㆍTri-Packed
NK5051 Series come with screws, brackets and soffit plates to allow for regular, top jamb, and parallel arm installations
ㆍAdjustable Back-check Valve
Provides control of the door in the opening cycle, beginning at approximately 75˚ of door opening. it cushions the door opening when the door is forcibly opened beyond its pre-adjusted limits.
ㆍMolded Cover
Molded high impact material. These covers are non-handed for all applications.
ㆍMulti-Sized Door Closer
Adjustable through the power range of sizes BF - 6.
NK5051 (BF-6) also confirms to the BF opening force requirements of the A.D.A and ANSI/BHMA standard A117.1 for interior doors.
COMPLIANCE
ㆍ ANSI/BMHA A156.4, Grade 1 certified
ㆍ UL /cUL listed
ㆍ UL10C listed for positive pressure fire test
ㆍ NK5051 (BF-6) model is designed to comply with requirements for the Americans with Disability Act (A.D.A) and ANSI standard A117.1
DELAYED ACTION
ㆍAdjustable Delayed Action Closing
An optional hydraulic feature that add a third speed range to closing cycle. This feature becomes effective when the door is opened and released at any point beyond 70˚. The amount of time delay depends upon the combination of the angle of door released and valve adjustment. The valve can be adjusted with 4mm hex key from no delay time up to maximum delay times of :
| Door opened | Approximate Time of Delay Cycle |
| 180˚ | 4~5 minutes |
| 120˚ | 2~3 minutes |
| 90˚ | 25~30 seconds |
