Commercial Self-closing Hinge

Commercial self-closing hinges need to handle the daily rigors of frequent use.  Waterson hinges are designed to manage commercial closing demands, while maintaining fluid and efficient motion.  A typical 7’0 door utilizes three active Waterson Closer Hinges to create a perfect, self-closing system. Each hinge’s unique digital panel allows the spring tensions to adjust precisely according to door weight and environmental conditions.  Additionally, Waterson hinges meet all ADA codes concerning speed control, force, and clearance.

Automatic fire door closers-K51M

Looking For A Solution?

keep privacy

Private space

keep bugs outside

Keep bugs outside

easy to open

Easy to open 

Installation tips

Mortise on both door and frame for optimal installation.
Make sure door and frame are well aligned and not sagging or tilted.

Fire door closers-hinge installation tips-1
  • Non-mortise: Preserve 10 mm distance between door edge and jamb
  • Mortise: Preserve 3-4 mm distance between door edge and jamb
Info of K51M -2
  • Mortise installation: Mortise prepared by door suppliers
Gate door-fire door closers
Interior doors-fire door closers
Metal frame door-fire door closers
Office metal frame door-fire door closers

Comparison With Door Closer

Waterson Self-closing hingeTraditional door closer
Position
On door and easy as regular hinges
On door and need to preserve installation space
Aesthetics
Elegant and minimized visual intrusion
Bulky and maximized visual intrusion
Opening
Effortless
Strenuous
Outdoor
Yes, High Weather resistance
Yes and easily broken
Fire resistanceYesYes
Durability
1 million cycle test passed
Mostly 20 thousand cycles depending on brands
CostHardware+ Installation+ Maintenance

Low total cost

Hardware+ Installation+ Maintenance

High total cost

Waterson Self Closing Hinge V.S. Door Closer

UL And SGS Test Report

UL cert _Waterson Hinge USA
SGS-TEST REPORT1

Specification and Combination –

How To Choose?

US STANDARD 

1. Specification

ModelDIM (H x W)RadiusGaugeFinish
K51M-4004″ x 4″

Square

1/4R

5/8R

0.13″ /3.3MMSatin Brushed

Polished

Golden

Black

K51M-4504-1/2″ x 4-1/2″ 0.13″ / 3.3MM
K51M-5005″ x 5″ 0.146″ / 3.71MM
K51M-500D5″ x 5″0.190″ / 4.83MM
K51M-6606″ x 6″0.16″ / 4.06MM

2. Combination

Data and featuresCombinationK51M 3 Hinges SeriesK51M 4 Hinges Series
SA-SA-SA1DS-HA-SA1SB-SA-SA1DS-HA-SBDS-SA-SA1SA-SA-SA1-SA1DS-HA-SA-SA1DS-SA-SA-SA1
Hinge quantity33333444
Door Weight< 260 pounds< 260 pounds< 260 pounds< 150 pounds< 330 pounds< 330 pounds< 330 pounds< 440 pounds
Door Height< 7 feet< 7 feet< 7 feet< 7 feet< 7 feet< 8 feet< 8 feet< 8 feet
Door Width< 4 feet< 4 feet< 4 feet< 4 feet< 4 feet< 4 feet< 4 feet< 4 feet
Non-handed
Closing force variable at adjustment at digital panel
Closing speed variable at adjustment by adjustment screw
Closing speed variable at adjustment by valve adjustment (Hydraulic Hybrid)
Hold-open
 Application Suggestion
Hotel guest room door (With Heavy Latch)
Office quiet zone place (Electrical Latch or Light Latch)
Environment with miner breeze
Room with no window
Exterior use
● YES ○Option ⁃ No
1. Waterson closer hinge not support the “Backcheck” and “Delayed action” for all closing hinge series
2. All dimensions is compatible with BHMA stand

US STANDARD 

1. Specification

ModelDIM (H x W)RadiusGaugeFinish
K51M-4004″ x 4″

Square

1/4R

5/8R

0.13″ /3.3MMSatin Brushed

Polished

Golden

Black

K51M-4504-1/2″ x 4-1/2″ 0.13″ / 3.3MM
K51M-5005″ x 5″ 0.146″ / 3.71MM
K51M-500D5″ x 5″0.190″ / 4.83MM
K51M-6606″ x 6″0.16″ / 4.06MM

2. Combination

Data and featuresCombinationK51M 3 Hinges SeriesK51M 4 Hinges Series
SA-SA-SA1DS-HA-SA1SB-SA-SA1DS-HA-SBDS-SA-SA1SA-SA-SA1-SA1DS-HA-SA-SA1DS-SA-SA-SA1
Hinge quantity33333444
Door Weight< 260 pounds< 260 pounds< 260 pounds< 150 pounds< 330 pounds< 330 pounds< 330 pounds< 440 pounds
Door Height< 7 feet< 7 feet< 7 feet< 7 feet< 7 feet< 8 feet< 8 feet< 8 feet
Door Width< 4 feet< 4 feet< 4 feet< 4 feet< 4 feet< 4 feet< 4 feet< 4 feet
Non-handed
Closing force variable at adjustment at digital panel
Closing speed variable at adjustment by adjustment screw
Closing speed variable at adjustment by valve adjustment (Hydraulic Hybrid)
Hold-open
 Application Suggestion
Hotel guest room door (With Heavy Latch)
Office quiet zone place (Electrical Latch or Light Latch)
Environment with miner breeze
Room with no window
Exterior use
● YES ○Option ⁃ No
1. Waterson closer hinge not support the “Backcheck” and “Delayed action” for all closing hinge series
2. All dimensions is compatible with BHMA stand

OTHER COUNTRIES

ModelDIMDoor ThicknessGaugeFinishDoor Spec
Self-closing Combination
Self-closing & Hold-open Combination
K51M-6406″ x 4″ (H*W)35-45 mm4.1 mmSatin Brushed

Polished

Golden

Black

≤ 70kg
<1800 x 1250 mm
 ( DS, HA ) = ( Top, Bottom)
( SA, SA1 ) =( Top, Bottom)
( SB, HS ) = ( Top, Bottom)
K51M-6456″ x 4.5″ (H*W)40-50 mm
K51M-6506″ x 5″ (H*W)45-55 mm≤ 120kg
<2200 x 1250 mm
( DS, HA, SA1 ) = (Top, Middle, Bottom)
( SA, SA, SA1 ) = (Top, Middle, Bottom)
 ( SB, SA, HS ) = (Top, Middle, Bottom)
( SB, SA, SA1 ) = (Top, Middle, Bottom)
K51M-6556″ x 5.5″ (H*W)50-60 mm
K51M-6606″ x 6″ (H*W)55-65 mm

OTHER COUNTRIES

ModelDIMDoor ThicknessGaugeFinishDoor Spec
Self-closing Combination
Self-closing & Hold-open Combination
K51M-6406″ x 4″ (H*W)35-45 mm4.1 mmSatin Brushed

Polished

Golden

Black

≤ 70kg
<1800 x 1250 mm
 ( DS, HA ) = ( Top, Bottom)
( SA, SA1 ) =( Top, Bottom)
( SB, HS ) = ( Top, Bottom)
K51M-6456″ x 4.5″ (H*W)40-50 mm
K51M-6506″ x 5″ (H*W)45-55 mm≤ 120kg
<2200 x 1250 mm
( DS, HA, SA1 ) = (Top, Middle, Bottom)
( SA, SA, SA1 ) = (Top, Middle, Bottom)
 ( SB, SA, HS ) = (Top, Middle, Bottom)
( SB, SA, SA1 ) = (Top, Middle, Bottom)
K51M-6556″ x 5.5″ (H*W)50-60 mm
K51M-6606″ x 6″ (H*W)55-65 mm

Catalog

US AREA
Non-US Area

Specification

US Area
Non-US Area

Templates

K51M-400
K51M-450
K51M-500
K51M-500D
K51M-660-US
K51M-640
K51M-645
K51M-650
K51M-655
K51M-660

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