alternative for quiet door closer

The table below is the typical options for Waterson Closer Hinges. Many people are curious about the difference between Self-closing (K51M-450-A3) and Fluid Motion (K51M-450-B3). Here are some more detailed explanations.

Door InfoFull mortise

4.5×4.5

Self-closingFluid Motion*Hold-open
1-3/4″

< 7’0 x 4’0

≤ 260 lbs

K51M-450-A3
K51M-450-B3
K51M-450-C3
K51M-450-D3

*Fluid motion only works when the door opens ≤ 120° and temperature is above 0° area. 

The table below is the typical options for Waterson Closer Hinges. Many people are curious about the difference between K51M-450-A3 and K51M-450-B3. Here are some more detailed explanations.

Mechanical Only = Self-Closing

Waterson pure mechanical hinges are ideal for high frequency use heavy doors. State-of-the-art heat treated carbide components and EN-certified springs ensure durability, effectiveness and longevity.  Your heavy duty commercial doors will close effectively at a controlled speed every time.

Hydraulic Hybrid = Self-Closing + Fluid Motion

On the other hand, if quiet is a chief concern then you may want to consider choosing the Waterson hydraulic hybrid self-closing hinge due to oil-controlled dynamic braking. Also an effective closing component, particularly in breezy environments, Waterson hydraulic hinges respond well to wind changes with exceptional quietness without leaking.

The video below tells a better story than just words. Check it out.

MODELDOOR TYPEUSAGE
Self-Closing

= Mechanical Only

  • Hotel Room 
  • Fire-rated 
  • Fully Exterior  
  • Arch Top 
  • Heavy Duty
  • Courtyard Style
  • Heavy Latch
  • High Frequency
  • Long-term Use
  • Variable Temperatures
  • Harsh Environments*
Self-Closing +
Fluid Motion= Hydraulic Hybrid
  • Offices
  • Frameless Glass 
  • French Style 
  • Courtroom Gate
  • Quiet Areas
  • Breezy Environments 

*ie.  acid, chemical, clean room, chlorinated pools, salt water areas and more

What’s the Difference?

The difference between the two types defines how your door closes:

  • Mechanical type: self-closing; closing speed remains mostly average from swing to latch.
  • Hydraulic type:soft closing; the door specifically slows down in the hydraulic zone.
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