Waterson SS Heavy Duty Multi Function Door Closer and Spring Hinge Sets

Waterson's commercial door hinges exude both durability and versatility, making them ideal for high-traffic areas and fire-rated doors. With full adjustability, these hinges offer impeccable control over closing speed and backcheck, guaranteeing seamless operation. Crafted from premium materials, these hinges are designed to withstand frequent use and adhere to all ADA regulations for speed, force, and clearance.

• Sold by the set, which includes 3 hinges.
• Mfg part number series K51M.
• Self-Closing door hinge.
• Designed for butt or mortise mounting.
• Works like a hydraulic door closer without extrusive arms.
• Good self-closing solution for arched doors. 
• Doesn't slam shut like a typical spring-loaded hinge.
• Adjustable closing force.
• Adjustable closing speed, up to 5 seconds to meet ADA requirements.
• Some models offer a hold-open feature. 
• Allows for less torsion on tall doors while maintaining aesthetic.
• ADA clearance compliant.
• ADA-5lbs low force compliant.
• Commercial 3hr fire rated, UL Listed.
• ANSI/BHMA A 156.17 Grade 1
• Passed 1 million testing cycles.

Purely Mechanical vs Hydraulic Hybrid

• Purely Mechanical hinges are self-closing hinges that are good for use on high-frequency heavier doors, like hotel rooms, fire-rated doors, arch-top doors. Due to the constant braking force of the hinge, your heavy commercial doors will close at a controlled speed every time. You should let the door close on its own without any additional hand force to avoid accelerated closing speed. 
  
• On the other hand, Hydraulic Hybrid hinges are soft-closing hinges ideal for quiet closing applications. They are ideal for breezy environments due to their oil-controlled dynamic braking system.
• What is the main difference between a hydraulic hybrid set and a pure mechanical set? In most cases, either option will work just fine. Both are self-closing door hinges with adjustable speeds and controlled mechanisms. In windy conditions, the mechanical system operates at a fixed speed and cannot adapt to changing wind speeds. In contrast, the hydraulic hybrid system adjusts dynamically, ensuring better performance across varying wind conditions. 

4" x 4" Size Door Specs

• Designed for 1-3/8" thick doors that are no larger than 7 feet tall and 4 feet wide
• Minimum door weight is 60 lbs.
• Maximum door weight is 260 lbs.

4.5" x 4.5" Size Door Specs

• Designed for 1-3/4" thick doors that are no larger than 7 feet tall and 4 feet wide
• Minimum door weight is 60 lbs.
• Maximum door weight is 260 lbs.

5" x 5" Size Door Specs

• Designed for 1-3/4" to 2-1/4" thick doors that are no larger than 7 feet tall and 4 feet wide
• Minimum door weight is 60 lbs.
• Maximum door weight is 260 lbs.

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