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Sargent 351 UH Powerglide® Door Closer | Universal Friction Hold Open Arm
The Sargent 351 UH Door Closer is a heavy-duty, Grade 1 certified hydraulic closer designed for maximum versatility in high-traffic commercial and institutional settings. As the flagship of the Powerglide® 351 series, the 351 UH features a Universal Friction Hold Open Arm, allowing the door to be secured in an open position at a user-defined angle. This "one-box" solution is engineered for Regular, Top Jamb, or Parallel Arm mounting, providing contractors and facility managers with ultimate flexibility for any installation requirement.
Forged from a specialized 14% silicon aluminum alloy, the one-piece body offers industry-leading strength and wear resistance. With a heat-treated full closed rack and pinion, the 351 UH delivers smooth, precise door control throughout the entire opening and closing cycle. It is pre-filled with all-weather hydraulic fluid, ensuring consistent performance in extreme temperatures without the need for seasonal valve adjustments.
Professional Commercial Features
- Universal Hold Open Versatility: The UH friction arm allows for easy engagement and disengagement, holding the door open at any angle—ideal for high-traffic transition periods or moving equipment.
- Three Mounting Applications: Includes all necessary brackets and fasteners for Regular Arm (pull side), Top Jamb (push side), and Parallel Arm (push side) mounting.
- Precision Hydraulic Control: Features separate, low-sensitivity brass valves for independent regulation of closing speed, latching speed, and backcheck intensity.
- Tamper-Resistant Engineering: All adjustment valves are controlled by an 1/8" Allen wrench and are captivated to prevent accidental removal or vandalism.
- Fire Safety & Code Compliance: UL/cUL listed for use on fire-rated doors (up to 3 hours) and compliant with UL10C and UBC 7-2 positive pressure standards.
- ADA Accessible: Adjustable spring power from Size 1 to 6 allows the closer to be tuned to meet strict barrier-free accessibility requirements.
Technical Specifications
| Feature | Details |
| Manufacturer | Sargent (ASSA ABLOY) |
| Model Number | 351 UH (Powerglide® Series) |
| Certification | ANSI/BHMA Grade 1 (A156.4) |
| Arm Type | Universal Friction Hold Open |
| Spring Power | Adjustable Size 1 through 6 (Factory set to 3) |
| Body Material | 14% Silicon Aluminum Alloy |
| Piston Diameter | 1-1/2" for Industrial-Strength Control |
| Handing | Non-Handed (Field Reversible) |
| Warranty | 25-Year Limited Mechanical Warranty |
Architectural Compatibility & Innovation
The Sargent 351 UH is built to exceed 25 million cycles, making it one of the most durable closers on the market. For environments where hygiene is a priority, such as hospitals or laboratories, it is available with the MicroShield® antimicrobial coating, which permanently suppresses the growth of bacteria and mold. The unit comes standard with a high-impact, non-corrosive plastic cover, though optional metal and lead-lined covers are available for specialized security or medical imaging rooms.
| General - US Finishes | EN - Aluminum Enamel or EAB - Spray Gold or EB - Bronze Enamel |
| Brand | Sargent |
| Series | Sargent - 351 Series |
| Closer Arm Type | Hold Open - Friction |
| Hold Open | Hold Open |
| Closer Body Hole Pattern | 9" x 2 1/2" |
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