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Sargent 351 POTB Powerglide® Door Closer | Push Side Track Arm with Bumper
The Sargent 351 POTB Door Closer is an architectural-grade, heavy-duty solution designed for high-traffic commercial and institutional environments. Part of the industry-leading Powerglide® series, the 351 POTB features a Push Side Track Arm with an integrated Track Bumper. This low-profile track system eliminates the traditional projecting arm "elbow," providing a sleek aesthetic and enhanced resistance to vandalism. The integrated bumper assists the hydraulic backcheck by cushioning the door near its maximum opening angle, protecting the door and frame from damage during forceful opening cycles.
Forged from a specialized 14% silicon aluminum alloy, the one-piece die-cast body offers superior strength and wear resistance, engineered to exceed 25 million cycles. With adjustable spring power from Size 1 to 6, this non-handed closer is a versatile solution for interior doors up to 5'0" wide. Please note that while track arms offer a modern look, Push Side Track applications generally require higher opening forces and may not meet ADA requirements.
Advanced Engineering & Performance Features
- Integrated Track Bumper: The POTB track includes a specialized bumper that mounts within the extruded aluminum track to assist backcheck. It is designed to cushion the opening swing but requires an auxiliary floor or wall stop.
- High-Impact Construction: Features a 1-1/2" diameter piston for superior door control and a heat-treated full closed rack and pinion for precision hydraulic regulation.
- Precision Control Valves: Separate, low-sensitivity brass valves allow for independent regulation of closing speed, latching speed, and backcheck intensity.
- All-Weather Reliability: Pre-filled with all-weather hydraulic fluid, ensuring consistent operation in extreme temperatures ranging from winter cold to summer heat without the need for seasonal adjustments.
- Tamper-Resistant Hardware: All adjustment valves are controlled by an 1/8" Allen wrench and are captivated within the body to prevent accidental removal or vandalism.
Technical Specifications
| Feature | Details |
| Manufacturer | Sargent (ASSA ABLOY) |
| Model Number | 351 POTB (Push Side Track with Bumper) |
| Certification | ANSI/BHMA A156.4 Grade 1 |
| Arm Type | Forged Steel Arm with Extruded Aluminum Track |
| Spring Power | Adjustable Size 1 through 6 (Factory set to 3) |
| Max Door Opening | 95° with bumper track (100° standard) |
| Min Top Rail | 5-3/4" (standard); 3" with 351-D Drop Plate |
| Body Material | 14% Silicon Aluminum Alloy |
| Warranty | 25-Year Limited Mechanical Warranty |
Installation & Finish Options
The Sargent 351 POTB is designed for Push Side Mounting, where the track mounts directly to the frame stop. The package includes self-sticking templates and all necessary fasteners. For installations on wood or mineral core doors, it is highly recommended to use the included Sargent thru bolts to ensure a rigid, long-lasting attachment.
- Architectural Finishes: Available at DoorwaysPlus.com in high-durability enamel: Aluminum (EN), Dark Bronze (EB), and Brass (EAB). Additional powder-coated (ED, EP) and plated finishes are optional.
- MicroShield® Technology: Available with an optional antimicrobial silver-based finish that permanently suppresses the growth of bacteria, algae, and mold.
- Hold Open Option: An optional Holder (Sargent 351 PHTB) can be mounted within the track to provide a hold-open range of 85° to 95°.
| General - US Finishes | EN - Aluminum Enamel or EAB - Spray Gold or EB - Bronze Enamel |
| Brand | Sargent |
| Series | Sargent - 351 Series |
| Closer Arm Type | Track Arm |
| Hold Open | Non-Hold Open |
| Closer Body Hole Pattern | 9" x 2 1/2" |
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