Sargent 281 Series

General Information

1. ► Closer Spring Adjustment (not shown):

• Affects the entire cycle of the door closer movement.
• Used to size closer for application requirements.
• Determines the amount of force with which the door closes and the amount of force required to open the door.
• Adjustable to compensate for door size and draft conditions.

2. ► Backcheck Valve:

• At approximately 70° of the open cycle, the backcheck valve begins to slow the door’s motion.
• Prevents the door from slamming into the door’s stop.
• Valve is used to control the intensity of the backcheck.
• Note: a positive stop is required, backcheck cannot be used as a stop.

3. ► Delayed Action Valve (optional):

• Holds the door in the open position momentarily.
• 20 second minimum hold open delay.
• The feature is available for all applications and arms.
• Beneficial when moving carts or objects thru door opening and ADA applications.

4. ► Closing Speed Valve:

• Controls how fast the door closes to approximately 8” from the closed position.

5. ► Latching Speed Valve:

• Controls the speed of the door during the final 8" of door swing.
• The force the door closes with is controlled by the closer spring.
• Note: This adjustment is critical for door latching.

Features and Benefits

• Exceeds 10 million cycles.
• Certified ANSI/BHMA A156.4 Grade 1.
• Conforms to UL10C and UBC for positive pressure fire test.
• UL Listed and cUL Listed to Canadian Safety Standards listed for use on fire doors.
• 25 year limited warranty.
• User friendly versatile mounting applications permit standard, top jamb, parallel and track installations.
• Self sticking templates supplied for most applications.
• Adjustable spring power allows 281 closers a size range of 1 through 6. They are adjusted to size 3 before leaving the factory.
• Non-handed door closer body for all applications.
• Meets ADA requirements in all applications, except Push Side Track application (except track).
• High impact non-corrosive plastic covers with two machine screws standard, aBS covers, metal covers and lead lined are optional.
• All weather fluid allows closer to operate effectively in extreme temperatures without readjustment.
• 1-1/2" diameter piston for superior door control.
• Standard pressure relief valves for both opening and closing cycles protect the door and frame from damage caused by abuse.
• Heavy duty mounting bracket for easy installation of full size iron closer.
• Retrofits existing SARGENT 250 and 1250 Series Closer installations.
• The Advanced Backcheck (ABC) option begins to slow the door down at approximately 15° sooner than standard backcheck in the open cycle. The (ABC) option is used when the door needs to slow down earlier than the standard back check of 70°.

Heavy Duty Construction:

• Heat treated full rack and pinion for high strength and wear resistance.
• Heavy duty one piece cast iron body provides superior strength and wear resistance.
• 1/2" arm engagement over a 7/16 square spindle ensures a wear-resistant tight joint.

Fasteners:

• Machine Screws and self tapping screws provided for closer and arm.
• In addition, wood screws supplied when installed on wood doors without through bolts.

Full Complement of Arm Types:

• Standard and parallel arms.
• Push and pull track arms.
• Security track.
• Security parallel arm.
• Heavy duty forged steel arms are finely finished and interchangeable between SargenT 281 and 1431, 250, 1250 and 351 Series.

Valves:

• Separate brass low sensitivity control valves offer ability to separately regulate door speed, latching, backcheck and optional delayed action.
• All valves are captured to prevent accidental removal, adjustable with an 1/8" allen wrench.
• Adjustable backcheck protects the door and hardware from damage during the opening cycle. not to be used in lieu of a door stop.
• Adjustable delayed action (optional) permits easy access for physically impaired individuals.

Innovation:

• SARGENT’s revolutionary MicroShield® available. This antimicrobial silver-based finish coating permanently suppresses the growth of bacteria, algae, fungus, mold and mildew. ePa and nSF approved and FDa listed.

Special Rust Inhibitor Process (SRI):

• Additional process available for bracket and arms provides an extra layer of protection for extreme corrosive environments.
• Available with powder coated finishes only; specify SRI- as an option when ordering.

Standard Applications

The standard application of the 281 door closer is the most common, providing a high degree of door control and range of power adjustment. The closer is mounted on the pull side of the door with the arm mounted on the face of the frame. When the door opens, the arm passes over the top of the door.

Parallel Arm Applications

The 281 closer is mounted on the push side of the door. As the door opens, the closer swings with the door and gives full headroom in the door opening. Other advantages are that the closer arm does not project into the room, the frame can be quite narrow and the door can be swung open much further than in top jamb applications. However, the closing force is not as great.

Top Jamb Applications

The 281 closer is mounted on the frame face above the door. The foot is mounted on the push side of door. This application is for use on exterior doors opening out to protect the closer from the weather. The frame face must be at least 4-3/8". With the 281-B mounting plate, the rail must be at least 1-7/16" min.

Track Type Applications

281 Track Type application offers a number of options such as built in bumpers and holders. Along with its clean appearance, it is a favorite for many interior designers. It has the versatility of being mounted on either side of a door for a clean unobstructed appearance, without the cost of concealed closers and tracks.

Fire Rating Note: Any retrofit or other field modification to a fire rated opening can potentially impact the fire rating of the opening, and Sargent Manufacturing Company makes no representations or warranties concerning what such impact may be in any specific situation. When retrofitting any portion of an existing fire rated opening, or specifying and installing a new fire-rated opening, please consult with Penner to ensure compliance with all applicable codes and rating.