One door closer body for all applications Adjustable spring power allows 281 closers a size range of 1 through 6. They are adjusted to size 3 before leaving the factory Standard pressure relief valves for both opening and closing cycles protect the closer seals and all hardware from excessive force Heavy duty mounting bracket for easy installation of full size iron closer Retrofits existing Sargent 250 and 1250 Series Closer installations High impact non-corrosive plastic covers standard Cover secured by machine screws 1-1/2" diameter piston for superior door control Heavy Duty Construction Heat treated full rack and pinion for high strength & 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 Machine screws and self tapping screws provided for closer and arm In addition, wood screws supplied when installed on wood doors without through bolts Standard parallel arm Forged Steel Arm 11-1/4" (286mm) long Permits 120 door opening with standard mounting Permits 180 door opening with alternate mounting or corner bracket Heavy duty forged steel arms are finely finished and interchangeable between SARGENT 281 and 1431, 250, 1250, and 351 series 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 Finishes: EN Sprayed Aluminum Enamel (BHMA 689), EB Sprayed Bronze Enamel to match 10B (BHMA 690), EP Sprayed Bronze Enamel to match 10 (BHMA 691) and EAB Sprayed Brass Enamel (BHMA 696)
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