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Imported from USA.
8900 SERIES HEAVY-DUTY SURFACE CLOSERS Versatile durable and reliable featuring modern styling for institutional or
high-traffic commercial applications. DORMA'S 8900 Series Grade 1 hydraulic surface closers are housed in
corrosion-resistant aluminum with a hardened pinion/piston providing toughness and high-strength. The arm hub is made
from forged steel. Standard on the 8900 Series closers are backcheck positioning with two adjustment valves adjustable
spring sizes from 1-6. Independently certified to 10 million the 8900 Series closers are ideal for a variety of
heavy-duty as well as barrier-free applications. Technical Details - Available as 8916 with fully adjustable spring
sizes 1-6. Size 1 (5 lb opening force) meets interior barrier-free AD requirements. - 8916 may be used on doors up to 48
wide interior (42 wide exterior) and up to 180 lb. - 8956 available with adjustable spring sizes of 5-6 50Percent for
use on exceptionally wide tall or heavy doors. - Non-handed for regular top jamb and parallel arm applications. -
Backcheck (BC) valve (standard) provides adjustableintensity hydraulic cushioning preventing uncontrolled door opening
to protect door and frame during abusive or abrupt opening. - POS backcheck positioning valve (standard) maintains an
effective backcheck range on parallel arm applications. Valve is accessible with the closer installed. - Full adjustment
using BC POS Sweep and Latch valves standard. - Optional delayed action (DA) adjustable with separate independent valve
to allow for unobstructed passage through opening. - Full plastic cover standard. Full metal or full plastic slotted
covers optional. - All tamper-resistant (hex key) valve adjustments (including POS) accessible with closer installed. -
Standard components required for three most popular mounting configurations (Reg. TJ PA). - Standard fasteners include
separate wood and metal screws and SN1 sex nuts for 1-3/4 thick doors. - Full-sized templates enable accurate