Page 23 - Herrajes Patricios - Cierrapuertas Stanley

General Information

Non-handed feature is available in a variety of finishes wide range of spring power adjustment. Standard packaging with tri-pack: regular,
top-jamb and parallel arm arrangement. Can be ordered with heavy duty arm assembly. ANSI/BHMA A156.4 Grade 1, U.L. listed U.S. &
Canada. The cylinder body is made from R-14 die cast aluminum. This alloy provides wear resistance from contact with the piston during
the opening and closing cycle. R-14 wear characteristics are similar to that of cast iron. In addition the R-14 aluminum alloy holds the
cylinder body dimensionally stable under extreme internal hydraulic pressures.

“R-14 high silicon aluminum alloy construction” –
Remains dimensionally stable under extreme internal hydraulic
pressure. Provides maximum wear resistance from opening and
closing cycle.
Delayed
Back action (Optional)
check

Non-critical regulation General
The separate adjustments speed
for backcheck, general and latch
speeds are equipped with non-
critical “V-Slot” regulating valves
which allow for fine tuning the
closing and latching speeds as well
as the back check intensity.
Latch
speed

Non-handed Cut-away D-4550
cylinder body

Non-handed

Piston body – cold forged heavy steel
construction (1 1/2” dia.)

Internal springs –
Wide range spring power adjustment.
Size 2 – 6 with 50% spring power adjustment over size 6.
Meets ADA 5lb opening force requirements on all application
except pull-side regular arm mount. Pinion shaft – cold forged
construction (5/8” 13 teeth)

D-4550/D-4551 Series Door Closers 3