Introduction
The model D4550 Series is Stanley’s best performing Heavy
Duty Closer. The cylinder body is manufactured using
R-14 Silicon Aluminum Alloy providing superior strength and
durability on institutional applications. Available in a variety of
standard and heavy-duty arm configurations accommodating
a broader range of today’s growing architectural application
requirements.
Features Fully Hydraulic Checking
Controls the door through the entire opening and closing
cycles by providing adjustable backcheck upon opening and
adjusting general and latch speeds through the closing cycle.
(1) opening swing, no checking
(2) backcheck
(3) general speed
(4) latch speed
Delayed Action - Optional
The D-4550DA / D-4551DA Series Door Closers are equiped
with a seperate hydraulic valve adjustment to delay the closing
speed from 180 to 70 degrees of door opening range.
Non-Handed
Can be used on both RH and LH doors for both push side and
pull side mounting.
Adjustable Spring Power
The D-4550 Series Door Closers are adjustable from size 1
through 6 with more than 50% adjustment over size 6. The
D-4551 Series Door Closers are adjustable from size 1 through
4 more than 20% adjustment over size 4. The D-4551 Series
Door Closers are designed to meet entrance accessibility
requirements of 5LBF opening force or less.
Non-Critical Regulation
The separate adjustments 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 backcheck intensity.
All Season Fluid
All season fluid eliminates the need for seasonal adjustment.
Special High Silicon Aluminum Alloy Housing
All D-4550 / D-4551 Series Door Closers are constructed of
RYOBI’S R14 HIGH SILICON ALUMINUM ALLOY to exceed
the ANSI/BHMA A156.4 Grade 1 requirements.
Forged Arms
Heavy duty forged arms are interchangeable between the
D-4550 and D-3550 Series Door Closers.
High Impact Cover
All D-4550 / D-4551 Series Door Closers are shipped with a
high impact self-extinguishing decorative cover.
Metal Cover - Optional
An optional stainless steel, brushed finish metal cover is
available.
Maintenance Free
Door Closers mounted in accordance with the provided
installation instructions are maintenance free from periodic
inspection and adjustment.
Handing
Closing Power Adjustment
D-4550* – Size 2 – 6 with 50% with
spring power adjustment over size
6. * Meets ADA 5lb opening force
requirements on all applications
except Pull-Side Regular Arm
Mount. The D-4550 Series is adjusted to size
3 before leaving the factory. D-4551** – Size 1 – 5 with 35% spring
power adjustment over size 5.
** Meets ADA 5lb opening force
requirements. The D-4551 Series is adjusted to
size 2 before leaving the factory.
Latching Power Adjustment
The D-4550 / D-4551 Series Door
Closers have the provision to adjust
the leverage of the arms by changing
the pivot position of the arm in the
shoe. The shoe itself does not have to
be removed from the door or jamb.
Delayed Action
A delayed action feature is available
with this series for all applications and
arms. The feature permits the door to
close very slowly through the delayed
action cycle range. To order add suffix
DA to closer number.
Arm Options
Suffix
Description
L
Long Rod Forearm (TJ only)
H
Standard Hold Open
PH
Parallel Hold Open
EDA
Heavy Duty Arm
H-EDA
Heavy Duty Arm w/Hold Open
S
Heavy Duty Arm w/Stop
CS
Heavy Duty Arm w/Compression Stop
HS
Heavy Duty Arm w/Hold Open and Stop
HCS
Heavy Duty Arm w/Hold Open & Comp. Stop
T
Track Mount
HT
Track Mount w/Hold Open
TCS
Track Compression Stop
Packing
All D-4550 / D-4551 Series Door Closers with standard arm sets
are packed for mounting on standard, parallel arm or top jamb
applications. All closer assemblies are packed 6 per carton.
Tracks for track mounted closers are packed separately.
Thru Bolts and Sex Nuts
When thru bolting is ordered, factory will furnish sex nuts for
use with the machine screws furnished with the closer. Nuts
are sized to accommodate 1-3/8” or 1-3/4” thick doors.
ANSI and U.L. Specifications
The D-4550 / D-4551 Series Door Closers have been tested
and exceed the requirements of the ANSI/BHMA Standard
A156.4 - 2000 Grade 1.
UL listed with Underwriters’ Laboratories, Inc. and Underwriters’
Laboratories of Canada for “Self Closing Doors Without Hold-
Open Feature”. (File number 7525R).
UL10C – UBC 7.2
D-4550/D-4550 closers have been tested and certified to meet
the positive pressure criterrion of UL10C & UBC 7.2 (1997)
How to Order
Features
Cylinder Assembly Feature
Non-Handed, 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
Cylinder Body,
R-14 Die Cast Aluminum Alloy Feature
R-14 Aluminum Alloy provides wear resistance from contact with the piston during the opening and closing cycle (R-14 Wear characteristics similar to that of Cast Iron)
In addition the R-14 Aluminum Alloy holds the Cylinder Body dimensionally stable under extreme internal hydraulic pressures.
Piston Body Feature
Heavy steel construction with a 1-1/2” diameter. The large 1-1/2” Piston reduces internal hydraulic pressures. No Pressure Relief Valve Needed.
Internal Springs Feature
High strength steel construction. Longest dual springs provide greatest adjustment range in the industry.
Multiple Regulating Valves, V-Slotted Valve Regulation Feature
Multiple Regulating Valves provide a wide range of door control features. V-Slotted Valve maximizes fine tune adjustment capability.
All Weather Hydraulic Fluid Feature
All Weather Hydraulic Fluid eliminates the need for seasonal adjustment. Fire Resistant conforms to UL10C.
Varity of Standard Arm options
Forged Main Arm provides high strength with a reduced profile.
Parallel Hold Open Arm
Standard Arm Set
Standard Hold-Open Arm Set
Varity of Heavy Duty Arm options
Forged Main Arm provides high strength with a reduced profile. Non-Handed.
Heavy Duty Parallel Arm with Stop
Heavy Duty Parallel Arm with Compression Stop
Heavy Duty Parallel Arm Hold-Open & Stop
Track Rail Arm
Forged Main Arm provides high strength with a reduced profile. Non-Handed.
Cylinder Assembly Feature
Piston Body Feature
Internal Springs Feature
Multiple Regulating Valves, V-Slotted Valve Regulation Feature
