Single Arm, Fixed
Reach
 This
simple arm incorporates only three swivel planes of rotation and is
designed for use in top loading installations where the vehicle is
located at a fixed distance from the riser pipe. Two swivels at the
inlet permit both up-and-down and side-to-side movement of the
assembly, and the third swivel allows the drop pipe to remain
vertical.
Primarily used to load and unload rail cars through open domes in
installations where the cars can be accurately spotted, the single
arm configuration can also be used for tank truck applications. Some
allowance for mis-spotting is possible with the single arm and
increases as the diameter of the hatch opening increases.
Valve
located inboard on primary arm is optional. Also available with valve
located outboard to minimize drippage of viscous products after
loading is completed.
Adaptable to tight fill or closed system loading when equipped with
additional swivel planes of rotation and /or drop hose, along with
required outboard coupling or fitting.
Available in 2", 3", 4", and 6" sizes in steel, stainless steel,
aluminium, and specialty alloys. Threaded, welded and flanged
construction available.
 Supported
Boom Arm
This style
arm provides dependable, low maintenance service in high usage
installations. Due to the boom mounted design, no heavy loads are
placed on the swivel components, so wear is minimized.
In
simplest terms, the supported boom arm consists of a single arm
loader mounted on a swiveling boom that is attached to a permanent
structure with either a pillow block or flange bearing for added
strength and support. This configuration provides maximum flexibility
for mis-spotting and longer reaches from the loading rack to the tank
truck or rail car. Both the boom and the arm can be folded back
against the rack for convenient, compact storage away from the
traffic flow.
A Variety
of boom designs and configurations ar available to meet the needs of
virtually any installation. Used for tank truck and tank car open
dome loading, supported boom arms can be modified for closed system
loading and unloading, both top and bottom. Valve is optional.
Available in 2", 3", 4", and 6" sizes in steel, stainless steel,
aluminum, and specialty alloys. Threaded, welded and flanged
construction available.
This
type of arm incorporates a slide sleeve assembly that telescopes in
and out to adjust for variations in the distance from the loading
rack to the hauling vehicle. It is used primarily in small bulk
plants and terminals for top loading gasoline, fuel oil, or other
petroleum products. The slide sleeve arm is a medium duty unit
designed for flow rates up to 15 ft/sec (4.5m/sec). Higher flow rates
may tend to push the inner tube out beyond the loading point.
Available
in 2", 3", and 4" sizes. Typically supplied with female threaded
inlet connection in 2" size (A-32), with 150# ANSI flanged inlet in
3" and 4" sizes (A-32-F)
Slide
sleeve assembly has brass inner tube and aluminum outer sleeve.
Deadman type loading valve, drop tube swivel, and drop tube are
aluminum. Available with ductile iron or carbon steel inlet swivel
join. Viton seals are standard.
Both torsion spring balanced and counterweighted slide sleeve arms
are available. The spring balanced model is most common due to its
compact design and adjustability. The counterweighted version
requires considerably more clearance space behind the arm to operate.
Fixed
Reach Style Top Loading Arm
Applications
Features & Benefits
Specifications
-
Model:
E-32-F (with valve), J-32-F
-
Standard: Ductile Iron, Carbon Steel and Aluminum
-
Standard Size: 2" (51mm), 3" 976mm), 4" (102mm)
-
Available in all carbon steel and all stainless steel for
chemical and petrochemical applications.
-
Drop
hose can be used to add flexibility or for tight fill
applications.
-
Drop
tube length should not exceed 2/3rd the length of primary arm.
-
Necessary to get drop tube into and out of tank.
-
Normally stored upright (near vertical ) and/or folded up against
platform.
Limitations
- Inlet Swivel
Joint - Ductile Iron
- Torsion
Spring - Steel
- Loading
Valve* - Aluminum
- Vacuum
Breaker
- Primary Arm -
Steel
- Drop Tube
Swivel - Aluminum
- Drop Tube -
Aluminum
*optional |
 |
| Size(mm)* |
A"(mm) |
D"(mm) |
G"(mm) |
R"(mm) |
Y"(mm) |
| 2"(51) |
8
5/8(219) |
120(3048) |
48(1219) |
17(432) |
8
1/8(206) |
| 3"(76) |
10
1/2(267) |
120(3048) |
48(1219) |
18
1/2(470) |
10
3/4(273) |
| 4"(102) |
11
3/4(298) |
120(3048) |
48(1219) |
20(508) |
12
3/4(324) |
*Above are standard dimensions. Alternate dimensions and materials
are available. Contact you OPW representative for design
assistance.
Operating Envelope: Fixed Reach
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