装卸臂概述
O PW% LOADING ARM OVERVIEW
a I, company
System Design Tips
Line Sizing: As a general rule, it is recommended that the =___
line velocity not exceed 15-20 ft/second (4.6 to 6.1 m/sec).
The chart (right) shows recommended flow rates for 2 150 GPM (568 LPM) 200 (757)
differentiline sizes. 3 350 GPM (1,325 LPM) 450 (1,703)
4 600 GPM (2,271 LPM) 800 (3,028)
6 1,350 GPM (5,110 LPM) 1,800 (6813)
Plant Piping Orientations
Several options are available depending on the plant-piping configuration.
Upfeed Downfeed Horizontal Right Handed Left Handed
Feed
Materials
Materials and seals must be generally compatible ® Metals (standard): carbon, steel,
with the product and its temperature during stainless steel, aluminum
handling. Materials will typically match plant 。Seals (standard): Fluorocarbon ，
piping on which the arm is installed. Buna-N, PTFE, EPDM and Neoprene
s。Piping: Schedule 10, 40, 80，
seamless or welded,
Added Weight all flanged
Adding or reducing weight on an arm will affect
the arm’s balance. Please specify all weight that
will be added to or taken off arm when installed.
Common additions include:
Adequate Range of Motion
* Can arm be easily accessed/stored?
¢ Insulation
« Valving ¢ Any possible interference/obstacles?
« Vapor Recovery * Adequate Flexibility to make connection?
Lines — Structural Steel
¢ Product Being
Stored in Arm
— Overhead Pipe Access Equipment
Termination Connections
Autolok®
* Provides extra protection
against accidental release
or uncoupling
* Arms lock automatically
with a positive click
o If our exclusive Twin-Kam™
arms ever break, they are
replaced FREE
Kamvalok®
* Economical cam and groove
= - dry-disconnect coupler
* Prevents spillage at point of
connection/disconnection
e Other Considerations: Valving — Valves are
a commonly specified option. Specific valves
can be provided to meet your needs.
Note location and type of valve required.
Steam Tracing — Loading arm can be easily
designed to incorporate partial or full steam jacketing.
High Level Shut-Off — Several options are
available to help ensure that overfill conditions
are prevented.
Grounding — Another important
consideration when loading volatile products
several options are available to help ensure
system is properly grounded.
LR ——I\P]
o Lever action closes flow at
both ends of connection
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