Page 6 - DixonCatalog20092010

4 DPL410 877.963.4966 • www.dixonvalve.com
S.T.A.M.P.E.D.
MSHA (Mine Safety and Health Administration) Regulations
When fabricating and specifying hose assemblies ask the following questions:
Size: What is the I.D. (Inside Diameter) of the hose? What is the O.D. (Outside Diameter) of both ends of
the hose? What is the overall length of the assembly required?
Temperature : What is the temperature range of the media (product) that is flowing through the hose assembly?
What is the temperature range of the environment that surrounds the outside of the hose assembly?
Application : How is the hose assembly actually being used? Is it a pressure application? Is it a vacuum (suction)
application? Is it a gravity flow application? Are there any special requirements that the hose assembly is
expected to perform? Is the hose being used in a horizontal or vertical position?
Are there any pulsations or vibrations acting on the hose assembly?
Media : What is the media/material that is flowing through the hose assembly? Being specific is critical.
Check for: Abrasive materials, chemical compatibility, etc.
Pressure: What is the maximum pressure including surges (or, maximum vacuum) that this hose assembly will be
subjected to? Always rate the maximum working pressure of your hose assembly by the lowest rated
component in the system.
Ends: What couplings have been requested by the user? Are they the proper fittings for the application and hose
selected?
D ixon: Dixon recommends that, based on the hose, fittings and attachment method used, all assemblies be
permanently marked with the designed working pressure and intended media. Do not use other
manufacturer’s fittings or ferrules with Dixon products due to the differences in dimensions and tolerances.
We also recommend that all hose assemblies be tested frequently.
Be Safe: Any questions on application, use or assembly call 800-355-1991.
30 CFR Sections 56.13021 and 57.13021
Except where automatic shut-off valves are used, safety chains or other suitable locking devices shall be used at connections to
machines of high-pressure hose line of ¾" inside diameter or larger, and between high-pressure hose lines of ¾" inside diameter
of larger, where a connection failure would create a hazard.
30 CFR Section 75.1730
(e) Safety chains, suitable locking devices, or automatic cut-off valves shall be used at connections to machines of high-pressure
hose lines of ¾" inside diameter or larger, and between high-pressure hose lines of ¾" inside diameter or larger, where a
connection failure would create a hazard. For purposes of this paragraph, high-pressure means pressure of 100 PSI or more.
30 CFR Section 77.412
(d) Safety chains or suitable locking devices shall be used at connections to machines of high-pressure hose line of 1" inside
diameter or larger, and between high-pressure hose line of 1" inside diameter or larger, where a connection failure would create
a hazard.