Dixon Valve 25 TON RAM SEC07 Holedall Petroleum IX - Manual (Page 3)

25 Ton Ram Instruction Manual Internal Expansion of H-520 Couplings
customer service 800 • 355 • 1991 2 Section 7
Accurately measure the hose O.D. with a diameter tape.
Select the correct Holedall Petroleum Ferrule from the DPL
based upon the hose O.D. just measured.
Note: Always measure both ends of the hose for accurate
ferrule selection.
Make sure the hose end is cut square. Measure and
mark the hose in accordance with the provided Insertion
Dimension chart (see page 3). This will ensure that the
proper rubber displacement “pocket” is maintained when
proceeding to Step 7.
Ensuring that the end of the ferrule is aligned with the mark
from Step 6, slide the hose with ferrule over the shank until
the ferrule contacts the shoulder of the stem. Check to see if
the proper pocket is maintained.
Important! If there is an insufficient pocket for the rubber to
displace into, damage may occur to the stem, ferrule and/or
hose.
While holding the hose and the ferrule firmly against the stem shoulder,
engage the Ram by stepping on the foot pedal, or depressing the “ON”
button on the remote control. The internal expansion operation is
complete when the hose and stem assembly is pushed completely over
the internal expansion plug. Release the foot pedal or “ON” switch.
Note: If the gauge reads 10,000 PSI before internal expansion is
complete, stop. Contact Dixon for further assistance.
During internal expansion never stand directly in front of the
Ram. Visually inspect the coupling and clean excess lubricant from the
stem ID. Dixon Valve and Coupling Company recommends that all
hose assemblies be tested as recommended by the Rubber Manufacturers
Association.
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