Page 438 - 4300 Catalog Cover.pdf

4300 Catalog Assembly / Installation
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
T28
EO Assembly
The proper make-up and assembly of EO bite type fittings, as
with other fittings, is critical to their proper functioning. Proper
assembly consists of the following steps:
1. Cutting, deburring and cleaning of the tube
2. Pre-set of progressive ring
3. Pre-set inspection
4. Installation
Step 1 (cutting, deburring and cleaning of the tube) has been
previously covered on pages T12-T13.
Pre-set of Progressive Ring
The EO fitting requires a pre-set operation that creates a bite
by the progressive ring into the outer surface of the tube. There
are two methods of achieving the pre-set:
• Manually with the fitting body or hardened pre-assembly
tool
• Hydraulically with the EO-Karrymat, EOMAT III, Hydra Tool
or Hyferset
Pre-set Using the Fitting Body or Hardened
Pre-assembly Tool
Pre-settingwith thefittingbody isonly recommended for steel and
copper tubes. For frequent pre-setting, stainless steel tube and
hose standpipe fittings, a hardened pre-assembly tool (VOMO)
is strongly recommended (see Fig. T40).
Steps for pre-set using the fitting body or the hardened
pre-assembly tool.
1. Lubricate thread and cone of fitting body or hardened
pre-assembly tool, as well as the progressive ring and nut
threads.
2. Slip nut and progressive ring over tube, assuring that they
are in the proper orientation.
Correct
Incorrect
3. Screw nut onto fitting body or hardened pre-assembly
tool until finger-tight or light wrench resistance. Hold tube
against the shoulder in the cone of the fitting body or hard-
ened pre-assembly tool.
4. Mark nut and tube in the finger-tight or light wrench-resis-
tant position.
Fig. T40 – VOMO pre-assembly tool
EO Assembly