| 1.0 |
PURPOSE
To provide written instructions to fabricating distributors for the proper assembly of Crane Resistoflex hose products. |
| 2.0 |
SCOPE
This procedure covers TRC, CB, CTH, SBT, and CPB hoses in sizes 1/2" - 2". |
| 3.0 |
PROCEDURE |
|
3.1 |
Before proceeding, operators should be able to read and thoroughly understand the following requirements. This document should also be made a part of your controlled document system. |
| 3.2 |
Choose the appropriate bulk hose, collars, and fittings. Measure and mark the correct length of hose by subtracting the cut length factor for each fitting per HOSE-TRC print, HOSE-CB print, HOSE-CTH print, HOSE-SBT print, or HOSE-CPB print from the hose total length. (Example: The cut length hose for 1" TRC hose 10' long, male NPTF x male Camlock 120" - 2.250" - 1.750" = 116" of cut hose). If fabricating CB, CTH, SBT, or CPB hose be sure the ends of the hose are wrapped with tape to secure the braid before cutting. The ends of the hose are to be cut straight and the hose must be free of debris. If fabricating TRC hose, leave plastic wrap on hose, except under crimp collars. NOTE: All "drops" must be retagged with part number. CB hose and CTH hose can not be visually identified if mixed. CB hose placed in chlorine service will result in failures. CTH collars are identified with a single groove in the O.D. Fittings are stamped with an "M". |
|
3.2.1 |
All TRC hoses are to be electrically connected by means of the wire contained within the hose, the wire shall be bent over the end of the hose and against the outside diameter of the hose. The wire shall extend along the length of the hose approximately ½", so that contact is made with the collar when crimped. Before installing the crimp collar, check for wire continuity with an ohmmeter. After final hose assembly check for continuity from fitting to fitting. |
| 3.3 |
Place a collar on each end of the hose leaving room for the lip of the fitting. For SBT hose, remove tape before assembling collar. SBT collars are threaded and should be screwed into position. Insert a fitting on each end of the hose, being sure the fitting is snug against the collar. If applicable, cut kink guard or shrink wrap and assemble over hose. A kink guard or shrink wrap is required for CTH hose. Spiral guard is standard. |
| 3.4 |
Choose the appropriate die set per Table 1. Dies other than Resistoflex dies may be used as long as the appropriate crimp length and diameter is achieved. Set crimper to achieve correct crimp diameter. |
| 3.5 |
Place hose in crimp machine. Crimp collar per Table 1. |
|
|
TABLE 1
CRIMP DIAMETERS |
SIZE
(IN.) |
HOSE
TYPE |
CRIMP
DIAMETER |
RESISTOFLEX
CRIMP DIES |
| 1/2 |
CB, CTH & SBT |
.840 - .855 |
E45324 |
| 3/4 |
CB, CTH & SBT |
1.075 - 10.90 |
E45323 |
| 1 |
CB, CTH & SBT |
1.335 - 1.355 |
E45210 |
| 1 1/2 |
CB, CTH & SBT |
1.990 - 2.010 |
E45211 |
| 2 |
CB, CTH & SBT |
2.500 - 2.520 |
E45212 |
| |
| 1/2 |
CPB |
.898 - .918 |
E45324 |
| 3/4 |
CPB |
1.138 - 1.158 |
E45323 |
| 1 |
CPB |
1.355 - 1.375 |
E45210 |
| 1 1/2 |
CPB |
2.061 - 2.081 |
E45211 |
| 2 |
CPB |
2.490 - 2.510 |
E45212 |
| |
| 1/2 |
TRC |
1.165 - 1.185 |
E45330 |
| 3/4 |
TRC |
1.450 - 1.470 |
E45331 |
| 1 |
TRC |
1.666 - 1.686 |
E45172 |
| 1 1/2 |
TRC |
2.212 - 2.232 |
E45173 |
| 2 |
TRC |
2.759 - 2.779 |
E45236 |
|
| 3.6 |
Check the OD of the collar. NOTE: All measuring instruments and gauge controls shall be of professional quality and calibrated and maintained on a calibration schedule. |
| 3.7 |
Repeat steps 3.4 - 3.6 to crimp the other end of the hose. |
| 3.8 |
Determine the proof pressure per HOSE-TRC print, HOSE-CB print, HOSE-CTH print, HOSE-SBT print, HOSE-CPB print. NOTE: Hose shall be tested first with clean water at proof pressure and then at working pressure with air under water. |
| 3.9 |
Test for 60 seconds. If leak appears, mark hose at leak. |
| 3.10 |
If hose passes, mark with blue dot for hydro test and yellow dot for air under water test, or other appropriate means. If hose leaks, cut hose at mark. CTH hoses must be dried before delivery to the customer. |
| 3.11 |
Crimp accessory collars as necessary to provide tight fit on hoses. |
| 3.12 |
Check the length of hose assembly. |
| 3.13 |
Attach warning tag and protective covers to hose assembly. |
| 3.14 |
Complete Inspection Sheet. |
| 4.0 |
EQUIPMENT AND SUPPLIES
Materials to make four 20" hoses as specified by Resistoflex.
Crimping machine and crimp dies.
Pressure test equipment.
Ohmmeter.
Calibrated measuring instruments.
Protective end covers.
Distributor Fabrication Procedures for Crane Resistoflex TRC, CB, CTH, SBT, and CPB Hoses.
HOSE-TRC print.
HOSE-CB print.
HOSE-CTH print.
HOSE-SBT print.
HOSE-CPB print. |
| 5.0 |
JOB RESPONSIBILITIES
The distributor management shall utilize only properly trained and qualified personnel to fabricate hoses. They shall certify that all hoses are manufactured to this procedure, using proper equipment, tooling and calibrated instruments. |
| 6.0 |
EXHIBITS |
|
6.1 |
Document Revision Log. |
|
6.2 |
CB/CTH/SBT/CPB Inspection Sheet
Inspection Sheet 6.2. |
|
6.3 |
TRC Inspection Sheet
Inspection Sheet 6.3. |
Document revised July 2002
This document may be used and reproduced only with permission of Resistoflex.
The information contained herein is provided only as a guide for the use of Resistoflex products and does not constitute an express warranty of any kind. Resistoflex specifically disclaims the implied warranty of merchantability and fitness for a particular purpose.
Confidential |
