Hydraulic Hose Register Guidance Document

i-Tech, A Division of Subsea 7
HYDRAULIC HOSE REGISTER
GUIDANCE ON IDENTIFYING AND DEVELOPING A HYDRAULIC
HOSE REGISTER
GD-GL-ITS-EQP-701
i-Tech
C1
03.02.2011
Approved for Use
John Milne
M Fraser
B Johnston
A1
20.01.2010
Draft for Internal Review
John Milne
REVISION
DATE
DESCRIPTION
ORIGINATOR
CHECKED
APPROVED
CLIENT APPR
Document Title:
HYDRAULIC HOSE REGISTER - GUIDANCE DOCUMENT
Document No:
GD-GL-ITS-EQP-701
File Ref:
GD-GL-ITS-EQP-701- Hydraulic
Hose Register - Guidance
Document (C1)

Document Title:
HYDRAULIC HOSE REGISTER - GUIDANCE DOCUMENT
Document No:
GD-GL-ITS-EQP-701
i-Tech, A Division of Subsea 7
Rev No:
C1
Date:
03.02.2011
AMENDMENTS
Revision
Date
Description of Amendment
A1
20:01:2010
Draft – Issued for Review
C1
03:02:2011
Approved for Use

Document Title:
HYDRAULIC HOSE REGISTER - GUIDANCE DOCUMENT
Document No:
GD-GL-ITS-EQP-701
i-Tech, A Division of Subsea 7
Rev No:
C1
Date:
03.02.2011
CONTENTS
1. INTRODUCTION .............................................................................................................................................4
1.1 SAFETY .................................................................................................................................................4
1.2 HOW TO IDENTIFY HYDRAULIC HOSES ...........................................................................................4
1.3 GIVE EACH HOSE AN IDENTITY TAG. ...............................................................................................4
1.4 READ THE HYDRAULIC HOSE MARKINGS .......................................................................................4
1.5 IDENTIFY THE HOSE SIZE ..................................................................................................................4
1.6 IDENTIFYING THE TYPE OF HYDRAULIC HOSE OR RATING .........................................................4
1.7 SKIVED HOSES ....................................................................................................................................5
1.8 HOW TO IDENTIFY THE HOSE FITTINGS .........................................................................................5
1.9 ANGLE BETWEEN ELBOW FITTINGS ................................................................................................5
1.10 HOSE FITTING MATERIALS AND CORROSION PROTECTION .......................................................5
2. HOW TO MEASURE THE LENGTH OF AN ASSEMBLY..............................................................................6
3. HOW TO MEASURE THE ORIENTATION OF THE END FITTINGS ............................................................7
4. JIC - SAE J514 37º FLARE ............................................................................................................................8
5. BSP – BRITISH STANDARD PIPE.................................................................................................................9
6. ORFS – SAE J1453 O-RING FACE SEAL .................................................................................................. 10
7. NPT – NATIONAL PIPE THREAD ............................................................................................................... 11
8. SAE FLANGES ............................................................................................................................................ 12
9. HYDRAULIC HOSE WORKING PRESSURE RATING ............................................................................... 15
10. HYDRAULIC HOSE DIMENSIONS ............................................................................................................. 16
APPENDIX I. ........................................................................................................................................................... 17
EXAMPLE HOSE REGISTER ...................................................................................................................... 17

Document Title:
HYDRAULIC HOSE REGISTER - GUIDANCE DOCUMENT
Document No:
GD-GL-ITS-EQP-701
i-Tech, A Division of Subsea 7
Rev No:
C1
Date:
03.02.2011
1. INTRODUCTION
This document is supplementary to and should be used in conjunction with the Subsea 7
Hydraulic Hose Inspection & Maintenance Standard ST-GL-EQP-001.
1.1 SAFETY
You must always refer to equipment manuals, make sure the load is supported, pressure
relieved, power supply isolated and locked off before approaching equipment to carry out
hydraulic hose inspection.
1.2 HOW TO IDENTIFY HYDRAULIC HOSES
This information covers high pressure hydraulic hose for all equipment.
You should always keep a record of the following information to ensure easy maintenance
and replacement of your hoses.
1.3 GIVE EACH HOSE AN IDENTITY TAG.
Start by identifying a hose that is relevant to a circuit. Tag the hose using a suitable I.D tag
and record the I.D number and the circuit the hose is part of in the hose register.
1.4 READ THE HYDRAULIC HOSE MARKINGS
Modern hoses are clearly marked with the hose type, size, pressure rating and cure date.
Do not rely on this information if you think the system pressure may be greater but also
never fit a new hose that is rated with a lower size or pressure.
Each hose on a system will probably have a different rating so make sure you check each
one. Some will be high flow and high pressure while other parts of the circuit may require
lower flow and lower working pressures.
1.5 IDENTIFY THE HOSE SIZE
Measure and specify the ID not the OD. For example ¾” is the hose bore size not the
outside diameter. Because of different wall thicknesses you cannot rely on measuring the
wall thickness of the tube although measuring the OD of an elbow will give a good guide.
1.6 IDENTIFYING THE TYPE OF HYDRAULIC HOSE OR RATING
Hydraulic hoses are rated for different pressures, temperatures, fluids and/or environments.
This is generally dependent on the number of internal wire braids, the rubber used and
ferrule end fittings. For example R2T hose has 2 wire braids and is commonly used for low
to medium pressure hydraulic fluid. 4SP hose has 4 wire braids in within the rubber and is
capable of higher pressures.
Without cutting the hose you will not be able to see how many wire braids are used within
the hose. However, often the ferrules will have either 2 or 4 small ring marks around them
to indicate what type of hose has been used.
General hoses types are:-
R2AT – Standard, low to medium pressure hydraulic hose, un-skived.
R2A - Pressure washer hose externally skived for higher temperatures.
4SP - High pressure multi-spiral hose with external skive.
4SH - High pressure multi-spiral hose with external and internal skive.

Document Title:
HYDRAULIC HOSE REGISTER - GUIDANCE DOCUMENT
Document No:
GD-GL-ITS-EQP-701
i-Tech, A Division of Subsea 7
Rev No:
C1
Date:
03.02.2011
1.7 SKIVED HOSES
Skiving is when the external or internal rubber is removed to expose the wire braiding. This
is only done for the length of the ferrule and allows the ferrule to locate more securely on
the wire braid.
1.8 HOW TO IDENTIFY THE HOSE FITTINGS
Each country and industry tends to have its own standard fittings. However there is rarely a
set standard and equipment fitted to the same machine can often have different standards.
In the UK BSP 60cone are common. These often have a distinctive rounded nut. If the nut
flat faces continue full width and is fitted to metal tube then it's probably metric. If the nut
has 2 notches then it's probably JIC 37degree flare. You may need to break each fitting to
identify the fitting type and size.
You must always refer to equipment manuals, make sure the load is supported, pressure
relieved, power supply isolated and locked off before loosening any fittings.
The best way to check is to screw a known fitting into the hose but you can also check
thread pitch and diameters to confirm.
In summary you will need to:-
Identify whether they are male or female threaded fittings
Identify the thread as BSPP, BSPT, JIC, ORFS, and NPT. There are a vast range of
Metric thread fittings also available.
Identify the thread size. If in doubt then measure the OD (male) ID (female) of the
thread and the pitch. Identification charts for BSPP, BSPT, JIC, ORFS, and NPT are
included in this document.
1.9 ANGLE BETWEEN ELBOW FITTINGS
If you have elbows on both ends then you must specify the relative angle of end one
compared to end two.
To specify this hold the hose ends in your right and left hands. Bring your right hand
towards you and move the left away. Now looking straight down the hose rotate the right
hand clockwise to give the relative angle of one fitting to the other.
Be careful that you have sufficient swivel fittings to align the hose and / or any fittings or
valves etc.
1.10 HOSE FITTING MATERIALS AND CORROSION PROTECTION
Hose fittings are generally plated steel but often for marine applications will be Stainless
Steel. Always use a lubricating paste on stainless threads to stop them binding when you
assemble them.
Keep your hose register safe.