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DESCRIPTION
The
ZVF 50
is a manual (non-automatic) high flow nozzle for overwing and helicopter refuelling
for all types of civil and military aviation fuels.
The construction of the nozzle fulfils the requirements of JIG, ATA Spec. 103, PEI / RP 1300-13,
SAE AS 1852 (interface nozzle spout).
Operating Conditions
:
Nominal size:
DN 50 mm ( 2
"
)
Flow rate:
Suggested up to 400 l / min. (85 IGM)
Working pressure max.
10 bar (Nominal Pressure PN 10)
Operation temperature range:
- 40° C up to + 55° C
Operation:
for pressure service (Standard type)
also suitable for defuelling ('L' type)
Before leaving the factory, each nozzle is subjected to a functional test and validated with a
serial number.
INSTALLATION
The
ZVF 50 is delivered ready for use. Nozzles should only be installed and tested by competent
personnel. Applicable laws, regulations and Codes of Practice have to be followed. After connection
of the hose assembly to the nozzle, please follow the following steps:
1. With low pump pressure ( 0,5 – 1 bar)
• check tightness of all components.
• vent and flush the nozzle with AVGAS or JET A1 fuel by pulling the lever several times.
Note : Use suitable receiving container. The used fuel volume has to be disposed,
do not use it again.
2. With maximum pump pressure intended for operation
• check tightness of all components.
• vent and flush the nozzle with AVGAS or JET A1 fuel by pulling the lever several times.
Note : Use suitable receiving container. The used fuel volume has to be disposed,
do not use it again.
Always wear suitable protective clothing.
OPERATION
For the operation of the ZVF 50, local laws and code of practice must be followed.
When the pump is running, fuelling is started by pulling the nozzle lever. The flow rate of the ZVF 50
can be regulated smoothly and easily. At the beginning and towards the end of the refuelling ope-
ration – especially when dealing with awkwardly located or shaped filler openings – a reduced flow
rate is advisable to safely avoid fuel splashbacks from the filler opening.
The necessary hold-open force of the lever is lower than with comparable nozzles. When using
the LeverAssist
®
hold-open aid ( page 10 ) further reduces the necessary hold-open force by 75 %.
To end fuelling, release the lever of the ZVF 50.
