8/14/2019 PB#010 - L MH H Receivers
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Technical Bulletin L, MH and H Receivers 10/03 The Refuelling
Specialists
A convenient method of adapting a number of vehicles refuelled
by a single nozzleis to offer fuel receivers with different spring
settings . Varying the receiver springstrength (load, force) has
the same affect as changing the nozzle spring setting, aswhilst the
nozzle is in the ON position (open), the receiver spring counters
thenozzle piston spring. Basically they oppose each other, whereby
the receiver springattempts to close the nozzle, the piston spring
holds it open. Unfortunately, the
design constraints on the receiver spring prevent the same scope
of adjustmentcompared with the nozzle piston spring, but an
acceptable range of adjustment isavailable.
Due to the fact the receiver spring opposes the nozzle piston
spring, a light (L)receiver spring will create a higher nozzle
shut-off pressure, i.e. analogous to ahigher nozzle spring setting.
Conversely for the heavy (H) receiver spring, achievinga lower
nozzle shut-off pressure.
(L)ight Receiver Higher Nozzle Shut-Off PressureMedium/Heavy
(MH) Receiver Lower Nozzle Shut-Off Pressure
(H)eavy Receiver Lower Nozzle Shut-Off Pressure
3. APPLICATIONS1. Light Receiver: Applications for a light (L)
receiver include equipment that
exhibit higher delivery head pressures, and thus require a
higher nozzleshut-off pressure in order to prevent premature nozzle
shut-off. Suchequipment may include large mining excavators,
shovels, and even somelarger mining haul trucks when refuelled from
a remote point on the vehicle i.e. as opposed to directly into the
tank.
2. Medium/Heavy & Heavy Receivers: Applications for
medium/heavy (MH)and heavy (H) receivers include equipment that
exhibit lower delivery headpressures, and thus require a lower
nozzle shut-off pressure in order toprevent overpressurisation of
the fuel tank. Such equipment may includelighting plants,
skid-pumps, drills and perhaps other equipment whenrefuelled using
a Heavy (H) setting nozzle.
Banlaw have recently designed receivers to cater for
applications that requiredifferent receiver spring settings. Light
(L), medium-heavy (MH) and heavy (H)options are available.
RECEIVER SETTING NOZZLE SHUT-OFF PRESSUREStandard 0 kPaLight (L)
+15 to 20kPa
Medium-Heavy (MH) - 15 to 20kPaHeavy (H) - 25 to 30kPa
LEGEND: (delta) refers to the change in
For example, a refuelling nozzle (e.g. BAM800M) achieving a tank
pressure at shut-off of 70kPa on a vehicle fitted with a standard
receiver (e.g. AUS23), will achieve atank pressure of 85-90kPa if
fitted with a light (L) receiver (e.g. AUS23L), and 50-55kPa if
fitted with a medium-heavy receiver (e.g. AUS23MH).
