Propane is a liquefied
petroleum gas and aromatic hydrocarbon that may be
utilized as a gaseous fuel. Propane's best known
hydrocarbon neighbors are methane (natural gas) and
butane (disposable cigarette lighters). Unlike
methane vapor that is lighter than air, propane
vapor is heavier than air. Unlike liquid butane that
will not vaporize at temperatures less than 32
degrees Fahrenheit, liquid propane will vaporize at
any temperature above -44 degrees fahrenheit. A
gallon of liquid propane weighs 4.24 pounds and
contains 91,650 BTU's. Propane, and all other
hydrocarbon based fuels, must be kept away from open
flame(s) and ignition sources. Propane must also be
handled with care, transported properly, and stored
The majority of propane
consumed in the Northeast is produced in the United
States and Canada. Liquid propane reaches your home
via a network of pipelines, rail cars and delivery
trucks. Your DiSanto propane system has been
installed in accordance with
NFPA Pamphlet #54 ,
NFPA Pamphlet #58, and any applicable state or local
Propane is sold as a liquid
(U.S. gallon), by the pound, or as a vapor by the
cubic foot. Your residential appliances consume
propane in its vapor form. Propane vapor reaches
your appliances through your propane distribution
system. When your DiSanto propane system was
installed it was determined to be 100% safe and leak
free. Absolutely no alterations or modifications
should be made to your propane system by anyone
other than DiSanto authorized personnel.
The slightest modification or alteration
to your propane system by unauthorized
personnel may cause a potentially
dangerous or life-threatening situation.
Any propane system may develop
faults that will allow propane vapor to escape.
Propane vapor most often evidences itself via its
distinctive unpleasant odor. The presence of
propane's distinctive odor indicates that propane
vapor is likely to be present and a potentially
dangerous situation may exist. Should this situation
ever present itself, extinguish all open flames and
immediately leave the area where the odor is
present. Do not touch any electrical switches or
appliances. Go directly to your propane system's
storage vessel, open the tank hood and close the
vapor service valve. Under no circumstance should
the vapor service valve be left open or be
re-opened. Proceed immediately to the nearest off
premise telephone and contact us for further
In rare instances, certain individuals may be unable
to detect propane's odor. In these situations, an
electronic leak detector should be utilized.
Propane vapor is
heavier than air. As such, in the event of an
unintended release of propane vapor, the vapor will
migrate to the lowest point. For example, your
basement or crawl space.
Do not tamper
with your system's supply lines or appliances.
Do not tamper
with any safety devices, regulators or storage
tank fittings .
yourself with the location of your storage
tank's vapor service shutoff valve.
repair of propane gas appliances or equipment
must be performed by a qualified technician.
Never test for a
propane leak using an open flame. Only suitable
leak detection solutions may be used. These
solutions are available from DiSanto Propane.
Propane must ALWAYS
be handled with CAUTION. In the unlikely event that
a propane leak should occur, take the following
a. Immediately shut
off the storage tank's service valve.
b. Eliminate all possible outside sources of
c. Do NOT turn on any light switches.
d. Do NOT use a cell phone or any other electrically
operated communications device.
e. Exit the building and IMMEDIATELY call 911 from
another location (e.g. a neighboring building).
f. AFTER calling 911, call DiSanto Propane
propane is colorless and odorless. For safety and
detection purposes, a chemical odorant (ethyl
mercaptan) is added to propane. The presence of the
odorant alerts you of a potential propane gas leak.
circumstances, the odorant in propane gas may
oxidize and lose it's distinctive odor. This odor
fade can occur in new steel containers when first
placed into service and in older steel containers
that have been left open to the atmosphere. Not all
people are able to detect the presence of the
propane's odorant. Physical conditions such as
competing odors, colds, flu, allergies, or smoking
may diminish a person's ability to detect the
If you think that you
cannot detect the presence of the odorant, or if you
have an impaired sense of smell, please
contact us. A service technician will
verify the presence or absence of odorant present in
your system. If you suffer from and impaired sense
of smell, consider the installation of an electronic
Only AGA approved
appliances that are properly installed and adjusted
may be connected to your gas system. A properly
adjusted gas appliance produces carbon dioxide and
water vapor as by-products of combustion. Improperly
adjusted appliances are dangerous and can produce,
among other things, carbon monoxide.
Never attempt a
"do it yourself" repair on any gas appliance.
Only qualified technicians should attempt the
installation or repair of gas appliances. If you are
experiencing a problem with any of your gas
contact us. One
of our technicians will correct the problem.
and Distribution System
As the ambient
temperature rises, propane vapor pressure rises.
When the ambient temperature drops, propane vapor
pressure drops. To alleviate this temperature
induced fluctuation of vapor pressure, your first
stage regulator and second stage regulator (or if
utilized, integral two-stage regulator) maintain a
constant service pressure to your appliances.
regulator is attached directly to your container's
vapor service valve. The first stage supply line
connects the first stage regulator to the second
stage regulator, which in turn, is connected to the
interior distribution system that your appliances
are connected to.
Your regulators are
installed in a specific manner. This is done to
alleviate premature failure due to atmospheric or
anthropomorphic conditions. When your regulators are
operating, they emit a very slight sound similar to
wind blowing. This is perfectly normal and no cause
Never attempt to
repair a regulator. Regulators are constructed
in such a manner as to preclude their reassembly.
if you believe that you are experiencing
A blocked regulator vent can result in
elevated gas supply pressures. Regulator failure
could ensue, which may result in injury and/or
Propane is sold and
stored in portable DOT containers or fixed placement
ASME containers. When a container is filled to its
proper liquid level it will be approximately 80
percent full. The remaining 20 percent of the
container's volume contains propane vapor. This is
the propane vapor consumed by your appliances.
The vapor space in
the container also provides room for the expansion
of liquid propane. Liquid propane has a moderately
high coefficient of expansion and accordingly,
expands greatly when subjected to temperature
If a container is filled beyond it maximum
permitted liquid filling density, a situation
may develop in which there will not be enough
space available to accommodate the liquid
propane's expansion. When an overfilled
container is exposed to any temperature
increase, the following hazardous conditions may
hydrostatic relief valve may actuate (open),
discharging liquid propane to the
propane could enter your system's
distribution lines. This would result in
higher than normal operating pressures to
container becomes hydrostatic, and the
hydrostatic relief valve fails to open, the
container could rupture, resulting in
serious injury or property damage.
your propane gas container, or storing it for future
use, a few simple precautions must be followed:
Never use, store,
or transport containers in the passenger
compartment of your vehicle.
Never store a container inside a building,
including your garage. Containers should be
stored outdoors and off the ground on a
non-combustible base. The container's vapor
service outlet should be plugged.
containers must be transported in an upright
position. This allows the hydrostatic relief
valve to remain in the container's vapor space
at all times. Only a container designed for
horizontal use may be transported horizontally.
a container, the container's vapor service
outlet must be plugged or protected. The
container's vapor service outlet is a female POL
Any container that
is damaged, corroded, exposed to fire, or appears to
be leaking must be removed from service immediately.
If you have a defective, damaged, or leaking
and a trained technician will remove it
properly trained technicians may engage in container
New containers must
be properly purged by a qualified technician prior
to their initial filling. This insures that your
appliances will operate properly. The presence of
oxygen in an improperly purged container can
diminish the containers odorant level and cause
excessive pressures. Once a container has been
properly purged, the vapor service valve must remain
closed, except when in use.
Containers are filled
by weight or fixed liquid level gauge to prevent
overfilling. It is imperative that your container
be filled by a qualified technician.
The exterior of your
container should be protected with light-colored,
heat-reflective paint. This will reduce pressure
increases as ambient temperatures rise. A proper
exterior coating will protect against rust and
corrosion. Aluminum containers do not require
When taking advantage
of DiSanto Propane rental tank service, all
container maintenance is provided free of charge.
to Safeguard Propane Use:
Check® is an inspection program developed by the
National Propane Gas Association (NPGA) and the
Propane Education & Research Council (PERC), and
funded by PERC that provides guidelines to
technicians on how to perform two different types of
residential safety inspections:
“Gas System Check” which must be completed on
the gas delivery system, including the
containers, regulators, and appurtenances; and
“Gas Appliance System Check” which includes all
of the items of a “Gas Systems Check” as well as
on all propane-burning appliances. GAS Check®
also educates homeowners on the safe use of
propane and the maintenance of propane