Double
‐
stage tank regulator PS 25 bar
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ADVANTAGES AND EQUIPMENT
Pressure relief valve (PRV) option
The pressure relief valve (PRV) is an automatic safety device with limited flow that is installed
in the pressure regulator to protect connected devices against inadmissible high pressures. If
there is inadmissible high pressure at the outlet side, for example due to high temperatures,
the PRV opens and relieves the excess pressure through the breather. When the pressure
falls, the PRV closes again automatically.
A connection to the open air must be created if a pressure regulator with PRV is to be
operated indoors, inside a housing or in any other areas that could be at risk.
"PRV" is marked on the type label of the pressure regulator.
Escaping liquid petroleum gas (category 1):
•
is highly flammable
•
may cause explosions
•
severe burns in case of direct skin contact
Regularly check connections for leak-tightness.
If you smell gas or detect a leak, shut the system down immediately.
Keep ignition sources and electrical devices out of reach.
Observe applicable laws and regulations.
Risk of asphyxiation from gas leaks in enclosed spaces.
High concentrations of gas can cause difficulty in breathing and lead to
unconsciousness.
A discharge line must be connected from the breather on the
product to outdoors.
Insect protection option
Insert in the breather on the 8 mm vent socket or screw into the female thread G 1/8.
Check regularly that the sieve is not blocked. A blocked sieve can increase or lower the outlet
pressure and cause the safety overpressure shut-off valve (OPSO) to respond. Clean or
replace it as required.
Safety overpressure shut-off valve OPSO option
The OPSO is an automatic safety device that protects connected consuming devices against
excessive high pressure. The outlet pressure is monitored constantly. If the outlet pressure is
exceeded, the OPSO responds and the gas feed is interrupted. The visual display switches
from
GREEN
to
RED
.
When it has responded, the OPSO must be opened manually. If the OPSO responds, the gas
feed can be restarted again by following the steps in "Restarting the safety overpressure shut-
off valve OPSO". If an OPSO is installed, the pressure regulator is also marked "OPSO".
Under-pressure shut-off device (UPSO) option
The under-pressure shut-off device (UPSO) is a safety device that closes the gas feed if there
is an unusual pressure drop. This can be caused, for example, by the following events:
•
Gas flow > 110% of the nominal flow rate of the double-stage tank regulator, e.g.
because several gas appliances are connected
•
Burst pipe on the outlet side
•
Low pressure on the inlet side (e.g. gas tank is empty)
