3
HSRL Series
introduction
Scope of the Manual
This Instruction Manual covers Installation and
Maintenance for the HSRL Series regulators, which
are second stage regulators used on LP-Gas vapor
service applications. They are not to be used on
liquid service.
Description
The HSRL Series regulators are second stage low
pressure regulators, provide low pressure, inches of
water column, delivery pressures. They are normally
set at 11-inches w.c. / 27 mbar pressure. They have
high capacity internal relief valve construction.
installation
!
WaRninG
all vents should be kept open to
permit free flow of air in and out of
the regulator. Protect vent openings
against the entrance of rain, snow, ice
formation, paint, mud, insects, or any
other foreign material that could plug
the vent or vent line.
LP-Gas may discharge to the
atmosphere through the vent. an
obstructed vent which limits air or
gas flow can cause abnormally high
pressure that could result in personal
injury or property damage. Failure to
use a vent line on indoor installations
can cause a hazardous accumulation
of gas which could result in personal
injury or property damage.
General installation instructions
Before installing the regulator:
• Check for damage, which might have occurred
in shipment.
• Check for and remove any dirt or foreign material,
which may have accumulated in the regulator body.
•
Replace old pigtails. Blow out any debris, dirt or
copper sulfate in the copper tubing and the pipeline.
•
Apply pipe compound to the male threads of the
pipe before installing the regulator.
• Make sure gas flow through the regulator is in the
same direction as the arrow on the body. “Inlet”
and “Outlet” connections are clearly marked.
Figure 2. Regulator with Vent Pointed Down
3 FEET /
0.91 meter
VENT POINTED DOWN
3 FEET /
0.91 meter
VENT POINTED DOWN
