
D103075X012
Installation Sheet Type HSR
www.emersonprocess.com/regulators
June 2006
Introduction
This manual provides instructions for the installation, 
startup, and adjustment of the Type HSR pressure 
regulator. If maintenance is required, refer to the Type 
HSR Instruction Manual, form 5753. To receive a copy of 
the instruction manual, contact your Fisher Sales Ofce or 
Sales Representative.
Specications
Maximum Emergency Inlet Pressures(1)
150 psi (10,3 bar)
Maximum Emergency Outlet (Casing) Pressures(1)
25 psig (1,72 bar)
Outlet Pressure Ranges
4 to 6-inches w.c. (10 to 15 mbar), 
6 to 8-inches w.c. (15 to 20 mbar),
8 to 10-inches w.c. (20 to 25 mbar),
10 to 12.5-inches w.c. (25 to 31 mbar), 
12.5 to 20-inches w.c. (31 to 50 mbar), 
20 to 35-inches w.c. (50 to 87 mbar),
1.25 to 2.2 psig (0,09 to 0,15 bar)
Temperature Capabilities(2)
-20° to 160°F (-29° to 71°C)
Installation
!
WARNING
Personal injury, equipment damage, or 
leakage due to escaping gas or bursting 
of pressure-containing parts might result 
if these regulators are overpressured or 
installed where service conditions could 
exceed the limits for which the regulators 
were designed, or where conditions exceed 
any ratings of the adjacent piping or 
piping connections. To avoid such injury 
or damage, provide pressure-relieving 
or pressure-limiting devices (as required 
by the appropriate code, regulation or 
standard) to prevent service conditions 
from exceeding those limits.
Additionally, physical damage to a 
regulator could cause personal injury and 
property damage due to escaping gas. To 
avoid such injury and damage, install the 
regulator in a safe location. 
A regulator may vent some gas to the 
atmosphere in hazardous or ammable gas 
service, vented gas might accumulate and 
cause personal injury, death or property 
damage due to re or explosion.  Vent 
a regulator in hazardous gas service to 
a remote, safe location away from air 
intakes or any hazardous location. The 
vent line must be protected against 
condensation or clogging.
Before installing the regulator, check for damage which 
might have occurred in shipment. Also check for dirt 
or foreign matter which may have accumulated in the 
regulator body or in the pipeline. Apply pipe compound to 
the male threads of the pipeline and install the regulator 
so that the ow is in the direction of the arrow cast on 
the side of the body. The diaphragm actuator assembly 
can be rotated to any position relative to the body, in 90° 
increments. Remove the two cap screws that hold the 
body to the actuator in order to rotate the diaphragm 
actuator assembly.
Do not install the regulator in a location where there can 
be excessive water accumulation, such as directly beneath 
a downspout or in an undrained pit.
To obtain the maximum ow capacities or other 
performance characteristics, the length of pipe from the 
regulator outlet to the meter should have no bends and 
should be the same size as the regulator outlet. Replace 
the regulator if water gets into the spring case or the lower 
casing of the regulator.
CAUTION
You are advised to use new vent piping 
because defective threads on the relief 
vent piping may interfere with the venting 
assembly if the piping obstructs the 
movement of the vent apper.
On indoor installations, the vent should be piped outside 
the building. Remove the screen from the regulator vent 
connection and connect vent piping from that connection 
to the outdoors. Install a weather and insect resistant 
vent assembly on the outside end of the pipe. Inspect 
the vent opening regularly. On some installations, it may 
be necessary to install the regulator beneath a protective 
hood. The vent should be pointing or sloping down 
sufciently to allow any condensate to drain.  Also check 
the regulator periodically for external or internal corrosion.
Overpressure Protection
!
WARNING
Some type of overpressure protection is 
needed if actual inlet pressure can exceed 
the outlet pressure rating. Overpressuring 
any portion of this equipment may cause 
damage to regulator parts, leaks in 
the regulator, or personal injury due to 
bursting of pressure-containing parts or 
explosion of accumulated gas.