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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 Office or 

Sales Representative.

Specifications

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 flammable gas 

service, vented gas might accumulate and 

cause personal injury, death or property 

damage due to fire 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 flow 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 flow 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 flapper.

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 

sufficiently 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.

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