Emerson HSR Installation Guide

Installation Guide
English – July 2009

Introduction

Type HSR

This Installation Guide provides instructions for
installation, startup, and adjustment. To receive a copy
of the Instruction Manual, contact your local Sales

Ofce or view a copy at www.sherregulators.com.

For further information refer to: Type HRS Instruction
Manual (form 5753, D103074X012).

P.E.D. Categories

This product may be used as a safety accessory

with pressure equipment in the following Pressure
Equipment Directive 97/23/EC categories. It may
also be used outside of the Pressure Equipment
Directive using sound engineering practice (SEP)
per table below.

SIZE,

DN / NPS

20, 25 / 3/4, 1 All All - - - - SEP

BODY

MATERIAL

END

CONNECTION

STYLE

PED

LIMITATION

PED

CATEGORY

Specications

Maximum Emergency Inlet Pressure

10,3 bar / 150 psi

Maximum Emergency Outlet (Casing) Pressure

1,75 bar / 25 psig

Outlet Pressure Ranges

10 to 15 mbar / 4 to 6-inches w.c.
15 to 20 mbar / 6 to 8-inches w.c.
20 to 25 mbar / 8 to 10-inches w.c.
25 to 31 mbar / 10 to 12.5-inches w.c.
31 to 50 mbar / 12.5 to 20-inches w.c.
50 to 87 mbar / 20 to 35-inches w.c.
0,09 to 0,15 bar / 1.25 to 2.2 psig

Proof Test Pressure

All Pressure Retaining Components have been
proof tested per Directive 97/23/EC - Annex 1,

Section 7.4

Temperature Capabilities

(1)

-29° to 71°C / -20° to 160°F

(1)

(1)

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 pressure­relieving 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.

1. The pressure/temperature limits in this installation guide and any applicable standard or code limitation should not be exceeded.

www.sherregulators.com

D103114XUS2

Type HSR

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 sufciently to allow any condensate

to drain. Also check the regulator periodically for

external or internal corrosion.

Overpressure Protection

Startup

With proper installation completed, slowly open the
shutoff valve. Check all connections for leaks. Check
the downstream equipment for proper operations.

Adjustment

To increase the outlet pressure setting, turn

the adjusting screw clockwise. To reduce the
outlet pressure setting, turn the adjusting screw
counterclockwise. A pressure gauge should always
be used to monitor downstream pressure while

adjustments are being made. Do not adjust the
spring to produce an outlet pressure setting above

the limit identied on the information label. If the
required pressure setting is not within the range of
the spring being used, substitute with the correct

spring. When changing the spring, also change the

range identied on the information label to indicate

the actual pressure range of the spring in use. After
the spring adjustment has been completed, replace
the closing cap.

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.

Type HSR regulators provide internal relief
that limits the total outlet pressure buildup over

setpoint. This internal relief may be adequate for

the application, if not, provide additional pressure

relief or a pressure-limiting device downstream.

Regulators should be inspected for damage after
any overpressure condition.

WARNING

!

To avoid personal injury or property
damage due to explosion or
damage to regulator or downstream
components during startup, release
downstream pressure to prevent
an overpressure condition on the
diaphragm of the regulator.

In order to avoid an overpressure
condition and possible equipment
damage, pressure gauges should
always be used to monitor pressures
during startup.

Taking Out of Service (Shutdown)

WARNING

!

To avoid personal injury resulting from
sudden release of pressure, isolate
the regulator from all pressure before
attempting disassembly.

Parts List

Key Description

1 Spring Case Assembly

2 Lower Casing

3 Screen
4 Lever
5 Stem

6 Straight Pin
7 Machine Screw (2 required)
8 Closing Cap
9 Machine Screw (8 required)

10 Relief Valve Spring
11 Diaphragm

12 Pusher Post
13 Lower Spring Seat

14 Relief Spring Retainer
15 Body

16 O-Ring
17 Cap Screw (2 required)
22 Orice

23 Disc
25 Spring

26 Adjusting Screw

27 Information Label

31 Closing Cap O-Ring

2