Emerson ACE95jr Installation Manual

Installation Guide
D102774X014

July 2020

Type ACE95jr

Introduction

This installation guide provides instructions for
installation,startup and adjustment. To receive a copy
of the instruction manual, contact your local Sales
Office or view a copy at www.fisher.com. For further
information refer to: Type ACE95jr Tank Blanketing
Valve Instruction Manual, D10274X012.

PED Category

This product may be used as a safety accessory
with pressure equipment in the following Pressure
Equipment Directive categories. It may also be used
outside of the Pressure Equipment Directive using
sound engineering practice (SEP) per table below.
For more information on the current PED revision,
see Bulletin: D103053X012.

PRODUCT SIZE CATEGORIES FLUID TYPE

DN 15 to 25 / NPS 1/4 to 1 SEP 1

Specications

Size and End Connection Style

1/2 NPT
1 x 1/2 NPT
1 NPT
NPS 1/2 / DN 15, CL150 RF
NPS 1 / DN 25, CL150 RF
NPS 1 x 1/2 / DN 25 x 15, CL150 RF
NPS 1 / DN 25, Sanitary Flange

Maximum Operating Inlet Pressure

13.8 bar / 200 psig

Maximum Emergency Outlet (casing) Pressure

1.4 bar / 20 psig

Maximum Operating Control Pressures

0.10 bar / 1.5 psig

Control Pressure Ranges

(1)

-12 mbar to 0.10 bar /

-5 in. w.c. to 1.5 psig in six ranges

Proof Test Pressure

(1)

All Pressure Retaining Components have been
proof tested per Directive

Temperature Capabilities

(1)

Nitrile (NBR): -29 to 82°C / -20 to 180°F
Fluorocarbon (FKM): -18 to 100°C / 0 to 212°F
Ethylenepropylene (EPDM-FDA):

-29 to 100°C / -20 to 212°F

Peruoroelastomer (FFKM):

-29 to 100°C / -20 to 212°F

(1)

(1)

(1)

Installation

WARNING

▲

Only qualified personnel should install
or service a regulator. Regulators should
be installed, operated and maintained

in accordance with international and

applicable codes and regulations, and
Emerson Process Management Regulator
Technologies, Inc. instructions.

If the regulator vents fluid or a leak
develops in the system, it indicates that
service is required. Failure to take the
regulator out of service immediately may
create a hazardous condition.

Personal injury, equipment damage, or
leakage due to escaping fluid or bursting
of pressure-containing parts may result
if this regulator is overpressured or
is installed where service conditions
could exceed the limits given in the
Specifications section, 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 limits.

Additionally, physical damage to the
regulator couldresult in personal injury
and property damage due to escaping
fluid. To avoid such injury and damage,
install the regulator in a safe location.

Clean out all pipelines before installation of the
regulator and check to be sure the regulator has not
been damaged or has collected foreign material during
shipping. For NPT bodies, apply pipe compound to

the external pipe threads. For anged bodies, use

suitable line gaskets and approved piping and bolting
practices. Install the regulator in any position desired,

unless otherwise specied, but be sure ow through

the body is in the direction indicated by the arrow on
the body.

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

Type ACE95jr

Note

It is important that the regulator be
installed so that the vent hole in the
spring case is unobstructed at all times.
For outdoor installations, the regulator
should be located away from vehicular
traffic and positioned so that water,
ice and other foreign materials cannot
enter the spring case through the vent.
Avoid placing the regulator beneath
eaves or downspouts, and be sure it is
above the probable snow level.

Overpressure Protection

The recommended pressure limitations are stamped
on the regulator nameplate. Some type of overpressure
protection is needed if the actual inlet pressure exceeds
the maximum operating control pressure rating.
Overpressure protection should also be provided if the
regulator inlet pressure is greater than the safe working
pressure of the downstream equipment.

Regulator operation below the maximum pressure
limitations does not preclude the possibility of damage
from external sources or debris in the line. The
regulator should be inspected for damage after any
overpressure condition.

Startup

The regulator is factory set at approximately
the midpoint of the spring range or the pressure
requested, so an initial adjustment may be required
to give the desired results. With proper installation
completed and relief valves properly adjusted, slowly
open the upstream and downstream shutoff valves.

Adjustment

To change the control pressure, remove the closing
cap or loosen the locknut and turn the adjusting
screw clockwise to increase control pressure or
counterclockwise to decrease pressure. Monitor
the control pressure with a test gauge during the
adjustment. Replace the closing cap or tighten the
locknut to maintain the desired setting.

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 Cap

2 Adjusting Screw

3 Lock Nut

4* O-ring

5 Spring Seat

6 Vent (Type Y602-A12)

7 Spring Case

8 Range Spring

9* Gasket

10 Diaphragm Plate (upper)

11* Diaphragm (main)

12* Gasket (actuator)

13 Diaphragm Retaining Nut

14* O-ring

15 Diaphragm Bolt

16* O-ring

18 Body

27* Gasket (bonnet/actuator)

28 Lock Washer

29 Hex-Head Machine Screw

30 Actuator Case (lower)

31 Hex Nut

33 Actuator Case (upper)

36 Spring (cage)

37 Piston

38* Rolling Diaphragm

39* O-ring

41* O-ring

42 Pilot (poppet)

48 Diaphragm Plate (lower)

52 Cage

162 Lower Range Spring

(negative pressure only, used with upper spring, key 8)

*Recommended spare part

2