Fisher 112 Installation Guide Manuals & Guides

Installation Guide
D103056X014

English – July 2017

Type 112

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 112 Instruction Manual, D103237X012.

PED Categories

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 information on the
current PED revision see Bulletin: D103053X012.

PRODUCT SIZE CATEGORIES FLUID TYPE

1/4 NPT SEP 1

Specifications

Maximum Inlet Pressure and Pressure Drops

Restrictor: 1500 psig / 103 bar

Flow Coefficients

Restrictor: See Table 1

Construction Materials

Body: CB7Cu-2 Stainless steel
Groove Valve: 416 Stainless steel
Retainer: 416 Stainless steel
Pipe Plug: 316 Stainless steel
O-ring: Fluorocarbon (FKM)

Proof Test Pressure

All Pressure Retaining Components have been
proof tested per Directive.

(1)

Installation

WARNING

!

Only qualied 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 uid 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.

Table 1. Restrictor Flow Coefficients

SET ON START SET ON RUN

C

g

6 0.17 1 0.03 35

C

V

C

g

C

V

C

1

Personal injury, equipment damage or

leakage due to escaping uid 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
Specications 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 could result in personal injury
and property damage due to escaping

uid. 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.

Startup and Adjustment

The Type 112 restrictor controls the regulator’s
proportional band (droop) and speed of response. The
restrictor can be used to fine tune the regulator for
maximum performance by decreasing the restrictor
setting for tighter control (increased opening speed,
decreased closing speed); or increasing the restrictor
setting for maximum stability (decreased opening
speed, increased closing speed). A lower setting
also provides a narrower proportional band for better
accuracy. The START position has the largest flow, is
most stable, and easiest for startup, however, using
the START position is not necessary. The “0” setting
has the smallest (minimum) flow passage; at no point
of rotation will the Type 112 restrictor be completely
shut off. After initial adjustment, the restrictor does not
need to be adjusted for maintenance or startup.

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

Type 112

Taking Out of Service (Shutdown)

WARNING

!

To avoid personal injury resulting from
sudden release of pressure, isolate

the restrictor from all pressure before

attempting disassembly.

Parts List

Key Description

14 Pipe Plug
21 Body
22 Groove Valve
23 Retainer
24* Groove Valve O-ring

*Recommended spare part

20B4393-D

APPLY LUBRICANT

14

22

23

21

24

Figure 1. Type 112 Restrictor Assembly

[e-mail]

Fisher.com

Emerson Automation Solutions

Americas
McKinney, Texas 75070 USA
T [phone]

[phone]

Europe
Bologna 40013, Italy
T [phone]

For further information on the current
PED revision see Bulletin: D103053X012
or scan the QR code.

Facebook.com/EmersonAutomationSolutions

LinkedIn.com/company/emerson-automation-solutions

Twitter.com/emr_automation

Asia Pacic

Singapore 128461, Singapore
T [phone]

Middle East and Africa

Dubai, United Arab Emirates
T [phone]

D103056X014 © 2002, 2019 Emerson Process Management Regulator
Technologies, Inc. All rights reserved. 01/19.
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Electric Co. All other marks are the property of their prospective owners.
Fisher™ is a mark owned by Fisher Controls International LLC, a
business of Emerson Automation Solutions.

The contents of this publication are presented for information purposes
only, and while effort has been made to ensure their accuracy, they are
not to be construed as warranties or guarantees, express or implied,
regarding the products or services described herein or their use or
applicability. All sales are governed by our terms and conditions, which
are available on request. We reserve the right to modify or improve the

designs or specications of our products at any time without notice.

Emerson Process Management Regulator Technologies, Inc does not
assume responsibility for the selection, use or maintenance of any
product. Responsibility for proper selection, use and maintenance of any
Emerson Process Management Regulator Technologies, Inc. product
remains solely with the purchaser.