Emerson Fisher 1B Installation Instructions

Instruction Manual

D100639X012

Fisherr 1B and 1BR Constant‐Pressure Pump
Governor Actuators

Figure 1. Fisher 1B Actuator on Direct‐Acting easy‐e™ Valve

1B Actuator

April 2011

W2232‐1

Introduction

Scope of Manual

This instruction manual provides information on installation, adjustment, maintenance, and parts ordering for the
Fisher 1B pump governor actuator. Refer to separate instruction manuals for information about the valve and other
accessories used with these actuators.

Do not install, operate, or maintain a 1B pump governor actuator without being fully trained and qualified in valve,
actuator, and accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is
important to carefully read, understand, and follow all the contents of this manual, including all safety cautions and

www.Fisher.com

1B Actuator

April 2011

Instruction Manual

D100639X012

warnings. If you have any questions about these instructions, contact your Emerson Process Management sales office
before proceeding.

Description

The 1B pump governor actuator (figure 1) is used to maintain a constant discharge pressure on steam driven turbine
or reciprocating pumps and for pressure reducing or pressure relief applications. Typical pump governor applications
include fire pumps, boiler feedwater pumps, and industrial or refining pumps where the discharge medium is oil,
steam, air, or other noncorrosive fluid.

The 1BR pump governor actuator is combined with a push‐down‐to‐open valve for service as a relief governor. A relief
governor is used to divert excess pump discharge to the suction side of the pump.

Installation

WARNING

Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal
injury.

Personal injury or equipment damage caused by sudden release of pressure may result if the valve assembly is installed
where service conditions could exceed the limits given on the appropriate nameplates. To avoid such injury or damage,
provide a relief valve for over‐pressure protection as required by government or accepted industry codes and good
engineering practices.

Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.

If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.

CAUTION

When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature,
pressure drop, and controlled fluid conditions. Responsibility for the safety of process media and compatibility of valve
materials with process media rests solely with the purchaser and end‐user. Since some valve body/trim material
combinations are limited in their pressure drop and temperature ranges, do not apply any other conditions to the valve
without first contacting your Emerson Process Management sales office.

The 1B pump governor can be installed either above or below the line but if possible it should be installed above it.

CAUTION

Thoroughly clean and blow out all pipe scale and other foreign matter. It is recommended that a Fisher strainer be installed
in the line ahead of the main valve to protect the governor while in service.

If continuous operation is desired during inspection or maintenance, install a conventional three‐valve bypass around
the governor.

2

Instruction Manual

D100639X012

1B Actuator

April 2011

Refer to figure 2.

1. Using good piping procedure install the governor with flow in the direction of the arrow cast on the valve body.

2. Run a 1/4 inch control line from the top of the governor to the side or top of the pump discharge line, about 10 feet
from the pump. Install a pressure gauge and a large port needle valve in this line. Throttling this needle valve places
a restriction in the control line to smooth out operation.

Figure 2. Fisher 1B Installation

FISHER FRE-FLO STRAINER

FISHER 1B
PUMP GOVERNOR

NEEDLE VALVE

PUMP DISCHARGE

SUCTION

AC4650

Note

Before putting the governor into operation, be sure to remove the plastic shipping plug in the vent hole of the adaptor piece.

3. Open the gate valve on the downstream side and close the valve in the bypass line.

4. Slowly open the upstream gate valve.

5. Allow the governor sufficient time to assume normal operation before checking the controlled pressure. If the
governor is not controlling at the set point needed, make the necessary changes as directed in the section entitled
Adjustments.

Adjustments

The pump governor has been factory set for the operating conditions stated in the order. To change the pump
discharge, use the adjusting screw (key 3). To increase the discharge pressure, turn the adjusting screw into the yoke.

3