Emerson Fisher Type 289P - User Manual

Type 289P
D102680X012
Instruction Manual
Form 5481
February 2009
www.emersonprocess.com/regulators
Type 289P Pilot-Operated Relief Valve
Introduction
Scope of Manual
This manual describes and provides instructions
and parts lists for the Type 289P pilot-operated relief
valve. Instructions and parts lists for any other Fisher
®
equipment used with this relief valve will be found in
separate manuals.
Product Description
The Type 289P pilot-operated relief valve is used to
provide protection from overpressuring a downstream
system. This relief valve is suitable for service on
natural gas, air, propane, or any other operating
medium not corrosive to the internal parts. Smooth
opening action minimizes system pressure surges
during emergency action. Very little build-up over set
pressure is required to completely open the main valve
for maximum relief capacity. The external control line
provides quick, accurate pressure registration.
Specications
Some of the specications for a given relief valve as
it comes from the factory appear on the nameplate
attached to the Type 289P main valve spring case.
Other specications appear on the Type 6358B or
6365 pilot spring case.
Figure 1. NPS 1 Type 289P Pilot-Operated Relief Valve Figure 2. NPS 2 Type 289P Pilot-Operated Relief Valve
W6834
W3167-2

Emerson Fisher Type 289P Specifications

General

Brand	Emerson
Model	Fisher Type 289P
Category	Control Unit
Language	English

Summary

Introduction

Scope of Manual

Outlines the manual's coverage of the Type 289P relief valve and related equipment.

Product Description

Details the Type 289P relief valve's function, application, and operating characteristics.

Specifications Overview

Mentions where specifications are found on the nameplate and pilot spring case.

Specifications

Body Size and End Connection Style

Specifies available body sizes and connection types for the relief valve.

Maximum Relief (Inlet) Pressure

Defines the maximum allowable inlet pressure for different NPS sizes.

Relief Set Pressure Ranges

Indicates the available ranges for setting the relief pressure.

Pilot Information

Refers to tables containing details about the pilot types used.

Pressure Registration

Specifies how pressure is registered by the valve.

Pilot Control Line and Vent Connections

Details the connection types for control lines and vents.

Relief Valve Temperature Capabilities

Lists the temperature limits for different seal materials (NBR and FKM).

Approximate Weights

Provides the typical weights for NPS 1 and NPS 2 valve sizes.

Principle of Operation

Installation

Startup and Shutdown

Pilot Adjustment

Maintenance

Main Valve Disassembly

NPS 1 Type 289 P Main Valve Disassembly

Step-by-step instructions for disassembling the NPS 1 main valve.

NPS 2 Type 289 P Main Valve Disassembly

Step-by-step instructions for disassembling the NPS 2 main valve.

Main Valve Assembly

NPS 1 Type 289 P Main Valve Assembly

Step-by-step instructions for assembling the NPS 1 main valve.

NPS 2 Type 289 P Main Valve Assembly

Step-by-step instructions for assembling the NPS 2 main valve.

Type 6358 B Pilot

Type 6358 B Pilot Disassembly

Procedures for taking apart the Type 6358B pilot.

Type 6358 B Pilot Assembly

Procedures for reassembling the Type 6358B pilot.

Type 6365 Pilot

Type 6365 Pilot Disassembly

Procedures for taking apart the Type 6365 pilot.

Type 6365 Pilot Assembly

Procedures for reassembling the Type 6365 pilot.

Parts Ordering

Main Valve Parts List

Lists components and their part numbers for the Type 289P main valve.

Type 6358 B Pilot Parts

Type 6358 B Pilot Parts List

Detailed list of parts for the Type 6358B pilot with part numbers.

Type 6365 Pilot Parts

Type 6365 Pilot Parts List

Detailed list of parts for the Type 6365 pilot with part numbers.