Emerson Enardo 860 Series - User Manual

Enardo 860 and 960 Series Spring-Loaded
Pressure/Vacuum Relief Valve (ATEX Approved)
Table of Contents
Introduction .................................................................. 1
Specifications .............................................................. 2
Product Identification and Marking .............................. 4
Principle of Operation .................................................. 4
Installation ................................................................... 5
Maintenance ................................................................ 9
Weight Information .................................................... 11
Valve Repair .............................................................. 11
▲
WARNING
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
re and/or chemical contamination
causing property damage and personal
injury or death.
Fisher™ spring-loaded pressure/vacuum
relief valve must be installed, operated
and maintained in accordance with
federal, state and local codes, rules
and regulations, and Emerson Process
Management Regulator Technologies
Tulsa, LLC (Emerson) instructions.
Failure to correct trouble could result in
a hazardous condition. Call a qualied
service person to service the unit.
Installation, operation and maintenance
procedures performed by unqualied
person may result in improper adjustment
and unsafe operation. Either condition may
result in equipment damage or personal
injury. Only a qualied person shall install
or service the spring-loaded pressure/
vacuum relief valve.
Figure 1. Enardo Model 860 Spring-Loaded Pressure/
Vacuum Relief Valve
Figure 2. Enardo Model 960 Spring-Loaded Pressure/
Vacuum Relief Valve
Introduction
Scope of the Manual
This Instruction Manual provides instructions for
installation, maintenance and parts ordering information
for the Enardo 860 and 960 Series spring-loaded
pressure/vacuum relief valve (SL-PVRV).
Instruction Manual
D103814X012
February 2022
Enardo 860 and 960 Series
Outside North America Only

Summary

Introduction to Enardo 860 and 960 Series

Scope of the Manual

Outlines the manual's purpose for installation, maintenance, and parts ordering.

Specifications for Enardo 860 and 960 Series

Construction and Connection Options

Details available construction choices and inlet connection sizes.

Pressure and Vacuum Specifications

Specifies operational pressure and vacuum ranges for the relief valves.

Materials and Certifications

Covers valve component materials and ATEX certification standards.

Product Description

Product Identification and Marking

Hazardous Locations and Nameplate

Explains valve markings, nameplate details, and materials for hazardous locations.

Principle of Operation

Installation Procedures

Installing Spring-Loaded Pallets

Step-by-step guide for installing valves with spring-loaded pallets.

Installing Weight-Loaded Pallets

Instructions for installing valves with weight-loaded pallets.

Maintenance Guidelines

Enardo 860 Series Pipe-Away Maintenance

Procedures for maintaining the Enardo 860 Series pipe-away valve.

Enardo 960 Series Vent to Atmosphere Maintenance

Procedures for maintaining the Enardo 960 Series vent-to-atmosphere valve.

Weight Information

Valve Repair

Emerson Enardo 860 Series Specifications

General

Brand	Emerson
Model	Enardo 860 Series
Category	Control Unit
Language	English