Original Instructions
Installation, Operation
&Maintenance Manual
Sentry VREL Control Valve
Pressure Conditioning
S-SW-IOM-00277-15 1-17
2 Sentry Equipment Corp
Do not install, maintain, or operate this equipment without reading,
understanding, and following the appropriate Sentry Equipment Corp
instructions. Otherwise, injury, damage, or both may result.
Copyright
© 2016 by Sentry Equipment Corp. All rights reserved. All product and company names
are property of their respective owners. This document contains proprietary information.
No part of this document may be photocopied or reproduced without the prior written
consent of Sentry Equipment Corp.
Limit of Liability
Sentry Equipment Corp, its employees, agents, and the authors and contributors to this
document speci cally disclaim all liabilities and warranties, express or implied (including
warranties of merchantability and tness for a particular purpose), for the accuracy,
currency, completeness, and/or reliability of the information contained herein and/or
for the tness for any particular use and/or for the performance of any material and/or
equipment selected in whole or part with the user of/or in reliance upon information
contained herein. Selection of materials and/or equipment is at the sole risk of the user of
this publication.
Note
The information contained in this document is subject to change without notice.
Table of Contents
Safety Information ......................... 3
General Safety Precautions ................. 4
Overview .................................. 5
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operation .................................. 7
Replacement Parts ......................... 8
Standard Warranty .........................10
Customer Support .......................... 11
Sentry VREL Control Valve 3
Safety Information
Please read the entire manual before attempting to unpack, set up, or operate this
product. Pay careful attention to all Warnings, Cautions, and Notes. Failure to do so could
result in serious personal injury and/or equipment damage.
Use of Hazard Information
If multiple hazards exist, the signal word corresponding to the greatest hazard shall be
used.
De nitions
DANGER indicates a hazardous situation
which, if not avoided, will result in death or
serious injury.
WARNING indicates a hazardous situation
which, if not avoided, could result in death or
serious injury.
CAUTION, used with the safety alert symbol,
indicates a hazardous situation which, if not
avoided, could result in minor or moderate
injury.
NOTICE is used to address practices not
related to personal injury.
 NOTE
Information that requires special emphasis.
 TIP
Alternate techniques or clarifying information.
SHALL:
This word is understood to be mandatory.
SHOULD:
This word is understood to be advisory.
4 Sentry Equipment Corp
General Safety Precautions
Product Selection, Installation, and Use
Improper selection, installation, or use can cause personal injury or property damage. It is solely
the responsibility of users, through their own analysis and testing, to select products suitable
for their speci c application requirements, ensure they are properly maintained, and limit their
use to their intended purpose.
Follow proper local, state, and federal regulations for proper installation and operational
requirements.
Always use caution and common sense when working with any chemical. Read the product
label and Material Safety Data Sheets (MSDS) carefully and follow the instructions exactly.
Potential Equipment Hazards
Hot surfaces! This equipment may have very hot surfaces. If an operator contacts a hot surface,
injury may occur. Use protective clothing to prevent injury. If other equipment comes in contact
with a hot surface, damage to the equipment may occur. Ensure the area around this equipment
is kept clear to prevent this damage from occurring.
High pressures! This equipment may contain uids at very high pressures. Prior to installing,
removing, or maintaining this equipment, ensure that the equipment is isolated from all
connecting piping, the equipment is depressurized, the contents have been drained, and the
equipment is cool.
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