VAREC
7100B SERIES PRESSURE RELIEF VALVE
INSTRUCTION, OPERATION AND MAINTENANCE MANUAL
DISCLAIMER OF WARRANTIES
The contract between Emerson Automation
Solutions (Emerson) and our customer states
Emerson entire obligation. The contents of
this instruction manual shall not become part
of or modify any prior or existing agreement,
commitment or relationship between Emerson
and our customer. There are no express or
implied warranties set out in this instruction
manual. The only warranties that apply are
those in the existing contract between Emerson
and our customer.
The Varec 7100B Series pressure relief valve
has not been tested by Emerson under all
possible operational conditions and Emerson
does not have all the data relative to your
application. The information in this instruction
manual is not all inclusive and does not and
cannot take into account all unique situations.
Consequently, you should review this product
literature in view of your application. If you have
any further questions, please contact Emerson
for assistance.
Emerson.com/FinalControl
© 2017 Emerson. All rights reserved.
D104515X012 19/08
Before installation, these instructions must be read carefully and understood.
LIMITATIONS OF SELLER’S LIABILITY
If it is determined that this instruction manual
created some new warranties, Emerson liability
shall be limited to repair or replacement under
the standard warranty clause. In no case
shall Emerson liability exceed that stated as
Limitations of Remedy in the contract between
Emerson and our customer.
SAFETY PRECAUTIONS
Read and understand this instruction manual
before installing, operating or performing
maintenance on 7100B Series pressure relief
valves. Follow all precautions and warnings
noted herein when installing, operating or
performing maintenance on this equipment.
WARNING
Relief valve must be isolated from tank pressure
before servicing. All gas must be blocked and
pressure safely vented.
Safety precaution definitions
CAUTION
Damage to equipment may result if this
precaution is disregarded.
WARNING
Direct injury to personnel or damage to
equipment which can cause injury to personnel
may result if this precaution is not followed.
GENERAL INFORMATION
The 7100B Series pressure relief valves are
designed to protect low pressure storage
tanks, sludge digesters and gas holders from
excessive pressure. The valve is installed on the
storage tank roof or digester cover and relieves
excessive pressure directly to the atmosphere.
A weatherhood and mesh screen protect the
pallet and guideposts.
FIGURE 1. 7100B SERIES
TABLE OF CONTENTS
Disclaimer of Warranties �����������������������������������1
Limitations of Seller's Liability ��������������������������1
General Information �������������������������������������������1
Safety Precautions ���������������������������������������������1
Product Identification and Marking �������������������2
Construction �������������������������������������������������������2
Operation ������������������������������������������������������������3
Installation ����������������������������������������������������������3
Maintenance �������������������������������������������������������4
Calibration ����������������������������������������������������������5
Dimensions and Weight �������������������������������������6
Replacement Parts ���������������������������������������������7
