RESILIENT-SEATED CARTRIDGE STYLE
FNW7XX
BUTTERFLY VALVE
INSTALLATION INSTRUCTIONS
FNW.COM
We reserve the right to modify or improve the designs or
specifications of our products at any time without notice.
1
FNW resilient-seated Butterfly Valves have been designed and manufactured for fluid control handling in suitable
mechanical systems. This instruction manual includes installation, operation and maintenance information for the
FNW resilient-seated butterfly valve. It is important to read and understand the following instructions to assure safe
and trouble-free operation. Failure to follow these instructions may result in reduced valve performance and void
manufacturer's warranty. This manual addresses manually operated valves, including lever and gear operated only.
For complete actuation, options and accessories information, consult the specific device’s manual.
SCOPE:
The purpose of this manual is to ensure that the valves
supplied are properly installed, handled, operated and
maintained to give trouble-free performance.
This manual covers FNW resilient-seated butterfly valves.
NOTES:
•
Read the manual carefully before removal, installation,
maintenance or operation of the valve.
•
Refer to general arrangement drawings to identify the
design, as valves may vary in features and parts.
•
Pay attention to warnings and illustrations carefully.
TABLE OF CONTENTS
General Safety .......................................................... 2
General Information ................................................. 2
Transportation ........................................................... 2
Packing and Unpacking .......................................... 2
Storage ........................................................................ 3
Pre-Installation .....................................................3–5
Installation Considerations in Piping ................... 6
Installation ............................................................. 7–9
Operation ..................................................................10
Maintenance .......................................................10–11
Precautions Before Disassembling
the Valve from the Line ..........................................12
Removal of Valve from Piping ..............................12
Troubleshooting ................................................ 13–14
Part Information ................................................15–16
U-Section Part Information ................................... 17
Butterfly Valve Assembly ......................................18
Butterfly Valve Disassembly.................................19
Warranty ...................................................................20