Marwin Valve FW4700 Series Boiler Feedwater Valve - Manual

3170 Wasson Road • Cincinnati, OH 45209 USA
Phone 513-533-5600 • Fax 513-871-0105
[email protected] • www.marwinvalve.com
I & M FW4700F Series
Installation & Maintenance Instructions for
Marwin FW4700F Series Boiler Feedwater Ball Valve
Warning: Marwin Valve ball valves must only be used, installed and repaired in accordance with these Installation & Maintenance Instructions.
Observe all applicable public and company codes and regulations. In the event of leakage or other malfunction, call a qualified service person;
continued operation may cause system failure or a general hazard.
Please read these instructions carefully!
Your Marwin Valve product will provide you with long,
trouble-free service if it is correctly installed and main-
tained. Spending a few minutes now reading these
instructions can save hours of trouble and downtime
later. When making repairs, use only genuine Marwin
Valve parts, available for immediate shipment from the
factory.
Scope & Applicability
This manual is intended as a guide to assist
customers in the storage, installation, and
maintenance of Marwin FW4700F boiler feedwater ball
valves. Subsequent additions or special instructions
will be provided for special valves, critical service or
customer requirements.
The Marwin boiler feedwater valve consists of a Marwin
CV4760 3-piece ball valve with a 60° V-port, and a side
mounted Honeywell Mod I electric actuator connected by
a linkage.
Caution
1. Valve pressure ratings are based on many variables,
including valve series and size, as well as body,
seat and bolt material. Verify that application does
not exceed the pressure or temperature rating on
the nameplate.
2. Always depressurize the line with the valve in the
open position before disassembly. Cycle valve in
depressurized line before removing valve.
3. Wear protective equipment and take appropriate
precautions to safeguard against injury caused by
the discharge of trapped fluids.
4. Use only Marwin recommended spare parts for
maintenance.
5. To ensure safety and maintain warranty, never
modify valve in any way without prior approval from
Marwin.
Storage
Valve -
See applicable valve I & M manual, such as CV4700
manual.
Unit -
Valve/actuator must be stored in dry conditions.
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