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Please read these instructions carefully!
Your Marwin Valve product will provide you with long, trouble-
free service if it is correctly installed and maintained. Spend-
ing 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 immedi-
ate shipment from the factory.
Scope
3170 Wasson Road • Cincinnati, OH 45209 USA
Phone 513-533-7340 • Fax 513-533-7343
E-Mail: marwin@richardsind.com • www.marwinvalve.com
I&M 3000 Series
Installation & Maintenance Instructions for
Marwin 3000 Series Three Piece Ball Valves
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.
3. After depressurizing line, cycle valve open and closed to
depressurize valve before removal from line.
4. Wear protective equipment and take appropriate precautions
to safeguard against injury caused by the discharge of trapped
fluids.
5. Use only Marwin recommended spare parts for maintenance.
6. To ensure safety and maintain warranty, never modify valve
in any way without prior approval from Marwin.
Storage
A pure Vaseline oil (silicone free) is used as lubrication on all
internal surfaces. This may be removed with a solvent if
found objectionable. All valves are adequately packed in a
strong cardboard case in such a way as to avoid any possible
damage during transport and storage.
CAUTION: If ball valves are not destined for immediate use,
the following precautions should be taken:
1. If possible, leave the ball valves in their packing cases
during the period of storage.
2. Ball valves must remain in open position during this time.
3. In order to prevent damage, protective plastic covers on
valve ends should not be removed until immediately prior
to installation.
4. It is advisable to store the valves in waterproof conditions.
Ball valves should be protected to safeguard against
humidity, moisture, dust, dirt, sand, mud, salt spray, and
seawater.
5. All valves complete with actuators are to be stored in dry
conditions.
6. Valves to be stored for a long period of time should be
checked by the quality control personnel every six months;
every three months when valves are automated.
Maintenance During Storage Period
• Internal surface should be inspected to check for dust or
other foreign objects.
• Rust or dust must be removed by cleaning with proper
solvent.
This manual is intended as a guide to assist customers in the
storage, installation, and maintenance of Marwin 3000F/R
Series Ball Valves. Subsequent additions or special instruc-
tions will be provided for special ball valves, critical service, or
customer requirements.
Applicability
1. This manual is applicable to the 3000F/R Series Marwin
ball valves.
Caution
1. Valve pressure ratings are based on many variables, includ-
ing valve series and size, as well as body, seat and bolt
material. Verify that application does not exceed the pres-
sure or temperature rating on the nameplate.
2. ALWAYS depressurize the line with the valve in the OPEN
position before disassembly.