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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.
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
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.
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.
