Marwin Valve MS3000 Series High Performance Valve User Manual

I & m ms3000 series, Scope, Applicability

3170 Wasson Road • Cincinnati, OH 45209 USA

Phone 513-533-5600 • Fax 513-871-0105

I & M MS3000 Series

Installation & Maintenance Instructions for

Marwin MS3000 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. 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

This manual is intended as a guide to assist customers in the
storage, installation, and maintenance of Marwin MS3000 Se-
ries ball valves. Subsequent additions or special instructions will
be provided for special ball valves, critical service, or customer
requirements.

Applicability

This manual is applicable to the MS3000 Series Marwin ball
valves.

Caution

To help prevent injury to personnel or damage to equipment,
please read this section completely before performing any op-
erations.

Valve pressure ratings are based on many variables, in-

cluding 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.
ALWAYS

depressurize the line with the valve in the OPEN

position before disassembly.

Wear protective equipment and take appropriate precau-

tions to safeguard against injury caused by the discharge
of trapped fluids.
Use only Marwin recommended spare parts for mainte-

nance.
To ensure safety and maintain warranty, never modify

valve in any way without prior approval from Marwin.

Storage

A petroleum based 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:

If possible, leave the ball valves in their packing cases

during the period of storage.
Ball valves must remain in open position during this time.

In order to prevent damage, protective plastic covers on

valve ends should not be removed until immediately prior
to installation.
It is advisable to store the valves in waterproof condi-

tions. Ball valves should be protected to safeguard
against humidity, moisture, dust, dirt, sand, mud, salt
spray and seawater.
All valves complete with actuators are to be stored in dry

conditions.
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.
After cleaning, ball valves must be lubricated with an ad-



equate lubricant.
Ball valves should be operated for at least two complete



cycles before installing or returning to storage.

Installation

The ball valves may be installed in any position using Standard
Pipe Fitting Practice.