Marwin Valve 3T3100 Series 3-Way Brass Аква техника - Manual (Page 2)

Maintenance
Before starting maintenance, please read information
contained in the Caution Section of the manual.
Operate the ball valve at least once to release the 1.
pressure completely from valve body.
Ball valves, if correctly used, normally do not need any
2.
internal lubrication and maintenance. However, when
necessary, ball or seats can be replaced by qualified
personnel following the instructions of this manual.
Valve Disassembly
Note: The 3T3100/3L3200 Series ball valves are not
designed for rebuilding, nor is it economical to do
so. Should the valve leak, complete replacement is
recommended.
Troubleshooting
A. Steam Leakage
You can eliminate leakage in the stem area by increas-
ing the torque on the gland nut in one-quarter incre-
ments. If leakage persists, replace valve.
B. Body Seal Leakage
Check the torque of the end cap. If leakage persists,
replace valve.
C. In Line or Seats Leakage
Check to be sure valve is in fully closed position. If leak-
age persists, the valve must be replaced.
Installation
The ball valves may be installed in any position using
standard pipe fitting practices.
Caution: Before installation of the valve:
Pipe must be free of tension both during and 1.
after installation.
Pipe must be flushed to clean dirt, welding resi- 2.
dues, etc. which would damage ball or seats.
The valve should be kept in OPEN POSITION 3.
during installation and protective plastic covers
must be removed only at the moment of installa-
tion.
Before shipment, the ball is lubricated with a pure 4.
Vaseline oil. This can be easily removed with an
application compatible solvent if required.
If the valve was specified to be tested per ANSI 5.
16.34, there may be some trapped water between
the ball and the body cavity. This can be removed
by partially opening the valve, thereby exposing
the cavity to the through port of the ball.
Special care should always be taken when 6.
installing automated ball valves that the ball is in
the proper position.
 Installation of Threaded-Ends
Unless otherwise specified, pipe threads are Ameri- 1.
can National Standard Taper Pipe Threads (NPT)
per ANSI B1.20.1 and require that a pipe sealant be
used.
Install valve using standard piping practices. 2.
When tightening valve, apply wrench to the end cap near- 3.
est the pipe being worked on.
Manual Operation
 3T3100 Series
The 3T3100 Series provides a “T” arrangement at the 0°
and 180° position allowing flow in each direction. The
90° position provides a “T” arrangement, which allows
flow from the bottom in both directions simultaneously.
There is no stop at 90° position.
 3L3200 Series
The 3L3200 Series provides a “L” port arrangement at
the 0° and 180° position allowing flow in each direction.
Flow is shut off at the 90° position. There is no stop at
the 90° position.
3170 Wasson Road • Cincinnati, OH 45209 USA
Phone 513-533-5600 • Fax 513-871-0105
[email protected] • www.marwinvalve.com
Bulletin IM-3T3100/3L3200-0608
Port Configuration
A B C
BL1
0° 90° 180°
A B C
BL3
0° 90° 180°