VPro MA Series User manual

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NIPPON VALVE CONTROLS, INC.
Instruction manual
MA
-
SERIES
B
all
Valve
G
S
SP-1531
Please read this manual before installation and use.
GENERAL
This series is suitable for original or bypass valve in
piping system.
The plate of position indicator is newly designed.
It's very easy to recognize even from a distant
place.
The position of manual handle can be changed, so
this valve can be installed in any piping systems.
Manual operation
Lever
Gear
Valve
GS type For Wafer. (JIS 10K / 20K)
Lever Gear
PRODUCT CODE
GS type (V-port) M A - G S L - 3 U U V -
(Full port) M A - G S - 3 U U - -
(Standard port) M A - G S - 3 U U R -
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
(1) Actuator
MA-
(2)
Valve
GS
(3) Manual operation
L : Lever
G : Gear
(4) Hyphen
(5) Connection
3 : JIS 20K
(6) Body material
U : SCS14A
(7) Ball material
U : SCS14A
(8) Seat material
G : R-PTFE
K : PEEK
I : API
C : R-PEEK
M : SUS316 + Stellite
(9) Size [mm]
ex. 25 A ® 025
(10) Option
LA : Limit switch for OPEN / SHUT signal.

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VALVES SPECIFICATIONS
Water Oil Air, Gas Steam Chemicals Sea water Slurry Negative pressure
GS type
Valve type GS
Design 2-way, Wafer
V-port Full port Standard port
Connection JIS Flanges 10K / 20K
Fluid
Max pressure 2 MPa
Size [mm] V015 to V032 015 to 080 R040 to R150
Material Body SCS14A
Ball SCS14A (HCr plated)
Seat R-PTFE PEEK API R-PEEK SUS316 + Stellite
Stem seal Packing R-PTFE
Note) API cannot be used with steam fluid.
PRESSURE & TEMPERATURE RATING
Note) • Option for use in fluid temperature more than 170 °C.
• We prefer to K seat depends on pressure or environmental
conditions. Please consult us for your specifications.
SEAT LEAKAGE VOLUME (JIS B 2005-4)
Seat material Leakage rate Remarks
G R-PTFE None
K PEEK
I API
C R-PEEK 10
- 4
× rated Cv value × 10
- 3
or less. Class IV × 10
- 3
or less.
R-PEEK (V-port) 10
- 4
× rated Cv value × 10
- 3
× 8 or less. Class IV × 10
- 3
× 8 or less.
M SUS316 + Stellite 10
- 4
× rated Cv value or less. Class IV or less.
SUS316 + Stellite (V-port) 10
- 4
× rated Cv value × 8 or less. Class IV × 8 or less.
INHERENT FLOW CHARACTERISTIC
Cv value (%)
Valve opening (%)
Range ability
GS-3UU V 015 to 032 50:1 (V-port)
GS-3UU - 015 to 080 200:1 (Full port)
GS-3UU R 040 to 150 100:1 (Standard port)

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INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
MANUAL LEVER DIMENSIONS
Valve size [mm] Lever [mm] Hex bolt
L H A
V15
V20
15
20 - 115 36 9
M5×15
V25
V32
25
32 R40 145 46 11
- 40
50
R50
R65 220 52 14 M6×15
- 65
80
R80
R100 320 55 17 M8×15
- - R125
R150 430 60 22 M10×20
HANDLING OF MANUAL LEVER
• The lever handle is removed and shipped.
• The lever mounting direction can be changed in units
of 45 degrees.
• Do not apply excessive torque to the lever.
• Do not strike or extend the lever with a tool.
GEAR DIMENSIONS
Valve size [mm] K [mm] Actuator
65
80
R80
R100 150 MAG-F07
- R125
R150 300 MAG-F10
HANDLING OF GEAR
• The handle wheel of the gear is removed and
shipped.
• Insert the handle into the gear shaft.
• Insert a pin into the hole in the handle.
L
H
A
Butterflynut
BoltLever
Stem
OPEN/SHUT
indicator
φK
OPEN SHUT
Handle
Pin

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INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
HANDLING & STORAGE
HANDLING
Do not drop or throw the product as it may break.
STORAGE
• Store away from dust, moisture and direct sunlight.
If possible, store in the original package.
• Do not remove a dust proof cap until the piping.
CHECKING
• Check the product code before installation.
• Make sure that the bolts are not loose.
HANDLING OF MANUAL OPERATION
• Be careful about temperature of a lever / handle part,
when using it for the fluid of the high temperature or
low.
• Avoid the operation with bare hands, and make a
protective measure.
• For manual operation, loosen the butterfly nut before
operating. After operation, tighten the butterfly nut to
secure the position.
INSTALLATION
PRECAUTIONS
• Flush the pipeline carefully before installing the valve.
Foreign particles, such as sand or pieces of welding
electrode, will damage the ball and seats.
• For valves with specified flow direction (GS) , check
the arrows on the product before piping.
PIPING FLANGES
• Gasket should be selected appropriately to suit the
fluid, pressure and temperature.
Use spring washer to prevent from decreasing surface
pressure gasket when the temperature change
happens frequently.
• Tighten all bolts using crossover method to load the
joint evenly.
• Wafer type ball valve is put between two seats of
flanged-end and tightened with long bolts. (GS)
ENVIRONMENT
If there is a possibility that the fluid and drive part
freeze, please take measures to prevent freezing.
POSITIONING
Should be positioned through 90° upward from
horizontal. Provide space around the product to allow
manual operation, inspection and replacement work.
CAUTIONS FOR MAINTENANCE
Do not keep warm for maintenance of the valve gland.
TIGHTEN THE GLAND NUTS
• Check that there is no leakage from the gland
packing.
• If it leakage, tighten gland nuts by alternately.
Do not over-tighten the gland nuts.
Valve size [mm] Recommended
torques [Nm]
V15
V20
15
20 - 2
V25
V32
25
32 R40 3.5
- 40
50
R50
R65 7
- 65
80
R80
R100 10
- - R125
R150 14
MAINTENANCE
Do the routine maintenance at least once in half a
year.
Inspection items
• Confirm operation of opening and closing.
• Confirm whether screws are loose or not.
• Confirm the fluid temperature or pressure.
• Confirm the leak from valve stem.
• Confirm the bolt tightening torque.
Gland nut
Gland plate
Stem

OSYGS23B-EN
Document is subject to change without notice.
NIPPON VALVE CONTROLS, INC.
1-21-19 Meieki minami, Nakamura-ku, Nagoya 450-0003 JAPAN
TEL: [phone] FAX: [phone]
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INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
TROUBLESHOOTING
Problem Cause Solution
Stop in the
mid position.
• Biting of
valve seat.
• The scale
has adhered
to the valve
ball.
Remove a foreign
object.
Leakage
from
valve body
• Valve cap get
loose.
• Valve body is
damaged.
Replace the valve.
Leakage
from
valve seat
Seat is worn
or damaged.
Replace the valve.
Replace the seat.
Leakage
from
valve stem
Stem packing is
worn or
distorted.
Replace the valve.
Replace the packing.
Leakage
from
valve gland
Gland packing
is worn or
distorted.
Tighten the gland nut.
Replace the gland
packing.
For more information contact
NIPPON VALVE CONTROLS, INC. for consultation.