VPro Z User manual

OSYZX23B-EN
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NIPPON VALVE CONTROLS, INC.
Instruction manual
Manual
B
utterfly
V
alve
Z
SP-1519
Please read this document before using these valves.
GENERAL
This series is suitable for main or bypass valve in piping system.
Manual operation
Push lever
Valve
Z type It is small, light weight and economical butterfly valve.
This type designed for 3 piece structure
and it is easy to maintenance.
Threaded End Rc Socket End
PRODUCT CODE
Z type Threaded End Rc M A C Z - Y - 5 T U - -
Socket End (PVC) M A C Z - Y - 7 T P - -
(C-PVC) M A C Z - Y - 7 T H - -
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
(1) Actuator
MAC
(2)
Valve
Z-
(3) Operation
Y : Push lever
(4) Hyphen
(5) Connection
5 : Threaded End Rc
7 : Socket End
(6) Body material
T : SCS13A
(7) Cap material
U : SCS14A
(7) Socket material
P : PVC
H : C-PVC
(8) Seat material
E : EPDM
B : NBR
V : FKM
(9) Size [mm]
ex. 25A ® 025
(10) Option

OSYZX23B-EN
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VALVES SPECIFICATIONS
Water Oil Air, Gas Steam Chemicals Sea water Slurry Negative pressure
Valve type Z
Design 3 piece structure
Connection Threaded End Rc Socket End
Fluid
Max pressure 1 MPa
Size [mm] 015 to 050
Material Body SCS13A
Disc PPS
Cap SCS14A -
Socket - PVC C-PVC
Seat EPDM NBR FKM
Stem seal O-ring Depend on seat material
SEAT MATERIAL GUIDE
Seat material Fluid temp. Use
EPDM -20 to +80 °C
NBR -10 to +60 °C
FKM -0 to +90 °C
Note) • EPDM seat cannot be used for oil.
• Unsuitable for steam or hot water over 80 °C.
• Can flow the seawater with PVC socket and
EPDM sheet.
PRESSURE & TEMPERATURE RATING
Valve seat Cap / Socket
INHERENT FLOW CHARACTERISTIC
Cv
value
(%)
Valve opening
(%)
Range ability 30:1

OSYZX23B-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
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
Please check the product code before installation.
INSTALLATION
PRECAUTIONS
• Flush the pipeline carefully before installing the valve.
Foreign particles, such as sand or pieces of welding
electrode, will damage the disk and seats.
• When piping the valve disk should be closed before
mounting.
• Avoid oil or grease when using EPDM seat.
PIPING
• Using a pipe with too long a thread will damage the
valve.
• If sealing tape or sealant gets inside the valve, the
valve seat leaks or malfunctions.
• When connecting a pipe or fitting to a valve, use a tool
on the octagonal or hexagonal part of the insertion
side and screw it.
• Refer to the recommended tightening torque table and
do not apply excessive torque.
Valve size [mm] Torque [Nm]
015 25 to 35
020 40 to 50
025 50 to 60
032 60 to 80
040 75 to 85
050 90 to 110
Socket End
Should use adhesive suitable for valve materials.
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.
MANUAL OPERATION
Please open and close the valve while pushing the
lever handle.
Excessive force may damage the lever handle.
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 leak from valve stem.
• Confirm the fluid temperature or pressure.
TROUBLE SHOOTING
Problem Cause Solution
Stop in the
mid position.
Biting of valve
seat.
Remove a foreign
object.
Leakage
from
valve seat
Seat is worn or
damaged.
Replace the valve.
Leakage
from
valve stem
Packing is worn
or distorted.
For more information contact
NIPPON VALVE CONTROLS, INC. for consultation.