Kitz 150 SCTBZ Series User manual

Document No.：KE-1027-00
Operation Manual
For
Ｔwo Peace Type Steel Ball Valves
150/300SCTBZ,UTBZ
（Flanged ends）
Thank you for having chosen KITZ products.
For safe and trouble-free function and performance of the
product, ensure to read and understand all items of this manual
before valve mounting and operation.
Keep this manual in a convenient place for your valve operators’
easy access.

Document No.：KE-1027-00
This manual covers the normal use of Class 150/300 SCTBZ/SCTBZM & UTBZ/UTBZM Series,
split body, side entry design floating ball valves manufactured by KITZ Corporation, as a general
guidance to users.
This manual is prepared for manual valve operation.
For electric or pneumatic valve operation, refer to the operation manual prepared by the
manufacturers of relevant valve actuators.
CAUTION AND WARNING
To ensure safe and trouble-free function and performance of the product, please read all items of
this manual before handling, transportation, mounting and operation of valves. Keep this manual
in a convenient place for your valve operations’easy access.
The signal words “WARNING”and “CAUTION”are defined as follows:
Indicates a potentially hazardous situation which, if not avoided, will result
in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, could
result in minor or moderate injury.
NOTES TO USERS
This manual covers the normal usage of the product. Technical data and instructions for operation,
maintenance and inspection of the product are prepared in consideration of safety. However, they
are good only to cover typical applications as a general guideline to users. If technical assistance
beyond the scope of this manual is required, contact KITZ Corporation or its distributors.
The illustrations given in this manual do not introduce all details. If more detailed data are needed,
refer to our relevant valve assembly drawings.
※Any information provided in this operation manual is subject to revision at any time without
notice. This edition cancels all previous issues.

Document No.：KE-1027-00
C O N T E N T S
Sheet
ⅠConstruction and Design Features ･･････････････････ 1
ⅡValve Operation Device ･････････････････････････････ 4
ⅢShipping, Handling and Storage of Valves ･･･････････ 7
ⅣValve Installation ･･････････････････････････････････ 10
ⅤValve Operation ･･･････････････････････････････････ 15
ⅥPeriodic Inspection and Maintenance of Valves ･･････ 20
ⅦDisassembly and Reassembly of valves ･････････････ 24

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CHAPTER Ⅰ
Construction and Design Features

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Ⅰ Construction and Design Features
1. Construction and Design Features
1.1 The typical valve design is as illustrated below.
1.2 Range of operation from full opening to full closing is 90°.
1.3 The ball is supported by both ball seats. When the valve is pressurized, the ball moves
against the downstream seat to complete the seal, shutting off flow of the line fluid.
1.4 This ball valve design may be used on applications where a bi-directional flow is needed.
This illustration represents a typical construction.

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Ⅰ Construction and Design Features
2. Design Features
2.1 Split Body, Side Entry Design
The valve is Split Body, Side Entry Design with the coupling flanges fastened by bolts and
nuts.
2.2 Fire safe provision
KITZ ball valves can be optionally provided with graphite packing and body to body-cap
flange gaskets for use in the areas of production facilities where external leakage may be
caused by plant fires. These graphite components will contain the line media where PTFE or
other lesser materials may burn away, feeding fuel increasing the magnitude of the fire. KITZ
ball valves provided with graphite sealing components are identified as the
SUPER-FIRESAFE version in our product catalogs.
The integral, secondary seats on the body and body-cap minimize internal leakage, when
resilient ball seats are deteriorated in case of a plant fire.
2.3 Anti-static provision
Anti-static devices are provided to ensure electrical continuity between ball, stem and body.
2.4 Valve Application
The ball valve may be used on application where a bi-directional flow is needed.
2.5 Actuator Mounting Pads
ISO 5211 actuator mounting pad is integrally provided for uniformity simplified mounting of
any actuators provided with valve mounting flanges designed to ISO 5211 dimensional
requirement.
2.6 Low Fugitive Emission Feature
The surface of stem and stuffing box, and interface clearance of stem-to-gland bush,
stem-to-body and gland-to-stuffing box are precision controlled on machining and assembly
for low emission service.

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CHAPTER Ⅱ
Valve Operation Device

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Ⅱ Valve Operation Device
1. Lever Type Operator
1.1 Levers are mounted directly on the valve stem.
1.2 Rotating the lever clockwise by 90 °will close the ball, and moving the lever
counterclockwise by 90°opens it.

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Ⅱ Valve Operating Device
2. Worm Gear Operator
2.1 The worm gear operator is mounted on the valve.
2.2 According to the arrow or letter on the handwheel, turning the handwheel clockwise closes
the valve, and turning the handwheel counterclockwise opens the valve.
2.3 Handwheel operating torque depends on the size and opening position.
2.4 Worm gear operator is to transmit a large torque to valve stems, converting a torque from
drive shaft by means of reduction gearing unit using worm gears.
.

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CHAPTER Ⅲ
Shipping, Handling and Storage of Valves