Kitz XJ Manuale utente
Document No.：KE-2010-04
Operation Manual
For
XJ TYPE BUTTERFLY VALVE
(WAFER TYPE)
Thank you for having chosen KITZ products.
For safe and trouble-free function and performance of the
product, make sure 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-2010-04
This manual applies to the KITZ manual XJ type butterfly valve of wafer type.
For electric or pneumatic valve operation, refer to the operation manual of relevant valve actuators
prepared by the manufacturers.
CAUTION AND WARNING
To ensure safe and trouble-free function and performance of the product, please read all items of
this manual before handling, mounting and operation of the units.
The items listed here are indicated to prevent personal injury and product damages.
Please follow the cautions described here.
The signal words “WARNING”and “CAUTION”are defined as follows:
Indicates an imminently 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 and product damages.
Indicate prohibition of an action.
Indicate mandatory implementation of an action.
NOTES TO USERS
This manual is designed to show an appropriate usage of products for transportation, storage,
installation, operation and maintenance.
Ensure to read the manual before starting any of transportation, storage, installation, operation,
maintenance, and handling valves. Also ensure to read the operation manual (No. D36) enclosed
with the product in the package.
This manual does not cover the whole scope of conceivable usage of products for transportation,
storage, installation, operation and maintenance. If technical assistance beyond the scope of this
manual is required, contact KITZ Corporation or its distributors.
The specifications for transportation, storage, installation, operation and maintenance described in
this manual have been determined with valve maintenance taken into consideration. DO NOT use
products beyond the specifications.
The illustrations given in this manual do not introduce all details. If more detailed data are required,
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-2010-04
C O N T E N T S
Sheet
ⅠConstruction and Design Features ················································· 1
ⅡValve Operation Device······································································ 6
ⅢTransportation and Storage of Valves·········································· 9
ⅣValve Installation··················································································· 12
ⅤValve Operation····················································································· 16
ⅥPeriodic Inspection··············································································· 20
ⅦDisassembly and Reassembly of Valves ······································ 24
Document No.：KE-2010-04 Sheet:1/40
CHAPTER Ⅰ
Construction and Design Features
Document No.：KE-2010-04 Sheet:2/40
ⅠConstruction and Design Features
XJ Butterfly Valves
1. Construction and Function
1.1 The valve design and the name of the parts are shown below.
1.2 90rotation of the stem opens and closes the valve.
1.3 Butterfly valve is serviceable in fully open, closed and intermediate position for volume control.
1.4 XJ type butterfly valve has center drive mechanism.
1.5 The bi-directional flow is available for butterfly valve.
Long-Neck Short-Neck
Stem
Rubber Seat
Disc
Disc
Bottom Stem
Stem
Rubber Seat
Stem
Disc
Bottom Stem
Rubber Seat
Document No.：KE-2010-04 Sheet:3/40
ⅠConstruction and Design Features
2. General Feature
2.1 Selectable Neck Design
Neck design can be selected from 2 types of long and short as required.
2.2 Interchangeability to JIS Products
It complies with JIS B 2032 standardized for butterfly valve. It should be interchangeable to the
JIS standard existing butterfly valve. And gear-operated valve complies with public building
operation, too. (nominal diameter 50～300A)
2.3 Improved Operability
Light body of aluminum alloy die-casting is made alignment easy.
2.4 Supportable to Various Fluid
Stainless-steel (SCS14A) disc and EPDM seat are provided as standard items which are applicable
to various fluids. （But EPDM seat can’t be used for oil.）
2.5 Stable Operating Torque
Application of bearing prevents the stem galling and realizes stable operating torque.
2.6 Easy Mounting of Various Actuators
Actuator mounting flange complies with ISO 5211, so actuators can be mounted directly to the
valve body.
2.7 High Performance of Condensation Prevention
The longneck type is provided with condensation preventive system. Heat insulation work at gear
will be unnecessary and condensation will be prevented at chilled water line. (as for gear-operated
valve.)
[Rubber Seat]
Improved stability by rib-reinforced spherical surface seat
①Wide seal valve seat: High-performance wide seal structure
is adopted.
②Rib-reinforced seat: Providing rib in rubber seat prevents
misalignment from the position and separation caused by
friction to the disc or load of fluid.
③Stem seal: Stabilized sealing performance by thrusting into
bearing..
④Flange seal surface (no need for gasket)
Document No.：KE-2010-04 Sheet:4/40
ⅠConstruction and Design Features
[S Shape Valve Disc]
Spherical disc and it contacts the seat internal evenly
3. Valve Specification and Pressure-Temperature Rating
3.1 Valve Specification
3.1.1 Maximum allowable pressure: 1.0 MPa
3.1.2 Service temperature range: from 20C to +120C
(See PT chart for more details)
3.1.3 Continuous operation fluid temperature range: from 0C to +100C
3.1.4 Face to face dimension: JIS B 2032 (46 series)
3.1.5 Shell test pressure (hydrostatic): 1.5 MPa
3.1.6 Seat test pressure (hydrostatic): 1.1 MPa
3.2 Pressure-Temperature Rating. (P-T Rating)
Operational Pressure
Temperature
1.0
0.7
0.5
Document No.：KE-2010-04 Sheet:5/40
ⅠConstruction and Design Features
4. Size and Number of Mounting Bolt and Nut
JIS 10K
Valve Size
No.
Nominal Size
Length (L)
mm
inch
mm
40
11/2
4
M16
85
50
2
4
M16
95
65
21/2
4
M16
105
80
3
8
M16
105
100
4
8
M16
110
125
5
8
M20
120
150
6
8
M20
125
200
8
12
M20
130
250
10
16
M22
150
300
12
16
M22
160
5. Minimum Inside Diameter of Applicable Pipes
Never apply the pipes with smaller inside diameter than the figures shown in the following table. That
will cause unwanted contact of the valve disc with the pipe ends.
Valve Size
Pipe Inside Dia.
mm
inch
mm
40
11/2
28
50
2
30
65
21/2
50
80
3
70
100
4
90
125
5
116
150
6
144
200
8
194
250
10
244
300
12
292
Hexagonal Bolt and Nut (L=mm)
Document No.：KE-2010-04 Sheet:6/40
CHAPTER Ⅱ
Valve Operation Device
Document No.：KE-2010-04 Sheet:7/40
ⅡValve Operation Device
1. Lever Handle Type
1.1 The lever handle is directly mounted on the valve.
1.2 Turning the lever handle 90clockwise will close the valve, and turning the lever handle 90
counterclockwise will open the valve.
Fluid Flow Direction
Fluid Flow Direction
OPEN
CLOSE
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