Kitz T60S/SF Series Bedienungsanleitung
Document No.：KE-1081-02
Operation Manual
For
API 6D, 3 piece, Trunnion Mounted Ball Valve
Soft and Metal seated
T60S/SF, UF3TCS Series
T60M/SF, UF3TC6H Series
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-1081-02 Page:1/76
This manual applies to manual operation of KITZ flanged ends manual operated soft and
metal seated API 6D, 3 piece, trunnion mounted ball valve series.
CAUTION AND WARNING
To ensure safe and trouble-free function and performance, please read all the contents of
this manual before handling, transportation, mounting and operation of the valves. Keep this
manual to the place accessible to the operator.
The signal words “WARNING” and “CAUTION” are defined as follows:
Indicating potentially hazardous conditions, which may result in
serious injury to personnel, if such warnings shall be ignored.
Indicating potentially hazardous conditions, which may result in
injury to personnel or only property damage, if such cautions shall
be ignored.
Indicates prohibition of an action.
Indicates mandatory implementation of an action.
NOTES TO USERS
This manual covers normal usage of our products. The technical data for operation, maintenance
and inspection of the products 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 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-1081-02
Index
Page
Ⅰ. Construction and Design features ・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1
Ⅱ. Shipping, Handling and Storage ・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7
Ⅲ. Valve installation ・・・・・・・・・・・・・・・・・・・・・・・・・・ 10
Ⅳ. Valve operation ・・・・・・・・・・・・・・・・・・・・・・・・・ 15
Ⅴ Periodic inspection ・・・・・・・・・・・・・・・・・・・・・・・・・・ 21
Ⅵ Disassembly and Reassembly Soft seat ・・・・・・・・・・・・・・・・・・・・・・・・・・ 26
Ⅶ. Disassembly and Reassembly Metal seat ・・・・・・・・・・・・・・・・・・・・・・・・・・ 51
Ⅷ. Trouble shooting ・・・・・・・・・・・・・・・・・・・・・・・・・ 75
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Ⅰ. Construction and Design feature
Document No.：KE-1081-02 Page:2/76
Ⅰ． Construction and Design features
1. Construction and Design features
1.1 Construction and parts names are as illustrated next page.
1.2 The valve can be operated by rotating the stem by 90 degrees to open or shut.
1.3 The valve is designed for use in the full open or full closed position only.
1.4 The valve for size up to NPS4 for full bore and up to NPS6 for reduced bore have two
stems, at the top and bottom, supporting the ball, the design of which gives the valve
less impact on operation torque.
1.5 The valve for size NPS6 and larger for full bore and size NPS8 and larger for reduced
bore have two trunnion plates, at the top and bottom of the ball, supporting the ball,
the design of which gives the valve less impact on operation torque.
1.6 The valve is a bi-directional valve.
Document No.：KE-1081-02 Page:3/76
Ⅰ． Construction and Design features
1.7 Typical construction for Soft seated valve.
This illustration shows typical construction for size up to NPS4.
This illustration shows typical construction for size NPS6 and larger.
Stem
Packing (Graphite)
O-ring with back up ring
Gasket (Graphite)
Gasket (Graphite)
Packing (Graphite)
O-ring with back up ring
Seat spring
Ball
Ball seat
Seat retainer
Gasket (Graphite)
End plate
Stem
Packing (Graphite)
O-ring with back up ring
Gasket (Graphite)
Gasket (Graphite)
Packing (Graphite)
O-ring with back up ring
Seat spring
Trunnion plate
Ball
Ball seat
Seat retainer
Document No.：KE-1081-02 Page:4/76
Ⅰ． Construction and Design features
1.8 Typical construction for Metal seated valve.
This illustration shows typical construction for size up to NPS4.
This illustration shows typical construction for size NPS6 and larger.
Stem
Coned disc spring
Packing (Graphite)
Gasket (Graphite)
Packing (Graphite)
Seat spring
Ball
Ball seat
Retainer gland
Gasket (Graphite)
Stem
Coned disc spring
Packing (Graphite)
Gasket (Graphite)
Packing (Graphite)
Seat spring
Ball
Ball seat
Retainer Gland
Gasket (Graphite)
End plate
Document No.：KE-1081-02 Page:5/76
Ⅰ． Construction and Design features
2. Design features
2.1 Double block and bleed function.
The ball seat is provided on the upstream and downstream, which independently
function to seal the media. Consequently the valve bore and the body cavity are
isolated from each other when the valve is fully opened or shut so that the residue
within the body cavity may be disposed through the drain port.
Soft seated design features Metal seated design features
2.2 Excessive cavity pressure relief mechanism
Seal is made on the upstream side by the seat retainer whose seat spring pushes
the ball seat against the ball at fully shut position. In case the line fluid trapped in
the body cavity evaporates and causes excessive rise in the cavity pressure for
some reasons, especially when the cavity pressure exceeds the line pressure, the
ball seat will move slightly away from the ball surface to relieve the excessive cavity
pressure into the valve bore.
Soft seated Metal seated
Cavity pressure
Ball seat
Li
Cavity pressure
Seat retainer
Ball seat
Body
Ball Line pressure
Ball seat Packing
O-Ring
Seat spring
Cap
Seat retainer Ball
Seat spring
Body
Packing
Cap
Ball seat
Retainer gland
Line pressure
Document No.：KE-1081-02 Page:6/76
Body
Bleeder
Plug
Ⅰ． Construction and Design features
2.3 Fire safe design
When the ball seats are decomposed or deteriorated by a fire, the edge of the metal
seat retainer preloaded by the seat spring comes into contact with the ball to shut
off the fluid to minimize internal leakage through the valve bore.
And also, metal seated design is composed of noninflammable materials, which is
suitable for fire safe design.
2.4 Drain or vent port
The valve has the block and bleed structure that allows a valve
or other types of connection to be installed at the drain or vent
port though which the fluid in the cavity can be discharged.
Gasket (Graphite)
Packing (Graphite)
Before After
Internal leakage prevention
External leakage prevention
Packing
(Graphite)
O-Ring
Gasket
(Graphite)
AfterBefore
Document No.：KE-1081-02 Page:7/76
Ⅱ. Shipping, Handling and Storage
Dieses Handbuch passt für folgende Modelle
3
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