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

Document No.：KE-1081-02 Page:1/76

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)

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)

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

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

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