Cameron WKM Installation, Operation And Maintenance Manual

TOV

Installation, Operation and Maintenance Manual 1 WKM-TOV-IOM

Installation, Operation and Maintenance Manual

3”-24” 150/300/600 CLASS

WKM

®

- TRIPLE OFFSET VALVE

WKM

®

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Installation, Operation and Maintenance Manual 2 WKM-TOV-IOM

TABLE OF CONTENTS

List of components 3
Catalog number information 4
Nameplate information 4
Scope 5
Storage 5
Installation 5
Flow direction 5
Shaft position 5
Disc/pipe clearance 6
Disc protrusion length inside pipe 7
Procedure 8
Worm gear operated 8
Valve position verification 12
Routine maintenance 13
Troubleshooting guide 13
Packing maintenance 14
Sealing elements maintenance 15
Bottom cap gasket maintenance 17
Mounting Operators 18
Torque charts 19

© Cameron’s Valves & Measurement Segment Released 07/2018 WKM-TOV-IOM

Notes:

This manual is a general representation of the information required for correct usage of the CAMERON WKM® TOV
valve. More specific information is available and can be supplied per customer request. CAMERON valve reserves
the right to amend this document, with no prior notice. Please reference the applicable drawing and/or parts list
when using this IOM manual.

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Installation, Operation and Maintenance Manual 3 WKM-TOV-IOM

List of components

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Catalog number information

Figure number:
The figure number shown below identifies specific valve configuration details of WKM® Triple
Offset Valves such as valve type, pressure class, end connections, body/bonnet and trim
materials, and special features.

Nameplate information

1. Valve size

2. Valve class

3. Seal material See for reference nameplate drawing below.

4. Body material

5. Disc material

6. Shaft material

7. Flange type

8. Figure number

9. Serial number

10. Maximum CWP

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Shaft position

WKM® Triple Offset Butterfly Valves perform equally well
with the shaft in the vertical or horizontal position. Cameron
recommends that the optimum valve installation is with the
shaft in the horizontal plane.

Installing the valve with the shaft at an angle will minimize
any problem associated with solid particles present in the
fluid that otherwise could deposit in the lower bearing area.

Scope

The WKM® Triple Offset Valves are metal seated
butterfly valves. They are designed and manufactured in
a manner that allows the disc to rotate into and out of
the seat with absolutely no interference. This results in a
sealing system that does not depend upon interference
to achieve the seal like other butterfly valves.

Storage

After assembly and test, WKM® Triple Offset Valves
are placed in the closed position. Carbon steel valves
are painted on the external surfaces. Flange
protection is provided for all valves. Valves should be
stored in a clean, dry location. Outdoor storage is
permissible, but should be off the ground and
protected from the elements. For long term storage,
contact your Cameron representative.

Installation

Although WKM® Triple Offset Butterfly Valves have bi­directional sealing capabilities and will operate in any
position, the following positions are generally
recommended.

Flow direction

It is preferred to install the valve in the flow direction
as indicated by the arrow on the valve body. The best
sealing performance will be maintained even when
pressure acts on the non-preferred side of the valve,
however it is recommended to install the valve in the
direction of the flow arrow when the service tightness
requirements are more stringent in one specific
direction (Figure 1).

Figure 1: Flow direction

Flow direction

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Disc/pipe clearance

Before beginning installation, note the following:

Disc/pipe clearance should be checked before
beginning installation to avoid the possibility of
scraping on the seal ring edge on the pipe I.D. and
damaging the sealing surface. Chamfer is
recommended on the pipe flange.

Minimum pipe I.D. required for disc swing clearance:
Class 150 valves - Standard pipe or equivalent
Class 300 valves - Schedule40/XS pipe or equivalent
Class 600 valves - Schedule 100 pipe or equivalent
Consult Table 1 - Disc clearance for required flange
modifications for other pipe schedules (Figure 2).

Table 1 – Disc Clearance

Figure 2: Disc/pipe clearance

Pipe Flange