Flowserve Trunnball Manual do Utilizador descarregar pdf (Página 1)

NAF-Trunnball ball valves

Maintenance and installation instructions

List of spare parts

Fi 41.66(2)GB

08.

Contents

SAFETY

General 1

Lifting 2

Receiving inspection 3

Installation 4

Flange gaskets 5

Starting up 6

Ordering of spare parts 7

Maintenance 8

To remove the valve from the pipework 8.1

To inspect and replace the ball and seatrings 8.2

Valves with seatrings in PTFE 8.3

Valves with chromium-plated ball and

seatrings in alloy 6 8.4

Valves with ball and seatring in alloy 6 8.5

To change the stem bearing and packing box type 8.6

PSDCL, i.e type 898_EF-XXXX-BABADA

To change the upper stem sealing with o-rings 8.7

i.e. type 898_95-XXXX.

To change the stem bearing and sealing i.e. type 8.8

898_95-XXXX.

Mounting the actuator to the valve 8.9

SAFETY

- Assess all the risks to eliminate the risk of personal

injury and material damage. Read these instructions

thoroughly!

- Always use the necessary protective equipment

and comply with applicable safety directives when

working with hazardous or hot/cold medium.

- Never operate a valve without ﬁ rst ensuring that there

is no risk of crush injuries. The risk is highest with

automatic valves.

- Take necessary safety precautions to prevent

unintentional manoeuvre - i.e to atmosphere.

- Never dismantle a valve or part of a valve without

ensuring that the line is free of pressure and any

content.

- Ball valves must always be dismantled in semi-open

position to avoid trapping pressure and medium.

- Always check that the valve type and material is

suitable for its intended use. This applies especially to

highly oxidising and corrosive medium. Observe also

the risk of erosion and explosion as well as decaying

medium. If in doubt, always request a written

recommendation from NAF AB.

1. General

This instruction is valid for NAF-Trunnball ball valves in

accordance with catalogue sheet Fk 41.66 GB.

2. Lifting

All lifting must be made in

the valve itself and not in the

actuator. The joint between

the valve and the actuator

is designed principally for

carrying the operating torque

and the deadweight of the

actuator (see Fig. 1).

Fig. 1. Lifting of the valve

3. Receiving inspection

All valves leaving our works are inspected and tested

in accordance with the relevant requirements or in

accordance with the special conditions speciﬁ ed by the

customer. Valves equipped with actuators are subject to

functional testing and are adjusted in such a manner that

every unit is completely ready for direct installation in

the pipework. However, in view of damage that may have

occurred during transport, it is advisable that receiving

inspection is performed, if possible.

We would suggest the following inspection procedure:

- Check that the

valve delivered is correct in

terms of type, size, equipment, etc

- Examine the valve, actuator and valve positioner

regarding possible damages

1 2 3 4 5 6 7 8

Resumo do Conteúdo

Página 1 - Fi 41.66(2)GB

NAF-Trunnball ball valvesMaintenance and installation instructionsList of spare partsFi 41.66(2)GB08.09Contents SAFETYGeneral

Página 2 - 6. Starting up

24. InstallationBefore installing the valve, ensure that the pipework is free from impurities, that the pipe ends between which the valve is to be in

Página 3 - Stem Sealing

3127893456172223252415182813261211161424252342232343330296932312425252124430 319Stem SealingAlloy 6PTFEType 898_EF-XXXX-BABADAFig. 3NAF-Trunnball Spar

Página 4 - Spare parts

47. Ordering of Spare PartsWhen placing orders for spare parts, specify:1. Product code of the valve, incl. DN according to Fk 41.66 and the manuf

Página 5 - 8. Maintenance

53. Shut off all compressed air connections and isolate all electrical connections to the actuator.4. Disconnect all compressed air lines and e

Página 6

68.4 Valves with chromium-plated ball and seatrings in alloy 61. Check the sealing surfaces of the seatrings. A groove on the inside of the

Página 7

78.7 Change of the upper stem sealing with o-rings (DN450-DN800) i.e. type 898295-XXXXChange the upper o-ring (32) if the stem sealing is leaking.It

Página 8 - ISO 9001 Certiﬁ ed

8 NAF AB SE-581 87 Linköping Telephone +46 13 31 61 00 Facsimile +46 13 13 60 54 e-mail [email protected]: www.na

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Flowserve Trunnball Manual do Utilizador Página 1

Consulte online ou descarregue Manual do Utilizador para Hardware Flowserve Trunnball. Flowserve Trunnball User Manual Manual do Utilizador

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