Flowserve FlowTop V726 Istruzioni per l'installazione

Disassembly / Reassembly Instructions

FlowTop

V726, V738, V740

All manuals and user guides at all-guides.com

Schmidt Armaturen

AI - FlowTop

Contents Page

1. Purpose 3

2. Use 3

3. Description of the Procedure 3

4. Disassambling the Valve 3 - 4

5. Subassembly - Body 5 - 28

6. Subassembly - Trim 30 - 32

7. Subassembly - Bonnet 34 - 59

8. Subassembly - Packing 61 - 62

9. Technical Tables - Tightening Moments 64 - 65

10. Special Tools 67

CAUTION !

The Control Valve must only be disassembled and reassembled by qualied sta. Qualied sta is

dened as personnel who are familiar with the disassembling, reassembling, installation and commis-

sioning of this product and possess the relevant qualications in their eld of activity.

Follow the relevant Installation and Operating Instructions during installing, commissioning and oper-

ating !

Follow these Disassembly / Reassembly Instructions and only use original Spare Parts, as well as the

recommended Special Tools in order to guarantee perfect function and reliablity of this product.

Failure to comply with these Disassembly and Reassembly Instructions will render the manufacturer's

guarantee and liability null and void. Unless otherwise agreed, the manufacturer's General Terms and

Conditions of Sale shall apply.

All manuals and user guides at all-guides.com

Schmidt Armaturen

AI - FlowTop

1. Purpose

These instructions give guidelines on valve repair.

2. Use

Type: FlowTop Valve Type: V726

V738

V740

3. Description of the Procedure

CAUTION !

Only remove the Control Valve from the pipe in a depressurised and cooled / heated

state !

3.1 Disconnect air supply from the assembled accessories or actuator

3.2 Disassembling any accessories assembled

3.3 Disassembling the actuator from the valve

CAUTION !

In the event that the control valve is contaminated by toxic operating media, it must

be cleaned using the best possible available procedure !

   Thepotentialhazardsourcesareundertheoperator'sinuence.Hemusttherefore

observe the national and international environmental conditions for removal from the

pipe and cleaning ! The permissible limit values are to be kept as suitable protective

measures and the service personnel are to be instructed.

3.4 Before disassembling:

• Are suitable securing devices available ?

The valve is "barrel shaped" and has a tendency to tip ! This can lead to injuries or damage !

• Do the recommended Wearing / Spare Parts exist ?

Should these be missing an attempt at repair not be completed successfully !

• Are suitable tools available ?

Improper use of tools can lead to damage the parts. It is possible that the valve is not working !

All manuals and user guides at all-guides.com

Schmidt Armaturen

AI - FlowTop

Data Field 1

The series number is in this  eld. It is made up

e.g. as follows:

0620278001001

062 06 = Calendar year 2006

2 = Order ( 1 = Quotation )

0278 = consecutive series number

001 = Item within the series number

001 = ascending quantity within the item

The series number and the "part" required must

always be quoted when ordering Spare Parts.

Alternatively you can order using the part no. in

the Spare Parts List at your own risk.

Telephone: 0043 4242 41181 - 0

e-mail: schmidt@owserve.com

Data Field 2 and 3

These  elds clearly identify the:

• Body Type (Page 5)

• Trim Type (Page 30 - 32)

• Bonnet Type (Page 34 - 36)

• Packing Type (Page 61 - 62)

marked in detail. This helps you to  nd the steps

described at the end.

Rating plate "Type IT"

Rating plate "Type PB"

4. Disassembling the valve

4.1 Fix the valve on the disassembly table !

4.2 Identify the valve using the rating plate:

A rating plate is  tted on every control valve for identi cation. In principle there are

two di erent rating plates, their information content is however identical.

• Rating plate "Type IT" for pneumatic linear actuators with internal air conduction.

• Rating plate "Type PB" for pneumatic linear actuators with external air conduction.

All manuals and user guides at all-guides.com

Schmidt Armaturen

AI - FlowTop

Body Type Data Field 2 Data Field 3 Page

Three Flange V7xx DxVNA - 7 - 9

Four Flange V7xx VxVNA - 11 - 15

Mixing V7xx WxVNA MOTP2LG 17 - 21

Distributing V7xx WxVNA VOTP2LG 23 - 28

All manuals and user guides at all-guides.com

Schmidt Armaturen

AI - FlowTop

All manuals and user guides at all-guides.com

Schmidt Armaturen

AI - FlowTop

Disassembly

Step 01

• Unscrew hexagon nuts (1.4)

Reassembly

Step 01

• Grease stud screws

CAUTION !

Lubrication as per Table 06 (Page 65)

• Screw hexagon nuts in place (1.4) and tighten in a

diagonally opposite sequence using the torque wrench

CAUTION !

Nut tightening moment (1.4)

as per Table 01 (Page 64)

When tightening the nuts pay attention to the

alignment of the plug ( do not rub or insert the

plug in the open / closed movement )

• Tighten the hexagon nuts of the gland (3.6)

using the torque wrench

CAUTION !

Tightening moment of the hexagon nuts (3.6)

as per Variant drawing (Page 61 - 63)

Three Flange Valve

SPM - Code : V7xx DxVNA

All manuals and user guides at all-guides.com

Schmidt Armaturen

AI - FlowTop

Disassembly

Step 02

• Unscrew hexagon nuts (3.6)

• Remove washer (3.8) and gland ﬂ ange (3.4)

Reassembly

Step 02 not applicable

Arranging the packing unit see Step 0 7

Disassembly

Step 03

• Twist Special Tool (Ring-nut) on the stem

and put in place slowly

CAUTION !

Ensure it hangs vertically !

• Remove ﬂ at gasket (1.2)

CAUTION !

Remove remains of ﬂ at gasket (1.2)

in the body and on the bonnet.

Do not damage sealing surface !

Reassembly

Step 03

After work step "Reassembly" Ste p 06

• Insert  at gasket (1.2)

CAUTION !

   Usenewatgasket(1.2)!

• Twist Special Tool (Ring-nut) on the stem

and put in place slowly

CAUTION !

Ensure it hangs vertically !

All manuals and user guides at all-guides.com

Schmidt Armaturen

AI - FlowTop

Reassembly

Step 04

• Insert Special Tool (change seat - tool) in the body

(Ensure that the pin clicks in place!) and tighten using the

torque wrench

CAUTION !

Tightening moment for the screwed seat (2.1)

as per Table 02 (Page 64).

Disassembly

Step 04

• Insert Special Tool (change seat - tool) in the body

(Ensure that the pin clicks in place!) and remove using a

suitable tool

Disassembly

Step 05

• Remove screwed seat (2.1) and proﬁ le ring (2.5)

CAUTION !

Remove proﬁ le ring remains (2.5) in the body.

Do not damage sealing surface !

Reassembly

Step 05

Reassembly takes place in reverse order.

CAUTION !

Clean parts

Check screwed seat, thread in the body and

sealing surface for damage.

   Usenewprolering(2.5)!

• Insert pro le ring (2.5) in the body, grease the thread

screwed seat (2.1) and screw in by hand

CAUTION !

Lubrication as per Table 06 (Page 65)

All manuals and user guides at all-guides.com

Schmidt Armaturen

AI - FlowTop

All manuals and user guides at all-guides.com

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