Flowserve VK 14 User Manual

GESTRA

GESTRA Steam Systems

VK 14
VK 16

Installation Instructions 818577-00

Vaposcope Sightglass
VK 14, VK 16



1

Contents

Page

Important Notes

Usage for the intended purpose ............................................................................................................. 4

Safety note ............................................................................................................................................ 4

Danger ................................................................................................................................................... 4

Pressure Equipment Directive (PED) ...................................................................................................... 4

Explanatory Notes

Scope of supply ..................................................................................................................................... 5

Description ............................................................................................................................................ 5

Function................................................................................................................................................. 5

Technical Data

Corrosion resistance .............................................................................................................................. 6

Sizing..................................................................................................................................................... 6

Name plate / marking ............................................................................................................................ 6

Design

VK 14, VK 16.......................................................................................................................................... 7

Key ........................................................................................................................................................ 8

Installation

Danger ................................................................................................................................................... 9

VK 14, VK 16 .......................................................................................................................................... 9

Design with flanges ............................................................................................................................... 9

Design with screwed sockets ................................................................................................................ 9

Design with socket-weld ends............................................................................................................. 10

2

Contents – continue –

Page

Commissioning

VK 14, VK 16........................................................................................................................................ 10

Operation

VK 14, VK 16........................................................................................................................................ 10

Maintenance

®

VK 14, DN 15, 20, 25: Replacing MAXOS

VK 14, DN 40, 50: Replacing MAXOS® safety sightglass ..................................................................... 11

VK 16, DN 15, 20, 25, 40, 50: Replacing MAXOS® safety sightglass ................................................... 11

Tools.................................................................................................................................................... 12

Torques ............................................................................................................................................... 12

A. F. ..................................................................................................................................................... 12

Spare Parts

Spare parts list .................................................................................................................................... 13

Decommissioning

Danger ................................................................................................................................................. 13

Disposal ............................................................................................................................................... 13

safety sightglass ............................................................... 11

Annex

Declaration of Conformity .................................................................................................................... 14

3

Important Notes

Usage for the intended purpose

VK 14, VK 16
Use Vaposcope sightglass only as sight flow indicators for monitoring flow in pipes.
Use this equipment only within the specified pressure and temperature ratings and check corrosion
resistance and chemical suitability for the application in question.

Safety note

The equipment must onyl be installed and commissioned by qualified staff.
Maintenance and service work must only be performed by adequately trained persons who have a

recognised level of competence.

Danger

The equipment is under pressure during operation.
When loosening flanged connections or sealing plugs, hot water or steam may escape.
This presents the danger of severe scalds to the whole body.
The equipment becomes hot during operation.
This presents the risk of severe burns to hand and arms. Installation and maintenance

work should only be carried out at room temperatures.
Before servicing the equipment or loosening flanged connections or sealing plugs

make sure that all connected lines are depressurised (0 bar) and the equipment has
cooled down to room temperature.

Sharp edges on internals present a danger of cuts to hands. Always wear industrial
gloves for installation and maintenance work.

Pressure Equipment Directive (PED)

The equipment fulfills the requirements of the Pressure Equipment Directive PED 97/23/EC.
For applications with fluids of group 2.
With CE marking (apart from equipment according to section 3.3).

4

Explanatory Notes

Scope of supply

VK 14

1 Vaposcope sightglass VK 14
1 Installation manual

VK 16

1 Vaposcope sightglass VK 16
1 Installation manual

Description

The GESTRA Vaposcope is a sight flow indicator specially designed for monitoring flow conditions in
pipelines. If installed upstream of steam traps the Vaposcope can be used for checking the traps for
steam loss or for banking up of condensate.

■ VK 14 sightglass PN 16

■ VK 16 sightglass PN 40

Function

The GESTRA Vaposcope has no moving parts. The sightglass permits visual inspection of condensate
conditions. Condensate or steam (gas) are directed through the water seal by the deflector. As the
specific gravity of steam is lower than that of condensate the steam passes over the condensate and
depresses the condensate level.

5

Technical Data

Corrosion resistance

When used for its intended purpose the safe functioning of the equipment will not be impaired by
corrosion.

Sizing

The body must not be subjected to sharp increases in pressure. The dimensional allowances for
corrosion reflect the latest state of technology.

Name plate / marking

For pressure and temperature ratings see indications on body or specifications on the name plate.
For more information refer to GESTRA technical literature, such as data sheets and Technical
Information.

According to EN 19 the following indications are stated on the name plate and the body:

■ Type designation

■ Pressure class PN or Class

■ Material number

■ Max. temperature

■ Stamp on body, e. g. specifies the quarter and the year of production

(Example: 4

th

quarter 2004).

4

04

Direction of flow

6

Size

Nominal
pressure

{

Max.
temperature

CE marking
(if required)

Nominal
pressure

Design VK 14, VK 16

E

Fig. 1

VK 14, DN 15-25

A

B

C

B

D

Fig. 2

VK 14, DN 40, 50
VK 16, DN 15–50

A

B

F

C

B

G

H

7

Key

Name plate

A

Sightglass gasket

B

MAXOS® safety sightglass

C

Spherical washer

D

Union nut

E

Mica disk (standard item with VK 16)

F

Flange

G

Hexagon-head cap screw

H

MAXOS® is a registered trademark of SCHOTT AG, Grünenplan, Deutschland

8

Installation

Danger

Danger of severe injuries, death and destruction caused by the explosion of explosive
gas-air mixtures.

An electrically insulated installation of the equipment between pipe flanges can cause
static electricity. If the equipment is to be installed in explosive-risk areas, appropriate
measures have to be taken in order to discharge static electricity (earthing)!

VK 14, VK 16

The Vaposcope should be installed in accordance with the flow direction arrow and upsteam of the
steam trap with the deflector pointing downwards. The equipment can be used in horizontal or
vertical pipelines without any modification.

Design with flanges

1. Take position of installation into account.

2. Observe the direction of flow. The flow arrow is on the name plate.

3. Consider space required for opening or servicing the equipment. When the Vaposcope is installed

a minimum space of 70 mm is required for replacing the sightglass

4. Remove plastic plugs. They are only used as transit protection.

5. Clean seating surfaces of both flanges.

6. Install Vaposcope.

C.

Design with screwed sockets

1. Take position of installation into account.

2. Observe the direction of flow. The flow arrow is on the name plate.

3. Consider space required for opening or servicing the equipment. When the Vaposcope is installed

a minimum space of 70 mm is required for replacing the sightglass

4. Remove plastic plugs. They are only used as transit protection.

5. Clean threads of screwed sockets.

6. Install Vaposcope.

C.

9

Installation – continued –

Design with socket-weld ends

1. Take position of installation into account.

2. Observe the direction of flow. The flow arrow is on the name plate.

3. Consider space required for opening or servicing the equipment. When the Vaposcope is installed

a minimum space of 70 mm is required for replacing the sightglass

4. Remove plastic plugs. They are only used as transit protection.

5. Clean socket-weld ends.

6. Apply arc welding processes 111 and 141 in accordance with ISO 4063.

Attention

■ Only qualified welders certified e. g. according to EN 287-1 may weld the equipment

into pressurised lines.

■ It is not necessary to remove the sightglasses before welding the equipment in

place. Only if an annealing process is applied remove the sightglasses beforehand.

C.

Commissioning

Make sure that the flanged connections of the VK 14, VK 16 are tightly bolted and leakproof.

Operation

With some operating modes VK 14 and VK 16 must be serviced. For more information see section
“Maintenance”.

10

Maintenance

The GESTRA sightglass Vaposcope VK 14/VK 16 does not require special maintenance. However, if
used in new installations which have not been rinsed the equipment should be checked and cleaned
after the commissioning procedure.

VK 14, DN 15, 20, 25: Replacing MAXOS® safety sightglass

1. Observe danger note on page 4.

2. Carefully unscrew union nuts
old safety sightglasses

3. Make sure that all old sightglass gaskets
the body.

4. Remove dirt and deposits from the sightglass body.

5. Insert new sightglass gaskets

6. Insert spherical washers
in the union nuts E.

7. Screw in union nuts

VK 14, DN 40, 50: Replacing MAXOS® safety sightglass

1. Observe danger note on page 4.

2. Unscrew hexagon-head cap screws
safety sightglasses

3. Make sure that all old sightglass gaskets
the body.

4. Remove dirt and deposits from the sightglass body.

5. Insert new sightglass gaskets

6. Apply heast-resistant lubricant to hexagon-head cap screws

7. Mount new sightglass gaskets
hexagon-head cap screws

8. Screw in hexagon-head cap screws

E with a torque of 130 Nm.

C.

E and remove spherical washers D, old sightglass gaskets B and

C.

B are completely removed from the seating surfaces of

B in the body.

D, new sightglass gaskets B and new MAXOS

®

safety sightglasses C

H and remove flange G, old sightglass gaskets B and old

B are completely removed from the seating surfaces of

B in the body.

H (e. g. WINIX 2150).

B and new MAXOS

®

safety sightglasses C with flanges G and

H.

H with a torque of 55 Nm.

VK 16, DN 15, 20, 25, 40, 50: Replacing MAXOS® safety sightglass

1. Observe danger note on page 4.

2. Unscrew hexagon-head cap screws
disks

F and old safety sightglasses C.

3. Make sure that all old sightglass gaskets
the body.

4. Remove dirt and deposits from the sightglass body.

5. Insert new sightglass gaskets

6. Apply heast-resistant lubricant to hexagon-head cap screws

7. Mount new sightglass gaskets
with flanges G and hexagon-head cap screws H.

8. Screw in hexagon-head cap screws
torque of 55 Nm.

WINIX® 2150 is a registered trademark of WINIX GmbH, Norderstedt

H and remove flange G, old sightglass gaskets B, mica

B are completely removed from the seating surfaces of

B in the body.

H (e. g. WINIX 2150).

B, new mica disks F and new MAXOS

H A. F. 18 (19) with a torque of 30 Nm and A. F. 24 with a

®

safety sightglasses C

11

Maintenance – continued –

Tools

■ Spanner A. F. 60, DIN 3113, form B

■ Spanner A. F. 24, DIN 3113, form B

■ Spanner A. F. 18, DIN 3113, form B

■ Torque spanner 25 – 130 Nm, ISO 6789

Torques in Nm

VK 14

metInoitangiseD52–51ND05–04ND

E

tunnoinU031

H

VK 16

metInoitangiseD52–51ND05–04ND

H

All torques are based at 20°C room temperature.

A. F.

VK 14

metInoitangiseD52–51ND05–04ND

E

tunnoinU06.F.A

H

VK 16

metInoitangiseD52–51ND05–04ND

H

swercspacdaeh-nogaxeH 06

swercspacdaeh-nogaxeH0306

swercspacdaeh-nogaxeH 42.F.A

swercspacdaeh-nogaxeH81.F.A42.F.A

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Spare Parts

Spare parts list

VK 14

metInoitangiseD

C, B, F

C, B

1

) Kit consisting of: 2 Sightglasses 45 x 10

4 Sightglass gaskets 35 x 46 x 1
2 Mica disks

2

) Kit consisting of: 2 Sightglasses 80 x 15

4 Sightglass gaskets 66 x 82 x 1

VK 16

metInoitangiseD

C, B, F

1

) Kit consisting of: 2 Sightglasses 45 x 10

2

) Kit consisting of: 2 Sightglasses 80 x 20

4 Sightglass gaskets 35 x 46 x 1
2 Mica disks

4 Sightglass gaskets 66 x 82 x 1
2 Mica disks

edockcotS
52–51ND

steksag.lcnissalgthgiS

1

sksidacimdna

)

2

steksag.lcnissalgthgiS

) 884307

984307

edockcotS
52–51ND

steksag.lcnissalgthgiS

sksidacimdna

1

984307

)094307

edockcotS

05,04ND

edockcotS

05,04ND

2

)

Decommissioning

Danger

Risk of severe burns and scalds to the whole body!
Before loosening flanged connections or sealing plugs, make sure that all connected

lines are depressurised (0 bar) and cooled down to room temperature (20°C).

Disposal

Dismantel the equipment and separate the waste materials.
For the disposal of the equipment observe the pertinent legal regulations concerning waste disposal.

13

Annex

Declaration of Conformity

We hereby declare that the equipment VK 14 and VK 16 conform to the following European Directive:

■ EC Pressure Equipment Directive (PED) No. 97/23 of 29 May 1997 (apart from equipment

according to section 3.3)
Applied conformity assessment procedure: Annex III, Module H, verified by the Notified Body 0525.
This declaration is no longer valid if modifications are made to the equipment without consultation

with us.

Bremen, 2nd February 2004

GESTRA AG

Head of the Design Dept.

Uwe Bledschun

Academically qualified engineer

Quality Assurance Representative

Lars Bohl

Academically qualified engineer

14

For your notes

15

Agencies all over the world:

www.gestra.de

GESTRA

España

GESTRA ESPAÑOLA S.A.

Luis Cabrera, 86-88
E-28002 Madrid
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

Great Britain

Flowserve Flow Control (UK) Ltd.

Burrel Road, Haywards Heath
West Sussex RH 16 1TL
Tel. [phone] / 31 44 00
Fax [phone] / 31 45 57
E-mail: [e-mail]

Italia

Flowserve S.p.A.

Flow Control Division
Via Prealpi, 30
l-20032 Cormano (MI)
Tel. [phone]
Fax 00 3902 / 66 32 55 60
E-mail: [e-mail]

Polska

GESTRA POLONIA Spolka z.o.o.

Ul. Schuberta 104
PL - 80-172 Gdansk
Tel. [phone] od 10
Fax [phone]
E-mail: [e-mail]

Portugal

Flowserve Portuguesa, Lda.

Av. Dr. Antunes Guimarães, 1159
Porto 4100-082
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

USA

Flowserve DALCO Steam Products

2601 Grassland Drive
Louisville, KY 40299
Tel.: 00 15 02 / 4 95 01 54, 4 95 17 88
Fax: 00 15 02 / 4 95 16 08
E-Mail: [e-mail]

GESTRA AG

P. O. Box 10 54 60, D-28054 Bremen
Münchener Str. 77, D-28215 Bremen
Tel. [phone] - 0
Fax [phone]
E-Mail [e-mail]
Internet www.gestra.de

818577-00/705c · © 2004 GESTRA AG · Bremen · Printed in Germany

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