UNA 23 UNA 25 UNA 26 - ARSAN UNA 23-25-26 EN...Use steam trap type UNA 23 / UNA 25 / UNA 26 only for...

1

UNA 23

UNA 25

UNA 26

�

GESTRA Steam Systems

GESTRA

Installation Instructions 810516-05Steam Traps

UNA 23, UNA 25, UNA 26

2

Contents

Usage for the intended purpose .............................................................................................................. 7

Safety note ............................................................................................................................................. 7

Danger ................................................................................................................................................... 7

Ratings pursuant to article 9 of the PED ................................................................................................. 7

Important Notes

Page

Explanatory Notes

Scope of supply ...................................................................................................................................... 8

Description ............................................................................................................................................. 8

Function ................................................................................................................................................. 8

Technical data ................................................................................................................................. 9, 10

Corrosion resistance ............................................................................................................................ 10

Sizing ................................................................................................................................................... 10

Name plate / marking ........................................................................................................................... 10

UNA 23, 25, 26 .................................................................................................................................... 11

Heat treatment of welds ....................................................................................................................... 12

Hand vent valve .................................................................................................................................... 12

Installation

Maintenance

Check steam trap ................................................................................................................................. 13

Clean / exchange control unit ................................................................................................................ 13

Clean / exchange sightglass cover ........................................................................................................ 14

Torques ................................................................................................................................................ 15

Spare Parts

Spare parts list ............................................................................................................................... 16, 17

Hand vent valve .................................................................................................................................... 12

Float lifting lever .................................................................................................................................. 12

Operation

Commissioning

UNA 23, 25, 26 .................................................................................................................................... 12

Annex

Declaration of conformity ..................................................................................................................... 18

3

∆PMX

QC

[kg/h

] » Q

H [

kg/h

] x F

1 1.1 1.18 1.2 1.3 1.4 1.48 1.53

AO 13AO 4

[kg/h]

7000

6000

5000

4000

3000

2000

1000

800

600

500

400

300

200

100

Factor F

[lb/h]

20 000

15 000

10 000

8000

6000

5000

4000

3000

2000

1000

800

600

500

400

300

200

1 2 3 4 6 8 10 20 30 40 60 80100 200 300 465 psi

Orifice 32

Orifice 13

Orifice 4

Capacity Chart

Fig. 1

Orifice 2, DN 40 + 50 mm (1½ + 2")

Orifice 4, DN 40 + 50 mm (1½ + 2")

Orifice 8, DN 40 + 50 mm (1½ + 2")

Orifice 13, DN 40 + 50 mm (1½ + 2")

Orifice 22, DN 40 + 50 mm (1½ + 2")

Orifice 2, DN 15 – 25 mm (½ – 1")

Orifice 32, DN 40 + 50 mm (1½ + 2")

Orifice 4, DN 15 – 25 mm (½ – 1")

Orifice 8, DN 15 – 25 mm (½ – 1")

Orifice 13, DN 15 – 25 mm (½ – 1")

Orifice 22, DN 15 – 25 mm (½ – 1")

Orifice 32, DN 15 – 25 mm (½ – 1")

123455

67890!

12

7

0.1 0.2 0.3 0.4 0.6 0.8 1 2 3 4 6 8 10 20 32 bar

34 5

6

80

!

9

4

Dimensions

Fig. 2

AC

D

EF

HF

F I

H

F

J

K

O

NML

B

G

5

Parts Drawings

Fig. 4

Fig. 3

PBO

Q

V

T

T S

R

U

6

Key

A Hexagon-socket screw

B Name plate

C Control unit Simplex

D Body gasket (graphite/CrNi)

E Hand vent valve

F Gasket 17 x 23

G Control unit Duplex

H Plug 3/8" BSP

I Float lifting lever with handle

J Cover

K Hexagon-socket screw

L Orifice

M Seat gasket (graphite/CrNi)

N Deflector

O Body

P Hexagon nut

Q Fixing stud

R Hexagon-socket screw

S Flange for sightglass cover

T Gasket (graphite/CrNi)

U Water-level gauge glass

V Sightglass cover

7

Category

Nominal size DN 15 – 25 40 – 50 40 – 50 40 – 50

CE marking no no yes no

Type all UNA 23 UNA 25/26

Important Notes

Usage for the intended purpose

Use steam trap type UNA 23 / UNA 25 / UNA 26 only for the discharge of condensate within the

admissible pressure/temperature ratings.

Contact the factory for specific recommendations concerning the chemical resistance and suitability of

the valve material for the application in question.

Danger

The steam trap is under pressure when the system is operating.

When loosening flanged connections or plugs hot water or steam might escape.

This presents the danger of severe scalding. Before carrying out any installation or

maintenance work it is therefore essential to isolate and depressurize the trap.

The trap is hot during operation. This presents the danger of severe burns. Before carrying

out any installation or maintenance work make sure that the trap is cold.

Sharp-edged internals might cut your hands. Wear protective gloves when replacing

internals.

Safety note

The equipment may only be installed by qualified staff.

Qualified staff are those persons who – through adequate training in engineering, the use and

application of equipment in accordance with regulations concerning steam systems, and first aid &

accident prevention – have achieved a recognised level of competence appropriate to the installation

and commissioning of this device.

Ratings pursuant to article 9 of the PED1)

Fluid gas liquid

Fluid group 1 2 1 2

Use no yes no yes

Exception pursuant

to article 3.3

UNA 26 HFlange Class 150

Exception pursuant

to article 3.3

Exception pursuant

to article 3.3

1) PED = Pressure Equipment Directive

I

8

Explanatory Notes

Scope of supply

UNA 23

1 Steam trap UNA 23

1 Installation manual

UNA 25

1 Steam trap UNA 25


UNA 26

1 Steam trap UNA 26


Description

UNA 23, UNA 25 and UNA 26 are ball float traps with rolling ball closing mechanisms.

The steam traps work independently of back pressure, thus ensuring universal application.

UNA 23/UNA 25/UNA 26 features a body with bolted cover and a control unit. Two different control

units are available: Level-dependent SIMPLEX control for cold condensate and temperature-

dependent DUPLEX control with automatic deaeration for saturated steam systems.

Optional item: sightglass cover with integral water-level gauge glass (UNA 23, PN 16).

■ suitable for large condensate flowrates

■ asbestos-free body gasket (graphite /CrNi)

■ horizontal or vertical installation (dependent on body design)

Function

The ball valve of the control unit is operated by the float as a function of the condensate level in the

trap. The cross-sectional area (CSA) of the orifice dictates the max. flowrate when the valve is

completely open. The max. admissible differential pressure of the control unit is a function of the CSA

of the orifice and the density of the fluid to be discharged. There are six different closing units (orifices)

available which can also be exchanged subsequently. Float traps equipped with control units DUPLEX

enable automatic temperature-dependent deaeration of saturated steam systems during start-up and

in continuous operation.

UNA 2 . . . with Simplex control

1 Hand vent valve with gasket

Design with float lifting lever

Float lifting lever installed

1 Lever extension

9

Technical Data

Pressure/Temperature Ratings*) UNA 23 H / V, PN 16

Body material Gey cast iron EN-JL 1040 (GG-25)

Nominal sizes (DN) 15, 20, 25, 40, 50 mm

End connections Flanged to EN 1092-2, form B

Max. service pressure PMA [barg] 16 (230 psig) 11.2 (163 psig) 9.6 (140 psig)

Related temperature TMA [°C] 120 (248 °F) 250 (482 °F) 300 (572 °F)

*) When used for the intended purpose.

Explanatory Notes – continued –

Orifices (O) UNA 23 UNA 25, UNA 26

O 2 2 bar ( 30 psi) X X

O 4 4 bar ( 60 psi) X X

O 8 8 bar (115 psi) X X

O 13 13 bar (185 psi) X X

O 22 22 bar (320 psi) X

O 32 32 bar (465 psi) X

Max. admissible dif-

ferential pressure 1) 2)

∆∆∆∆∆PMX [bar]

1) Observe pressure/temp. specifications.2) Inlet pressure minus outlet pressure.

Pressure/Temperature Ratings*) UNA 25 H / V, PN 40

Body material S.G. (ductile) iron EN-JS 1025 (GGG-40.3)


End connections Flanged to DIN PN 40

Max. service pressure PMA [barg] 38 (550 psig) 32 (465 psig) 25 (360 psig)


Pressure/Temperature Ratings*) UNA 26 H, PN 40

Body material Cast steel 1.0460 (C 22.8) / ASTM A 105

Nominal sizes (DN) 15, 20, 25 mm

End connections Flanged to DIN PN 40, ASME Class 300

Screwed BSP or NPT

Butt-weld, socket weld



Pressure/Temperature Ratings*) UNA 26 H, PN 40

Body material Cast steel 1.0619 (GS-C 25)

Nominal sizes (DN) 40, 50 mm

End connections Flanged to DIN PN 40, ASME Class 300

Screwed BSP or NPT

Butt-weld, socket weld



10

Explanatory Notes – continued –

Technical Data – continued –

When used for its intended purpose the safe functioning of the steam trap will not be impaired by

corrosion.

Corrosion Resistance

The trap body must not be subjected to sharp increases in pressure. Welds and flanges of the trap are

designed to withstand dynamic loading (bending and alternative stress).

The dimensional allowances for corrosion reflect the latest state of technology.

Sizing

Design specifications and ratings according to EN 19 and EN ISO 26652 are indicated on the name plate

and trap body / cover.

■ Design UNA 2 . . . h: for horizontal lines

UNA 2 . . . v: for vertical lines

■ SIMPLEX / DUPLEX: Type of control unit (cf. Description)

additional “P”: with Perbunan ball (max. 40 °C)

additional “R”: with inner vent tube

■ Orifice: Type of orifice

■ Stamp on name plate, e. g. specifies the manufacturing year and the quarter,

in this case the 4th quarter in 2000.

Pressure/Temperature Ratings*) UNA 26 H , Flanged to Class 150

Body material Cast steel 1.0460 (C 22.8) / ASTM A 105 DN 15, 20, 25

1.0619 (GS-C 25) DN 40, 50


End connections Flanged to ASME Class 150

Max. service pressure PMA [barg] 16.9 (247 psig) 12.1 (174 psig) 6.5 (94.3 psig)


Pressure/Temperature Ratings*) UNA 26 V, PN 40

Body material Cast steel 1.0619 (GS-C 25)


End connections Flanged to DIN PN 40



*) When used for the intended purpose.

4

00

Name Plate / Marking

11

1. Take care of correct position of installation. Name plate B must always be on top.

2. Take care of flow direction. The flow arrow is on the trap body.

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

4. Clean socket-weld ends.

5. Arc-weld trap only manually (welding process 111 and 141 in accordance with DIN EN 24063).

Socket-Weld Traps




4. Clean seating surfaces of both flanges.

5. Install steam trap.

Flanged Traps




4. Clean threads of screwed sockets.

5. Install steam trap.

Screwed-Socket Traps

1 Take care of correct position of installation. Name plate B must always be on top.



4. Clean butt-weld ends.

5. Arc-weld trap only manually (welding process 111 and 141 in accordance with DIN EN 24063) or

use gas-welding process (welding process 3 in accordance with DIN EN 24063).

Butt-Weld Traps

Installation

The float traps can – depending on their body design – be installed in horizontal or vertical pipelines with

downward flow.

UNA 23, UNA 25, UNA 26

12

Installation – continued –

Attention

■ Only qualified welders certified e. g. according to DIN EN 287 may weld the steam trap

into pressurized lines.

A subsequent heat treatment of the welds is not required.

Heat treatment of welds

1. Remove plug H.

2. Insert gasket F, fit hand vent valve E in place and tighten with a torque of 75 Nm.

3. Close the hand vent valve.

Hand vent valve

■ Spanner A.F. 17 mm to DIN 3113, form B

■ Torque spanner 20 – 120 Nm, to DIN ISO 6789

Tools

Commissioning

Before commissioning make sure that the hand vent valve and the float-lifting lever are firmly attached

to the trap and do not leak.

Operation

1. Take heed of the note “Danger” on page 7.

2. Open the hand vent valve if necessary.

3. Close hand vent valve firmly after the venting process.

Hand vent valve


2. Attach handle to float-lifting lever I, Fig. 2.

3. Turn float-lifting lever I according to the direction arrow on the cover J.

4. Turn float-lifting lever I in the opposite direction of the arrow to close the valve and remove the

handle.

Float lifting lever

13

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


2. Undo the body screws A or hexagon nuts P. Remove cover J from body O.

3. Unscrew hexagon-socket screws K, remove control unit C or G and orifice L.

4. Replace control unit C or G and orifice L in case of visible signs of wear or damage.

5. Clean body, internals and all gasket surfaces.

6. Apply heat-resistant lubricant to all threads and the seating surfaces of the closing unit and cover

(use for instance WINIX® 2150).

7. Insert orifice L, attach control unit C or G and tighten screws K alternately with a torque of

10 Nm (DN 40 and 50 mm) or 5 Nm (DN 15 – 25 mm).

8. Insert a new body gasket D.

9. Put cover onto the body. Tighten body screws A or hexagon nuts P alternately in several steps to

the torque indicated in the table on page 15.

Clean/exchange control unit

Maintenance

GESTRA steam traps type UNA 2... do not require any special maintenance.

However, if used in new installations which have not been rinsed it may be necessary to check and

clean the trap.

You can check the trap UNA 2... for steam loss during operation using the ultrasonic measuring unit

VAPOPHONE® or the test unit TRAPtest ®.

In case of steam loss clean the trap and/or replace the control unit or orifice (closing unit).

Check steam trap

Tools

■ Spanner A. F. 17, 19, 22 and 24 mm to DIN 3113, form B.

■ Allen key A. F. 5, 6, 10 mm to ISO 2936

■ Torque spanner 10 – 60 Nm, 60 – 120 Nm; DIN ISO 6789

14

Maintenance – continued –

1. Take heed of note “Danger” on page 7.

2. Undo hexagon-socket screws R. Remove flange S from body V.

3. Remove and clean water-level gauge glass U.

4. Replace water-level gauge glass U and gaskets T in case of visible signs of wear or damage.

5. Clean all gasket surfaces.

6. Apply heat-resistant lubricant to all threads and seating surfaces of the flange

(use for instance WINIX® 2150).

7. Insert gasket T and water-level gauge glass U. Install flange S and tighten the screws Ralternately with a torque of 15 Nm.

Clean/exchange sightglass cover

Attention

Do not change the factory setting of the bellows (thermostatic element).

In case of inadvertent misadjustment restore the factory setting. When the float ball is

pushed right down the dimension 1 (length of bellows) should be as follows:

■ DN 15 – 25 mm (½ – 1") control unit up to 13 bar 1 = 34.5 mm

■ DN 15 – 25 mm (½ – 1") control unit up to 32 bar 1 = 32 mm

■ DN 40 + 50 mm (1½ + 2"), 1 = 51.5 mm

1


15

Torques

Item Steam trap Torque [Nm]

E H I UNA 23, UNA 25, UNA 26, DN 15 – 50 (½ – 2") 75

R UNA 23 with sightglass cover, DN 15 – 50 (½ – 2") 15

K UNA 23, UNA 25, UNA 26, DN 15 – 25 (½ – 1") 5

K UNA 23, UNA 25, UNA 26, DN 25 + 40 (1 + 1½") 10

A UNA 23 h, DN 15 – 25 (½ – 1") 40

P UNA 23, DN 40 + 50 (1½ + 2") 75

P UNA 25, UNA 26, DN 15 – 25 (½ – 1") 60

P UNA 25, UNA 26, DN 40 + 50 (1½ + 2") 115

All torques indicated in the table are based at a room temperature of 20 °C.

Apply heat-resistant lubricant, e. g. WINIX® 2150, to threads.


16

Designation

Ref. no. Ref. no.

DN 15 – 25 DN 40 + 50

(½ – 1") (1½+2")

Body gasket*) (graphite/CrNi) 560 491 560 492

Gasket*) C 17 x 23 mm 560 486 560 486

Sightglass gasket**) (graphite/CrNi) 560 487 560 488

Reflection sightglass

with gasket560 481 560 480

Seat gasket*) (graphite/CrNi) 560 489 560 490

Control unit Duplex, complete Orifice 32 560 078 560 093

Orifice 22 560 077 560 092

Orifice 13 560 076 560 091

Orifice 8 560 075 560 090

Orifice 4 560 074 560 089

Orifice 2 560 073 560 088

Control unit Simplex, complete Orifice 32 560 072 560 087

Orifice 22 560 071 560 086

Orifice 13 560 070 560 085

Orifice 8 560 069 560 084

Orifice 4 560 068 560 083

Orifice 2 560 067 560 082

Spare part list

Spare Parts

Item

*) Minimum order quantity 20 items.

**) Minimum order quantity 10 items. Contact your local dealer for smaller quantities.

D

F

T

U T

M

G L MK D

C L MK D

17

Designation

Ref. no. Ref. no.

DN 15 – 25 DN 40 + 50

(½ – 1") (1½+2")

Control unit Simplex, complete560 079 560 094

without orifice

Control unit Duplex up to 13 bar, complete560 080 560 095

without orifice

Control unit Duplex above 13 bar, complete560 081 560 096

without orifice

Orifice, complete Orifice 32 560 045 560 051

without control unit

Orifice 22 560 044 560 050

Orifice 13 560 043 560 049

Orifice 8 560 042 560 048

Orifice 4 560 041 560 047

Orifice 2 560 040 560 046

Hand vent valve

with gasket 560 058

Spare part list

Spare Parts – continued –

Item

*) Minimum order quantity 20 items. Contact your local dealer for smaller quantities.

C M KD

G M KD

G M KD

L M K

E F

18

Annex

We hereby declare that the pressure equipment UNA 25 and UNA 26, nominal sizes DN 40 – 50 mm,

conform to the following European Directive:

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

These steam traps are pressure equipment as defined in article 1, section 2.1.4 of the PED.

Applied conformity assessment procedure acc. to Annex III: module A.

This declaration is no longer valid if modifications are made to the equipment without prior

consultation with us.

Declaration of Conformity

Bremen, 27th November 2000

GESTRA AG

Quality Assurance Representative

Walter Meyer

Head of Design Dept.

Uwe Bledschun

(Academically qualified engineer)

19

For your notes

20

Great Britain

Flowserve Flow Control (UK) Ltd.

Burrel Road, Haywards Heath

West Sussex RH 16 1TL

Tel. 00 44 14 44 / 31 44 00

Fax 00 44 14 44 / 31 45 57

E-mail: [email protected]

Italia

Flowserve S.p.A.

Flow Control Division

Via Prealpi, 30

l-20032 Cormano (MI)

Tel. 00 39 02 / 66 32 51

Fax 00 39 02 / 66 32 55 60


GESTRA ESPAÑOLA S.A.

Luis Cabrera, 86-88

E-28002 Madrid

Tel. 00 34 91 / 51 52 032

Fax 00 34 91 / 41 36 747; 51 52 036


España

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: [email protected]

USA

Portugal

Flowserve Portuguesa, Lda.

Av. Dr. Antunes Guimarães, 1159

Porto 4100-082

Tel. 0 03 51 22 / 6 19 87 70

Fax 0 03 51 22 / 6 10 75 75


Polska

GESTRA POLONIA Spolka z.o.o.

Ul. Schuberta 104

PL - 80-172 Gdansk

Tel. 00 48 58 /306 10 -02 od 10

Fax 00 48 58 /306 33 00


Agencies all over the world

www.gestra.de

GESTRA AG

P. O. Box 10 54 60, D-28054 Bremen

Münchener Str. 77, D-28215 Bremen

Telephone +49 (0) 421 35 03 - 0

Fax +49 (0) 421 35 03 - 393

E-Mail [email protected]

Internet www.gestra.de

810516-05/604cm · © 1998 GESTRA AG · Bremen · Printed in Germany

GESTRA

UNA 23 UNA 25 UNA 26 - ARSAN UNA 23-25-26 EN...Use steam trap type UNA 23 / UNA 25 / UNA 26 only for...

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Transcript of UNA 23 UNA 25 UNA 26 - ARSAN UNA 23-25-26 EN...Use steam trap type UNA 23 / UNA 25 / UNA 26 only for...