GESTRA UNA 13P User manual

1
UNA 13 P
Installation Instructions 810518-00
Air Trap for Compressed Air and Gas

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Capacity Chart
Fig. 1
Max. discharge capacity of cold condensate
from compressed-air and gas lines.
1
1
Differential pressure (assuming discharge to atmospheric pressure)
Capacity of cold condensate
1000
800
600
500
400
300
200
100
80
60
50
40
30
2000
1000
800
600
500
400
300
200
100
80
60
0.1 0.2 0.4 0.6 1 2 3 4 5 6 8 10 16
0.3 0.5 0.8
1 2 3 4 6 8 10 20 30 40 60 80 100 200
lb/h kg/h
psi
bar

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TOP
Parts Drawings
Fig. 2
D EC
F
G
H
I
J
A
B

4
Maintenance
Fig. 4
Fig. 3
AI
I

5
Flow direction arrow
Body
Cover
Name plate
3/8" BSP connection for fitting an air-balance pipe
Gasket 17 x 23
Float lifting lever
Handle
Control unit
Body gasket 77 x 67 x 1
Key
B
C
D
F
G
H
I
J
A
E

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Contents
Safety note......................................................................................................................7
Danger ............................................................................................................................7
Important Notes Page
Explanatory Notes
Scope of supply ..............................................................................................................8
Description ......................................................................................................................8
Function ..........................................................................................................................8
Technical data .................................................................................................................9
UNA13 Ph, UNA13 Pv .................................................................................................10
Air-balance pipe ............................................................................................................11
Installation
Maintenance
Clean air trap ................................................................................................................11
Spare Parts
Spare parts list..............................................................................................................12

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Important Notes
Safety Note
Use air trap UNA 13P only to drain condensate from compressed-air and other gas
lines.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 istallation and commissioning of this device.
Danger
The air trap is under pressure when the system is operating.
When loosening flanged connections or plugs fluid might escape.
Danger of serious injuries caused by gasket and trap parts that get
loose abruptly.
Before carrying out any installation or maintenance work isolate and
depressurize the trap.
The trap may be used in toxic fluids. This presents the danger of severe
poisoning and acid burns.Wear protective clothing when carrying out any
installation or maintenance work.
Sharp-edged internals might cut your hands. Wear protective gloves when
replacing the control unit.

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Explanatory Notes
Scope of Supply
UNA13 P
1 Air trap type UNA13P
1 Installation manual
Description
Air traps with ball float and rolling valve ball for compressed air and gases.
The trap is used to drain condensate from compressed-air and gas lines. Body with
bolted cover. After removal of the cover the control unit is easily accessible, and can
be exchanged without removing the trap from the line.The trap features as standard
a manual purging device and a 3/8" BSP connection for fitting an air-balance pipe.
■“h” design for horizontal pipework
■“v” design for vertical pipework
Function
The UNA 13 P is a float-operated air trap.The rolling ball valve closing mechanism
incorporated in the control unit is directly operated by the float releasing the cross-
sectional area of the orifice as a function of the condensate level in the trap. The trap
opens and closes independently of the temperature and pressure prevailing in the
body.
Closing mechanism (orifice) for temperatures up to 40°C rolling ball valve made of
Perbunan N®, up to 120°C made of steel.
■“Simplex” design: Closing mechanism with rolling ball valve of steel
■“Simplex P” design: Closing mechanism with rolling ball valve of Perbunan N®.
UNA 13 P is equipped with a manual purging device and a 3/8" connection for fitting an
air-balance pipe.The max. admissible differential pressure is dependent on the cross-
sectional flow area of the orifice and the density of the fluid to be discharged.
The air trap UNA 13 P features as standard an orifice for a maximum differential
pressure of 16 barg at a density of the liquid of ρ= 1000 kg/m³. At a lower density the
maximum differential pressure range is reduced.The capacity of the air trap is
indicated in the chart on page 2. For air traps for other pressure ranges, please
consult us.
Perbunan N®is a registered trademark of BAYER AG, Leverkusen.

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1) Physical and chemical properties comply with DIN grade. ASTM nearest equivalent grade is
statedforguidance only.
Technical Data
Pressure/Temperature Rating
UNA13 P
PMA(Max. allowablepressure) [barg] 116
[psig] 230
TMA(Max.temperature)
with steel valve ball [°C] 120
withPerbunan valveball [°C] 140
∆PMX (Max. differential pressure)
with steel valve ball [barg] 116
[psig] 230
withPerbunan valveball [barg] 116
[psig] 230
(inletpressure minus
outletpressure)
Materials DIN
Bodyand
cover
newdesignation olddesignation
Ballfloat
Seat
Valveball
Body
gasket
Other
internals
EN-GJL-250
(EN-JL-1040) Cast iron GG 25 (0.6025)
Austeniticstainlesssteel
X 6 CrNiMoTi 17122
(1.4571)
Stainlesssteel
X 8 CrNiS189 (1.4305)
Stainlesssteel
X 5 CrNi1810 (1.4301)
Graphite/CrNi
Stainlesssteel
ASTM1)
equivalent
A 126 CL.B
AISI 316 Ti
AISI303
A 182 F 304

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1. Remove cover from body , Fig. 2.
2. Lever control unit off its support using a screwdriver, Fig. 3.
3. Turn body, so that arrow points in the desired flow direction.
4. Position control unit on support and fix by two blows using a hammer and
a punch, Fig. 4.
5. Clean seating surfaces of body and cover.
6. Insert new gasket and reassemble body and cover. Tighten body screws in
diagonally opposite pairs with a torque of 35 Nm. After commissioning retighten
body screws.
Change Flow Direction
1. Take care of correct position of installation. Name plate must always be on top.
2. Take care of flow direction.The flow arrow is on the trap body. If necessary,
change direction of flow.
3. Consider space required for opening tap.When the trap is installed a space of
130 mm is required for removing cover .
4. Remove plastic plugs.They are only used as transit protection.
5. Clean seating surfaces of both flanges.
6. Install air trap.
Flanged Trap
A
C
D
1. Take care of correct position of installation. Name plate must always be on top.
2. Take care of flow direction.The flow arrow is on the trap body. If necessary,
change direction of flow.
3. Consider space required for opening trap.When the trap is installed a space of
130 mm is required for removing cover .
4. Remove plastic plugs.They are only used as transit protection.
5. Clean threads of screwed sockets.
6. Install air trap.
Screwed-Socket Trap
D
A
C
C B
I
A
I
■Allen key size 8, DIN 911L
■Torque spanner 20 – 120 Nm, DIN ISO 6789
■Screwdriver 5.5/125 mm, DIN 5265
■Punch 120/10 mm, DIN 7250
■Hammer 500 g, DIN 1041
Tools
Installation
The air trap can – depending on its body design – be installed in horizontal or vertical
pipelines with downward flow.
UNA 13 P

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Installation – continued –
For GESTRA air trap UNA 13 P we recommend the installation of an air-balance
pipe to ensure the continuous condensate flow from the fluid line to the trap.
The air-balance pipe also prevents the formation of water pockets.
Air-Balance Pipe
K
K
The GESTRA air trap UNA 13 P does not require any particular maintenance.
It is, however, recommended to check and clean the trap at regular intervals if the
condensate is very oily.
Maintenance
1. Remove cover from body , Fig. 2.
2. Lever control unit off its support using a screwdriver, Fig. 3.
3. Remove old gasket .
4. Clean body and internals.
5. Clean seating surfaces of body and cover, insert new gasket .
6. Position control unit on support, and fix by two blows using a hammer and
punch, Fig. 4.
7. Insert new gasket and reassemble body and cover. Tigthen body screws in
diagonally opposite pairs with a torque of 35 Nm. After commissioning retighten
body screws.
Clean Air Trap
C B
I
J
J
I
■Allen key size 8, DIN 911L
■Torque spanner 20 – 120 Nm, DIN ISO 6789
■Screwdriver 5.5/125 mm, DIN 5265
■Punch 120/10 mm, DIN 7250
■Hammer 500 g, DIN 1041
Tools

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Spare Parts
Spare Part List
Item Designation
ControlunitSimplex
Body gasket
Orifice
Controlunit Simplex P
Orifice13
Orifice13
Ref.no.
560415
560418
560493
I
I
J

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810518-00/300c
·
©1999 GESTRA GmbH
·
Bremen
·
Printed in Germany