GESTRA UNA 13P Manuel utilisateur

UNA 13 P

Installation Instructions 810518-00

Air Trap for Compressed Air and Gas

Capacity Chart

Fig. 1

Max. discharge capacity of cold condensate

from compressed-air and gas lines.

Differential pressure (assuming discharge to atmospheric pressure)

Capacity of cold condensate

1000

800

600

500

400

300

200

100

2000

1000

800

600

500

400

300

200

100

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

TOP

Parts Drawings

Fig. 2

D EC

Maintenance

Fig. 4

Fig. 3

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

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

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.

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.

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

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

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

C B

■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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