ARI Armaturen sight glasses PN40 User Manual

Operating and installation instructions

Double window sight glasses

(PN16 / 40)

PN16 / PN40

- with flanges (BR 660/661....1)

- with screwed sockets (BR 660/661....2)

- with butt weld ends (BR 660/661....4)

Contents

1.0 General information on operating

instructions.................................................... 2

2.0 Notes on possible dangers............................ 2

2.1 Significance of symbols ..........................................2

2.2 Explanatory notes on safety information .................2

3.0 Storage and transport ................................... 2

4.0 Description...................................................... 3

4.1 Scope of applications ..............................................3

4.2 Operating principles ................................................3

4.3 Diagram...................................................................4

4.4 Technical data - remarks .........................................4

4.5 Marking ...................................................................4

5.0 Installation....................................................... 5

5.1 General notes on installation...................................5

5.2 Installation instructions for welding .........................6

5.3 Installation position..................................................6

6.0 Putting the valve into operation.................... 6

7.0 Care and maintenance................................... 7

7.1 Tightening torques.................................................. 7

8.0 Troubleshooting ............................................. 7

9.0 Troubleshooting table ................................... 7

10.0 Dismantling the valve or the body ............. 8

11.0 Warranty / Guarantee ................................... 8

12.0 EC declaration of conformity ..................... 9

Rev. 0040807003 1404 englisch

Operating and installation instructions

Double window sight glasses

1.0 General information on operating instructions

These operating instructions provide information on mounting and maintaining the fittings.
Please contact the supplier or the manufacturer in case of problems which cannot be
solved by reference to the operating instructions.

They are binding on the transport, storage, installation, start-up, operation, maintenance
and repair.
The notes and warnings must be observed and adhered to.

- Handling and all work must be carried out by expert personnel or all activities must be
supervised and checked.

It is the owner’s responsibility to define areas of responsibility and competence and to
monitor the personnel.

- In addition, current regional safety requirements must be applied and observed when
taking the fittings out of service as well as when maintaining and repairing them.

The manufacturer reserves the right to introduce technical modifications at any time.
These Operating Instructions comply with the requirements of EU Directives.

2.0 Notes on possible dangers

2.1 Significance of symbols

ATTENTION !

. . .

Warning of general danger.

2.2 Explanatory notes on safety information

In these Operating and Installation Instructions dangers, risks and items of safety
information are highlighted to attract special attention.

Information marked with the above symbol and “ATTENTION!” describe practices, a failure
to comply with which can result in serious injury or danger of death for users or third parties
or in material damage to the system or the environment. It is vital to comply with these
practices and to monitor compliance.

All other information not specifically emphasised such as transport, installation, operating
and maintenance instructions as well as technical data (in the operating instructions,
product documentation and on the device itself) must also be complied with to the fullest
extent in order to avoid faults which in turn can cause serious injury to persons or damage
to property.

3.0 Storage and transport

ATTENTION !

- Protect against external force (like impact, vibration, etc.).

- Valves must not be used to take external forces, e.g. they are not designed for
use as climbing aids, or as connecting points for lifting gear.

- Suitable materials handling and lifting equipment should be used.
See catalog sheet for weights.

- At -20°C to +65°C.

- The paint is a base coat to protect against corrosion during transportation and storage.
Do not damage paint protection.

Page 2 Rev. 0040807003 1404

Operating and installation instructions

Double window sight glasses

4.0 Description

4.1 Scope of applications

Double window sight glasses are used for the checking of media flow in pipelines and the
monitoring of apparatus and system function.

ATTENTION !

- Refer to the data sheet for applications, limits on use and possibilities.

- Certain media require or preclude the use of special materials.

- The valves are designed for standard operating conditions. If conditions exceed
these requirements, e.g. aggressive or abrasive media, the operator should
state the higher requirements when ordering.

- Valves made from grey cast iron are not authorised for use in systems subject
to TRD 110.

The information complies to the Pressure Equipment Directive 97/23/EC.
It is the responsibility of the machine planner to ensure compliance.
The special markings on the valve must be taken into account.

Refer to the catalogue sheet to see which materials are used in standard versions.

Please contact the supplier or the manufacturer if you have any questions.

4.2 Operating principles

(refer to Fig. 2 page 4)

The double window sight glass allows visual inspection of flow in pipelines.
It has no moving parts.

The double window sight glass is installed in the pipeline upstream of the steam trap.

Fig. 1

Back pressure of condensate

If the pipeline is flooded due to back pressure,
condensate (will back up) fill the glass with
liquid.

Rev. 0040807003 1404 Page 3

Steam flow

On steam flow, the liquid level is lowered.

Intensive mixture of water and steam can
lead to an intensive bubbling.