ARI Armaturen Steam injector PN25 User Manual

Operating and installation instructions

Steam injector

(PN25)

PN25

- with internal thread Rp 1/2

and external thread R1 (series 651....2)

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 position..................................................5

6.0 Putting the valve into operation.................... 5

PN25

- with internal thread Rp1 - 1 1/2 (series 651....2)

- with butt weld ends DN25 / 40 (series 651....4)

7.0 Care and maintenance................................... 6

7.1 Cleaning ................................................................. 6

7.2 Tightening torques.................................................. 6

8.0 Troubleshooting ............................................. 6

9.0 Troubleshooting table ................................... 6

10.0 Dismantling the valve or the body ............. 7

11.0 Warranty / Guarantee ................................... 7

12.0 EC declaration of conformity...................... 8

Rev. 0040807017 1010 englisch

Operating and installation instructions

Steam injector

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.

Page 2 Rev. 0040807017 1010

Operating and installation instructions

Steam injector

4.0 Description

4.1 Scope of applications

Steam injectors are used for direct heating of water by means of steam. In open water tanks
the final temperature should not exceed 90°C.

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.

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)

Steam injectors are end pieces on steam-bearing pipes, which are directly immersed in the
water tank to be heated. The injectors are to accomplish the phase transition from gaseous
steam into liquid condensate, emitting the heat of vaporization. A low-noise operation has
to be achieve. The injector has to carry out a continuously mixing and heat distribution on
the water to be heated.

Steam injectors have to be installed as deep as possible below the water surface. However,
a sufficient minimum distance from the container walls should be introduced to allow a free
and continuously mixing of the water.

The services specified in the data sheet are related to a with saturated steam (vapour)
heated open water tank. With increased power requirements, several steam injectors
should be installed parallel.

Fig. 1

Rev. 0040807017 1010 Page 3