AWS 930 Series Manuale utente

Read carefully before use.

Keep for future use.

We reserve the right to make technical changes.

Englisch

AWS Apparatebau Arnold GmbH

Zimmerbachstraße 51

74676 Niedernhall - Waldzimmern

FON +49 (0)7940 9308-200

FAX +49 (0)7940 9308-212

MAIL [email protected]

WEB www.aws-apparatebau.de

Operating instruction

Disco check valve

Product line

930 / 931 / 932 / 932-HD / 936

CONTENTS

DISCO CHECK VALVE

Revision status: 03/05/2022 Index number: D0-116

1PREFACE.......................................................................................................................1

1.1 General....................................................................................................................................... 1

1.2 Target group.............................................................................................................................. 1

1.2.1 Personnel qualification.......................................................................................................... 1

1.3 Applicable documents.............................................................................................................. 1

1.4 Warranty..................................................................................................................................... 1

2SAFETY INSTRUCTIONS ..............................................................................................2

2.1 Warnings.................................................................................................................................... 2

2.2 Intended use.............................................................................................................................. 2

2.3 Requirements for the user....................................................................................................... 2

2.4 General safety instructions...................................................................................................... 3

3VALVE DESCRIPTION...................................................................................................5

3.1 Product lines.............................................................................................................................. 6

3.2 Intended use.............................................................................................................................. 7

3.3 Description of function.............................................................................................................. 7

3.4 Pressure test of the valve........................................................................................................ 8

3.5 Scope of delivery ...................................................................................................................... 8

4TYPE PLATE..................................................................................................................9

4.1 Article description breakdown................................................................................................. 9

4.2 Type code ................................................................................................................................ 10

5STORAGE AND TRANSPORT.....................................................................................11

6INSTALLATION............................................................................................................12

6.1 Prepare installation................................................................................................................. 12

6.2 Installation instruction............................................................................................................. 13

7COMMISSIONING, DECOMMISSIONING, MAINTENANCE ........................................16

7.1 Commissioning........................................................................................................................ 16

7.2 Decommissioning.................................................................................................................... 16

7.3 Maintenance............................................................................................................................ 16

7.4 Remove pollutants.................................................................................................................. 16

7.5 Correct malfunctions and defects......................................................................................... 17

8REMOVAL....................................................................................................................18

8.1 Prepare removal...................................................................................................................... 18

8.2 Removal instructions.............................................................................................................. 18

9STORE / REUSE VALVE..............................................................................................18

10 DISPOSAL....................................................................................................................19

11 DECLARATION OF CONFORMITY..............................................................................19

1 PREFACE

Revision status: 03/05/2022 1 Index number: D0-116

1 PREFACE

This operating instruction supports the user in the appropriate, safe and economical use of

the following valves:

Disco check valves of the product line 930, 931, 932, 932-HD and 936

1.1 General

These operating instructions apply to all the above-mentioned valves. To guarantee safe and

smooth use, the entire manual must be read and understood before installation and

commissioning. These instructions are intended to assist the user during installation,

operation, maintenance and removal. In addition to the instructions in this manual, all

applicable accident prevention regulations, safety rules, country-specific or system-specific

regulations and instructions must be observed. These operating instructions are an essential

part of the valve and must be kept available by the operator at the place of use, also for a

later use.

1.2 Target group

This instruction is intended for any person who is involved in work of any kind on the valve. In

particular, the operating instructions are intended for trained and qualified personnel.

1.2.1 Personnel qualification

All work on the valve must be carried out by qualified personnel only. If the personnel do not

have the required qualifications, they have to be trained. This must be ensured by the

operator. Persons without the required knowledge and skills are not permitted to work on the

valve.

1.3 Applicable documents

This includes the corresponding data sheet and the declaration of conformity of the above

mentioned valves. If necessary, these are to be requested from the manufacturer or

downloaded from the website.

1.4 Warranty

AWS Apparatebau Arnold GmbH does not assume any warranty in case the operator or third

parties:

disregard this document.

do not use the valve properly.

should carry out interventions of any kind (conversions, modifications, etc.) on the

valve.

Malfunctions due to pollution or wear of the valve as well as wearing parts (e.g. seals) are

not covered by the warranty.

2 PREFACE

Revision status: 03/05/2022 2 Index number: D0-116

2 SAFETY INSTRUCTIONS

2.1 Warnings

The following warnings are used in this manual. In order to protect you from accidents,

injuries and damage to property, it is important to read and observe these warnings.

DANGER

High risk

Indicates an immediate danger. If not avoided, death or serious

injury will result.

WARNING

Medium risk

Indicates a potentially dangerous situation. If not avoided,

death or serious injury may result.

CAUTION

Low risk

Indicates a potentially dangerous situation. If it is not avoided,

minor or slight injuries may result.

NOTICE

Commandment

Indicates a potentially harmful situation. If not avoided, property

damage may result.

2.2 Intended use

AWS valves may only be used within the approved pressure and temperature limits,

considering chemical and corrosive influences. The valves are not suitable for fluids

containing solids. Intended use includes observing and following the instructions in this

manual. Modifications, conversions or any use of the valve other than the intended use are

considered to be improper use.

2.3 Requirements for the user

It is the responsibility of the planner/installer and operator to ensure that:

the valve is used as described in chapter 2.2 Intended use.

the piping system is properly installed and its proper functioning is regularly checked.

only qualified personnel are used for installation, removal and maintenance.

the valve is only professionally installed if it is in perfect condition.

the operating instruction are taken into account by the personnel.

personnel receive regular instruction in industrial safety and environmental protection

(especially for pressurized pipes).

2 PREFACE

Revision status: 03/05/2022 3 Index number: D0-116

2.4 General safety instructions

The same regulations apply to all valves as to pipeline systems in which they are installed.

The national and international regulations with regard to accident prevention as well as

safety regulations must be observed by the operator.

DANGER

When working on system

System must be switched off and secured against

unauthorized switch-on.

Pipeline must be pressureless to prevent uncontrolled

leakage of the medium.

Pipeline must have cooled down to approx. 20°C.

Medium must be completely removed from the valve

and pipeline.

Contaminated valve must be completely

decontaminated before work is performed.

Valves may only be installed, removed and maintained

by qualified personnel.

DANGER

When operating the system and the valve

In applications with explosion hazard, hot surfaces of

the system and valve parts can be a potential source of

ignition. This danger must be taken into account by the

operator.

WARNING

When working on the system

Any remaining liquid that may leak out during removal

must be collected and disposed of.

WARNING

When operating the system and the valve

Only media may be used which do not damage the

valve and its seals (suitable material pairing).

Otherwise, this can lead to leakage and leaking of the

medium.

When using media with a very low or very high

temperature, burns can occur when touching the

system parts or the valve housing. In this case, these

may only be touched with suitable protective equipment.

This must be done under the responsibility of the

operator of the system.

Pressure surges in the system can cause severe

damage and must be avoided. This is the responsibility

of the operator of the system.

2 PREFACE

Revision status: 03/05/2022 4 Index number: D0-116

CAUTION

Risk of minor injuries

Wear protective gloves during installation, removaly and

maintenance to avoid injuries from cuts on sharp-edged

components.

Always secure the valve adequately during transport,

installation and removal.

NOTICE

Notice of property damage

The valve and the system can be damaged if the valve

is not installed correctly.

Do not subject the valve to pressure surges; otherwise

the valve may be damaged.

3 VALVE DESCRIPTION

Revision status: 03/05/2022 5 Index number: D0-116

Pos.

Name

Body

Disc

Spring cross

Spring

O-ring1

3 VALVE DESCRIPTION

The illustrations are exemplary for the design of the valves. All further information can be

found in the data sheets of the relevant product line.

The following illustration describes the 932 product line (DN 15-100):

1 Only available in soft-sealing version.

The design of the specified product lines (930/931/932/932-HD/936) differs only slightly from

each other. The illustration lists all the main components of the valves.

Disco check valve 932

DN15 - 100

3 VALVE DESCRIPTION

Revision status: 03/05/2022 6 Index number: D0-116

3.1 Product lines

Product line

Characteristics

930 DN 15-100

From DN 15 to DN 100.

Centring via the outer diameter of the

body.

931 DN 15-100

From DN 15 to DN 100.

Centering via the outer diameter of the

body and via the centering ring if

necessary.

931 DN 125-200

From DN 125 to DN 200.

Centering via the outer diameter of the

body.

932 DN 15-100

From DN 15 to DN 100.

Precise adjusting via centering cams.

Centering cams are provided with a hole

for grounding cable.

Centering cam

3 VALVE DESCRIPTION

Revision status: 03/05/2022 7 Index number: D0-116

Product line

Characteristics

932 DN 125-300

From DN 125 to DN 300.

Centering via grooves or outer diameter of

housing.

932-HD DN 15-100

From DN 15 to DN 100.

High pressure version up to 160bar.

Centering over the outer diameter of the

body.

936

From DN 15 to DN 100.

Plastic version.

Centering over the outer diameter of the

body.

3.2 Intended use

Disco check valves are valves used to prevent backflow in piping systems. AWS check

valves are characterized by their simple design as well as their short face-to-face length

(according to DIN EN 558, series 49 and series 52). They provide an optimal solution where

wafer connections are required. In addition to the standard design, valves can also be

supplied with a wide range of special opening pressures (additional option S07), so that an

extremely wide range of applications can be covered. For further special options, please read

the sales documents.

The above-mentioned check valves are suitable for use in pipeline systems for the transport

of liquid and gaseous fluids, as well as in systems where particularly high requirements are

placed on the material. The valves are not suitable for solids.

3.3Description of function

Disco check valves are medium-controlled backflow preventers and open when the opening

force of the medium is greater than the closing force of the disc. In case of failure (e.g. pump

failure) or backflow of the medium, the valve closes automatically.

grooves

3 VALVE DESCRIPTION

Revision status: 03/05/2022 8 Index number: D0-116

3.4 Pressure test of the valve

The valve is leak-tested at the factory with air or water. Therefore the following warnings

must be observed:

CAUTION

Residues on the valve

Residues of the test medium may still be left on the

contact surfaces of the valve.

Be aware of possible reactions with the operating

medium.

During a system pressure test of the system, the following warning must be observed:

WARNING

Excess pressure of the valve

In a system pressure test of the system, the pressure

must not exceed 1.5 times the max. permissible

pressure PS of the valve.

3.5 Scope of delivery

The valve is supplied ready for installation.

For valves with the add-on option S79, an additional grounding cable is included in the scope

of delivery.

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