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Operating instruction
Product line
ZRK / ZRKF / 920 / 925.1
AWS Apparatebau Arnold GmbH
Zimmerbachstraße 51
74676 Niedernhall - Waldzimmern
FON
+49 (0)7940 9308-200
FAX
+49 (0)7940 9308-212
MAIL
info@aws-apparatebau.de
WEB
www.aws-apparatebau.de
Read carefully before use.
Keep for future use.
We reserve the right to make technical changes.
Swing check valve
EN
Englisch
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Summary of Contents for AWS ZRK
- Page 1 Operating instruction Swing check valve Product line ZRK / ZRKF / 920 / 925.1 AWS Apparatebau Arnold GmbH Zimmerbachstraße 51 74676 Niedernhall - Waldzimmern +49 (0)7940 9308-200 +49 (0)7940 9308-212 MAIL info@aws-apparatebau.de www.aws-apparatebau.de Read carefully before use. Keep for future use.
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Page 2: Table Of Contents
CONTENTS Swing check valve PREFACE ........................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 SAFETY INSTRUCTIONS ....................2 2.1 Warnings ............................2 2.2 Intended use ..........................2 2.3 Requirements of the user ...................... -
Page 3: Swing Check Valve
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. -
Page 4: Safety Instructions
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. -
Page 5: General Safety Instructions
2 SAFETY INSTRUCTIONS 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 ... - Page 6 2 SAFETY INSTRUCTIONS CAUTION Risk of minor injuries Wear protective gloves during installation, removal 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 ...
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Page 7: Valve Description
Components only available in the product lines ZRKF and 920-with spring return. Only available in soft-sealing version. The design of the specified product series (ZRK/ZRKF/920/925.1) differs only slightly from each other. The illustration lists all components of the valves. Revision status: 03/05/2022... -
Page 8: Product Lines
3 VALVE DESCRIPTION 3.1 Product lines Product line Characteristics From DN 32 to DN 1000. Without spring return. Centering via the outer diameter of the valve. ZRKF From DN 32 to DN 600. With spring return. ... -
Page 9: Intended Use
3 VALVE DESCRIPTION 3.2 Intended use Check valves are valves used for backflow prevention in piping systems. AWS check valves are characterized by their simple design as well as their short construction. They are designed for direct installation between connecting flanges. -
Page 10: Type Plate
A type plate is attached to each valve. The characteristics of the valve are listed on it. The following figure shows the structure of such a type plate. Structure of a type plate of the ZRK product line: ① ZRK-VA1-VA1-250-E ②... -
Page 11: Type Code
4 TYPE PLATE 4.2 Type code The type code of the valves is structured as follows: Material Nominal Type Design Body Disc Spring* Sealing size ST = 1.0619, zinc ST = 1.0619, zinc 32 – 1000 ST-ST F1 = 1.4571 plated plated M = Metal seated... -
Page 12: Storage And Transport
5 STORAGE AND TRANSPORT 5 STORAGE AND TRANSPORT The valve is delivered in a ready-to-use condition. When storing and transporting the valve, there are some guidelines that the user must follow to guarantee proper functioning of the valve. Storage: The valve must be stored in the original packaging in closed rooms. -
Page 13: Installation
6 INSTALLATION 6 INSTALLATION The operator of the system is generally responsible for the dimensioning of the piping and the installation of the valve. The function can be affected by planning and installation errors. 6.1 Prepare installation Before installation, the following steps must be followed: ... -
Page 14: Installation Instruction
6 INSTALLATION NOTICE Instructions for installing the valve The system must be clean and free of contaminants at the point of installation (flanges). Special attention must be paid to the sealing surfaces. It must be ensured that a calming distance of 5 x DN (see 6.2 Installation instruction;... - Page 15 6 INSTALLATION Tightening torques of the flange connection The tightening torques given below are to be understood as guide values, as they depend on various factors, such as the material and strength class of the screws or the used flange sealing (for metal-seated valves).
- Page 16 6 INSTALLATION Calming distance The illustration shows options how the valve should be installed in vertical and horizontal flow direction. It shows how the calming distance of 5 x DN must be realized in order to guarantee a proper function of the valve. Eyebolt horizontal ...
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Page 17: Commissioning, Decomissioning, Maintenance
If necessary, the system must be flushed out. 7.3 Maintenance AWS swing check valves are maintenance-free. However, they can be checked for function and safety to avoid unforeseen downtimes. The interval time is to be determined by the operator. -
Page 18: Correct Malfunctions And Defects
7 COMMISSIONING, DECOMMISSIONING, MAINTENANCE 7.5 Correct malfunctions and defects Malfunctions or defects may occur during operation. The following table shows possible causes and the appropriate solution. If malfunctions/defects are not listed, please contact the manufacturer. Malfunction/Defect Cause Solution Install the valve at a suitable Calming distance too low/not position in order to be able to respected... -
Page 19: Removal
8 REMOVAL / 9 STORE / REUSE THE VALVE 8 REMOVAL When removing the valve from the pipeline, all previously mentioned warnings and instructions apply. Pay special attention to chapter 6 Installation and chapter 7 Commissioning, decommissioning, maintenance. 8.1 Prepare removal Before removal, the following steps must be observed: ... -
Page 20: Disposal
Pay attention to any residual buildup and outgassing of the flow media. 11 DECLARATION OF CONFORMITY The valves are compliant with Directive 2014/68/EU (Pressure Equipment Directive). The declaration of conformity can be accessed and downloaded from the website www.aws- apparatebau.de. Revision status: 03/05/2022 Index number: D0-117...
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